./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bbd83af-46f7-4fad-bfec-1f391be5d695/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bbd83af-46f7-4fad-bfec-1f391be5d695/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bbd83af-46f7-4fad-bfec-1f391be5d695/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bbd83af-46f7-4fad-bfec-1f391be5d695/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bbd83af-46f7-4fad-bfec-1f391be5d695/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bbd83af-46f7-4fad-bfec-1f391be5d695/bin/uautomizer-verify-4GaUIPS5ZU --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 7fcfcf7d93c3fc85869efa536862a56a3ba120e3589f116e608720bbd1f279d7 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:11:40,781 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:11:40,938 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bbd83af-46f7-4fad-bfec-1f391be5d695/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 22:11:40,943 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:11:40,945 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:11:40,977 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:11:40,980 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:11:40,981 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:11:40,982 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:11:40,983 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:11:40,985 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:11:40,986 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:11:40,987 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:11:40,987 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:11:40,987 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:11:40,988 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:11:40,988 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:11:40,988 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:11:40,989 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:11:40,989 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:11:40,989 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:11:40,992 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:11:40,992 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:11:40,993 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:11:40,993 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:11:40,993 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:11:40,994 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:11:40,994 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:11:40,995 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:11:40,995 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:11:40,995 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:11:40,995 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:11:40,996 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:11:40,996 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:11:40,997 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:11:40,997 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:11:40,997 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:11:40,997 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:11:40,998 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:11:40,998 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:11:40,998 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:11:40,999 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:11:40,999 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bbd83af-46f7-4fad-bfec-1f391be5d695/bin/uautomizer-verify-4GaUIPS5ZU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bbd83af-46f7-4fad-bfec-1f391be5d695/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7fcfcf7d93c3fc85869efa536862a56a3ba120e3589f116e608720bbd1f279d7 [2024-10-31 22:11:41,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:11:41,379 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:11:41,382 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:11:41,383 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:11:41,384 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:11:41,385 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bbd83af-46f7-4fad-bfec-1f391be5d695/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c Unable to find full path for "g++" [2024-10-31 22:11:43,476 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:11:44,032 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:11:44,033 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bbd83af-46f7-4fad-bfec-1f391be5d695/sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c [2024-10-31 22:11:44,074 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bbd83af-46f7-4fad-bfec-1f391be5d695/bin/uautomizer-verify-4GaUIPS5ZU/data/258e0788c/82902a9c65a44fecac24281c802b5383/FLAG002d570f0 [2024-10-31 22:11:44,569 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bbd83af-46f7-4fad-bfec-1f391be5d695/bin/uautomizer-verify-4GaUIPS5ZU/data/258e0788c/82902a9c65a44fecac24281c802b5383 [2024-10-31 22:11:44,573 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:11:44,575 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:11:44,577 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:11:44,577 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:11:44,585 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:11:44,586 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:11:44" (1/1) ... [2024-10-31 22:11:44,588 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73242be8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:44, skipping insertion in model container [2024-10-31 22:11:44,588 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:11:44" (1/1) ... [2024-10-31 22:11:44,744 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:11:45,167 WARN L251 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_4bbd83af-46f7-4fad-bfec-1f391be5d695/sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c[6524,6537] [2024-10-31 22:11:45,237 WARN L251 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_4bbd83af-46f7-4fad-bfec-1f391be5d695/sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c[12079,12092] [2024-10-31 22:11:46,445 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:11:46,459 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:11:46,503 WARN L251 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_4bbd83af-46f7-4fad-bfec-1f391be5d695/sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c[6524,6537] [2024-10-31 22:11:46,527 WARN L251 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_4bbd83af-46f7-4fad-bfec-1f391be5d695/sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c[12079,12092] [2024-10-31 22:11:47,158 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:11:47,198 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:11:47,198 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:47 WrapperNode [2024-10-31 22:11:47,198 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:11:47,200 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:11:47,200 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:11:47,200 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:11:47,207 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:47" (1/1) ... [2024-10-31 22:11:47,267 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:47" (1/1) ... [2024-10-31 22:11:47,654 INFO L138 Inliner]: procedures = 35, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 4981 [2024-10-31 22:11:47,654 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:11:47,655 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:11:47,655 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:11:47,655 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:11:47,669 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:47" (1/1) ... [2024-10-31 22:11:47,669 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:47" (1/1) ... [2024-10-31 22:11:47,736 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:47" (1/1) ... [2024-10-31 22:11:48,005 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]. [2024-10-31 22:11:48,006 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:47" (1/1) ... [2024-10-31 22:11:48,006 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:47" (1/1) ... [2024-10-31 22:11:48,204 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:47" (1/1) ... [2024-10-31 22:11:48,247 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:47" (1/1) ... [2024-10-31 22:11:48,287 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:47" (1/1) ... [2024-10-31 22:11:48,334 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:47" (1/1) ... [2024-10-31 22:11:48,484 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:11:48,485 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:11:48,485 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:11:48,486 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:11:48,487 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:47" (1/1) ... [2024-10-31 22:11:48,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:11:48,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bbd83af-46f7-4fad-bfec-1f391be5d695/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:11:48,559 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bbd83af-46f7-4fad-bfec-1f391be5d695/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:11:48,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bbd83af-46f7-4fad-bfec-1f391be5d695/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:11:48,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:11:48,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:11:48,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:11:48,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:11:48,836 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:11:48,839 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:11:54,982 INFO L? ?]: Removed 734 outVars from TransFormulas that were not future-live. [2024-10-31 22:11:54,983 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:11:55,031 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:11:55,032 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-31 22:11:55,032 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:11:55 BoogieIcfgContainer [2024-10-31 22:11:55,032 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:11:55,035 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:11:55,035 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:11:55,038 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:11:55,039 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:11:44" (1/3) ... [2024-10-31 22:11:55,039 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e0849db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:11:55, skipping insertion in model container [2024-10-31 22:11:55,040 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:47" (2/3) ... [2024-10-31 22:11:55,042 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e0849db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:11:55, skipping insertion in model container [2024-10-31 22:11:55,042 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:11:55" (3/3) ... [2024-10-31 22:11:55,044 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c [2024-10-31 22:11:55,063 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:11:55,063 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-31 22:11:55,175 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:11:55,184 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;@7a79d921, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:11:55,184 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-31 22:11:55,197 INFO L276 IsEmpty]: Start isEmpty. Operand has 872 states, 869 states have (on average 1.906789413118527) internal successors, (1657), 871 states have internal predecessors, (1657), 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) [2024-10-31 22:11:55,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-10-31 22:11:55,207 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:11:55,208 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] [2024-10-31 22:11:55,209 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:11:55,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:55,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1537187155, now seen corresponding path program 1 times [2024-10-31 22:11:55,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:55,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375090177] [2024-10-31 22:11:55,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:55,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:55,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:55,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:11:55,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:55,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375090177] [2024-10-31 22:11:55,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375090177] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:55,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:55,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:11:55,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432710793] [2024-10-31 22:11:55,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:55,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-31 22:11:55,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:55,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-31 22:11:55,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-31 22:11:55,546 INFO L87 Difference]: Start difference. First operand has 872 states, 869 states have (on average 1.906789413118527) internal successors, (1657), 871 states have internal predecessors, (1657), 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 10.0) internal successors, (20), 2 states have internal predecessors, (20), 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) [2024-10-31 22:11:55,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:11:55,637 INFO L93 Difference]: Finished difference Result 1720 states and 3272 transitions. [2024-10-31 22:11:55,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-31 22:11:55,643 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 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 20 [2024-10-31 22:11:55,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:11:55,666 INFO L225 Difference]: With dead ends: 1720 [2024-10-31 22:11:55,667 INFO L226 Difference]: Without dead ends: 806 [2024-10-31 22:11:55,672 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 [2024-10-31 22:11:55,677 INFO L432 NwaCegarLoop]: 1588 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, 1588 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 [2024-10-31 22:11:55,680 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1588 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:11:55,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2024-10-31 22:11:55,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 806. [2024-10-31 22:11:55,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 804 states have (on average 1.8955223880597014) internal successors, (1524), 805 states have internal predecessors, (1524), 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) [2024-10-31 22:11:55,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1524 transitions. [2024-10-31 22:11:55,782 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1524 transitions. Word has length 20 [2024-10-31 22:11:55,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:11:55,782 INFO L471 AbstractCegarLoop]: Abstraction has 806 states and 1524 transitions. [2024-10-31 22:11:55,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 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) [2024-10-31 22:11:55,783 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1524 transitions. [2024-10-31 22:11:55,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-10-31 22:11:55,784 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:11:55,784 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] [2024-10-31 22:11:55,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:11:55,785 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:11:55,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:55,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1746662891, now seen corresponding path program 1 times [2024-10-31 22:11:55,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:55,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060163342] [2024-10-31 22:11:55,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:55,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:55,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:56,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:11:56,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:56,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060163342] [2024-10-31 22:11:56,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060163342] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:56,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:56,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:11:56,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396686829] [2024-10-31 22:11:56,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:56,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:11:56,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:56,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:11:56,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:11:56,179 INFO L87 Difference]: Start difference. First operand 806 states and 1524 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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) [2024-10-31 22:11:56,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:11:56,311 INFO L93 Difference]: Finished difference Result 840 states and 1575 transitions. [2024-10-31 22:11:56,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:11:56,314 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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 20 [2024-10-31 22:11:56,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:11:56,319 INFO L225 Difference]: With dead ends: 840 [2024-10-31 22:11:56,319 INFO L226 Difference]: Without dead ends: 806 [2024-10-31 22:11:56,320 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 [2024-10-31 22:11:56,322 INFO L432 NwaCegarLoop]: 1522 mSDtfsCounter, 0 mSDsluCounter, 4545 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6067 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:11:56,323 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6067 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:11:56,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2024-10-31 22:11:56,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 806. [2024-10-31 22:11:56,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 804 states have (on average 1.8756218905472637) internal successors, (1508), 805 states have internal predecessors, (1508), 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) [2024-10-31 22:11:56,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1508 transitions. [2024-10-31 22:11:56,371 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1508 transitions. Word has length 20 [2024-10-31 22:11:56,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:11:56,372 INFO L471 AbstractCegarLoop]: Abstraction has 806 states and 1508 transitions. [2024-10-31 22:11:56,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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) [2024-10-31 22:11:56,372 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1508 transitions. [2024-10-31 22:11:56,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-10-31 22:11:56,373 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:11:56,373 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] [2024-10-31 22:11:56,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:11:56,375 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:11:56,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:56,375 INFO L85 PathProgramCache]: Analyzing trace with hash 623816355, now seen corresponding path program 1 times [2024-10-31 22:11:56,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:56,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179504768] [2024-10-31 22:11:56,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:56,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:56,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:56,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:11:56,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:56,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179504768] [2024-10-31 22:11:56,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179504768] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:56,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:56,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:11:56,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15924941] [2024-10-31 22:11:56,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:56,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:11:56,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:56,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:11:56,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:11:56,571 INFO L87 Difference]: Start difference. First operand 806 states and 1508 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2024-10-31 22:11:56,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:11:56,746 INFO L93 Difference]: Finished difference Result 986 states and 1790 transitions. [2024-10-31 22:11:56,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:11:56,747 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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 35 [2024-10-31 22:11:56,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:11:56,751 INFO L225 Difference]: With dead ends: 986 [2024-10-31 22:11:56,752 INFO L226 Difference]: Without dead ends: 956 [2024-10-31 22:11:56,753 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:11:56,754 INFO L432 NwaCegarLoop]: 1504 mSDtfsCounter, 4589 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4589 SdHoareTripleChecker+Valid, 1865 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:11:56,754 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4589 Valid, 1865 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:11:56,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2024-10-31 22:11:56,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 834. [2024-10-31 22:11:56,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 832 states have (on average 1.8653846153846154) internal successors, (1552), 833 states have internal predecessors, (1552), 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) [2024-10-31 22:11:56,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1552 transitions. [2024-10-31 22:11:56,779 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1552 transitions. Word has length 35 [2024-10-31 22:11:56,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:11:56,780 INFO L471 AbstractCegarLoop]: Abstraction has 834 states and 1552 transitions. [2024-10-31 22:11:56,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2024-10-31 22:11:56,780 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1552 transitions. [2024-10-31 22:11:56,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-31 22:11:56,782 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:11:56,782 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] [2024-10-31 22:11:56,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:11:56,782 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:11:56,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:56,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1071361683, now seen corresponding path program 1 times [2024-10-31 22:11:56,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:56,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401154470] [2024-10-31 22:11:56,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:56,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:56,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:56,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:11:56,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:56,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401154470] [2024-10-31 22:11:56,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401154470] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:56,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:56,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:11:56,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422589747] [2024-10-31 22:11:56,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:56,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:11:56,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:56,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:11:56,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:11:56,916 INFO L87 Difference]: Start difference. First operand 834 states and 1552 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:11:56,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:11:56,962 INFO L93 Difference]: Finished difference Result 939 states and 1715 transitions. [2024-10-31 22:11:56,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:11:56,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-10-31 22:11:56,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:11:56,968 INFO L225 Difference]: With dead ends: 939 [2024-10-31 22:11:56,968 INFO L226 Difference]: Without dead ends: 881 [2024-10-31 22:11:56,969 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 [2024-10-31 22:11:56,974 INFO L432 NwaCegarLoop]: 1506 mSDtfsCounter, 1466 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 1548 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 [2024-10-31 22:11:56,974 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 1548 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:11:56,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2024-10-31 22:11:56,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 879. [2024-10-31 22:11:56,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 877 states have (on average 1.847206385404789) internal successors, (1620), 878 states have internal predecessors, (1620), 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) [2024-10-31 22:11:57,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1620 transitions. [2024-10-31 22:11:57,000 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1620 transitions. Word has length 37 [2024-10-31 22:11:57,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:11:57,001 INFO L471 AbstractCegarLoop]: Abstraction has 879 states and 1620 transitions. [2024-10-31 22:11:57,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:11:57,001 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1620 transitions. [2024-10-31 22:11:57,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-31 22:11:57,004 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:11:57,004 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] [2024-10-31 22:11:57,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:11:57,004 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:11:57,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:57,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1137855195, now seen corresponding path program 1 times [2024-10-31 22:11:57,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:57,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620881252] [2024-10-31 22:11:57,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:57,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:57,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:57,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:11:57,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:57,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620881252] [2024-10-31 22:11:57,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620881252] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:57,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:57,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:11:57,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426077347] [2024-10-31 22:11:57,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:57,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:11:57,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:57,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:11:57,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:11:57,260 INFO L87 Difference]: Start difference. First operand 879 states and 1620 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:11:57,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:11:57,361 INFO L93 Difference]: Finished difference Result 984 states and 1780 transitions. [2024-10-31 22:11:57,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:11:57,362 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-10-31 22:11:57,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:11:57,365 INFO L225 Difference]: With dead ends: 984 [2024-10-31 22:11:57,365 INFO L226 Difference]: Without dead ends: 881 [2024-10-31 22:11:57,368 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:11:57,368 INFO L432 NwaCegarLoop]: 1503 mSDtfsCounter, 2946 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2946 SdHoareTripleChecker+Valid, 1592 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:11:57,369 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2946 Valid, 1592 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:11:57,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2024-10-31 22:11:57,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 879. [2024-10-31 22:11:57,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 877 states have (on average 1.8449258836944127) internal successors, (1618), 878 states have internal predecessors, (1618), 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) [2024-10-31 22:11:57,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1618 transitions. [2024-10-31 22:11:57,391 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1618 transitions. Word has length 37 [2024-10-31 22:11:57,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:11:57,391 INFO L471 AbstractCegarLoop]: Abstraction has 879 states and 1618 transitions. [2024-10-31 22:11:57,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:11:57,392 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1618 transitions. [2024-10-31 22:11:57,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-31 22:11:57,393 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:11:57,393 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] [2024-10-31 22:11:57,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:11:57,393 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:11:57,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:57,394 INFO L85 PathProgramCache]: Analyzing trace with hash 499049456, now seen corresponding path program 1 times [2024-10-31 22:11:57,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:57,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705622940] [2024-10-31 22:11:57,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:57,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:57,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:57,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:11:57,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:57,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705622940] [2024-10-31 22:11:57,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705622940] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:57,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:57,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-31 22:11:57,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681652757] [2024-10-31 22:11:57,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:57,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-31 22:11:57,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:57,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-31 22:11:57,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:11:57,739 INFO L87 Difference]: Start difference. First operand 879 states and 1618 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 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) [2024-10-31 22:11:57,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:11:57,846 INFO L93 Difference]: Finished difference Result 887 states and 1627 transitions. [2024-10-31 22:11:57,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:11:57,849 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 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 38 [2024-10-31 22:11:57,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:11:57,854 INFO L225 Difference]: With dead ends: 887 [2024-10-31 22:11:57,855 INFO L226 Difference]: Without dead ends: 885 [2024-10-31 22:11:57,856 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:11:57,858 INFO L432 NwaCegarLoop]: 1502 mSDtfsCounter, 0 mSDsluCounter, 8999 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10501 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:11:57,858 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10501 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:11:57,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2024-10-31 22:11:57,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 885. [2024-10-31 22:11:57,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 883 states have (on average 1.838052095130238) internal successors, (1623), 884 states have internal predecessors, (1623), 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) [2024-10-31 22:11:57,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1623 transitions. [2024-10-31 22:11:57,887 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1623 transitions. Word has length 38 [2024-10-31 22:11:57,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:11:57,888 INFO L471 AbstractCegarLoop]: Abstraction has 885 states and 1623 transitions. [2024-10-31 22:11:57,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 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) [2024-10-31 22:11:57,888 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1623 transitions. [2024-10-31 22:11:57,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-31 22:11:57,890 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:11:57,890 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] [2024-10-31 22:11:57,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:11:57,891 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:11:57,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:57,891 INFO L85 PathProgramCache]: Analyzing trace with hash 166228827, now seen corresponding path program 1 times [2024-10-31 22:11:57,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:57,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071777278] [2024-10-31 22:11:57,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:57,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:57,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:57,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:11:57,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:57,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071777278] [2024-10-31 22:11:57,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071777278] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:57,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:57,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:11:57,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351480978] [2024-10-31 22:11:57,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:57,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:11:57,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:57,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:11:57,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:11:57,974 INFO L87 Difference]: Start difference. First operand 885 states and 1623 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2024-10-31 22:11:58,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:11:58,011 INFO L93 Difference]: Finished difference Result 1007 states and 1804 transitions. [2024-10-31 22:11:58,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:11:58,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 39 [2024-10-31 22:11:58,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:11:58,016 INFO L225 Difference]: With dead ends: 1007 [2024-10-31 22:11:58,016 INFO L226 Difference]: Without dead ends: 943 [2024-10-31 22:11:58,016 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 [2024-10-31 22:11:58,019 INFO L432 NwaCegarLoop]: 1540 mSDtfsCounter, 1476 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 1588 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 [2024-10-31 22:11:58,019 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 1588 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:11:58,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2024-10-31 22:11:58,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 941. [2024-10-31 22:11:58,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 941 states, 939 states have (on average 1.8146964856230032) internal successors, (1704), 940 states have internal predecessors, (1704), 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) [2024-10-31 22:11:58,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 1704 transitions. [2024-10-31 22:11:58,048 INFO L78 Accepts]: Start accepts. Automaton has 941 states and 1704 transitions. Word has length 39 [2024-10-31 22:11:58,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:11:58,048 INFO L471 AbstractCegarLoop]: Abstraction has 941 states and 1704 transitions. [2024-10-31 22:11:58,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2024-10-31 22:11:58,048 INFO L276 IsEmpty]: Start isEmpty. Operand 941 states and 1704 transitions. [2024-10-31 22:11:58,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-31 22:11:58,050 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:11:58,050 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] [2024-10-31 22:11:58,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:11:58,050 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:11:58,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:58,051 INFO L85 PathProgramCache]: Analyzing trace with hash -2049239973, now seen corresponding path program 1 times [2024-10-31 22:11:58,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:58,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629674714] [2024-10-31 22:11:58,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:58,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:58,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:58,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:11:58,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:58,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629674714] [2024-10-31 22:11:58,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629674714] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:58,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:58,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:11:58,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144160281] [2024-10-31 22:11:58,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:58,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:11:58,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:58,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:11:58,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:11:58,133 INFO L87 Difference]: Start difference. First operand 941 states and 1704 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2024-10-31 22:11:58,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:11:58,169 INFO L93 Difference]: Finished difference Result 1243 states and 2144 transitions. [2024-10-31 22:11:58,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:11:58,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 39 [2024-10-31 22:11:58,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:11:58,175 INFO L225 Difference]: With dead ends: 1243 [2024-10-31 22:11:58,175 INFO L226 Difference]: Without dead ends: 1080 [2024-10-31 22:11:58,176 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 [2024-10-31 22:11:58,177 INFO L432 NwaCegarLoop]: 1542 mSDtfsCounter, 1474 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1594 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 [2024-10-31 22:11:58,177 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1594 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:11:58,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1080 states. [2024-10-31 22:11:58,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1080 to 1078. [2024-10-31 22:11:58,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1078 states, 1076 states have (on average 1.762081784386617) internal successors, (1896), 1077 states have internal predecessors, (1896), 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) [2024-10-31 22:11:58,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 1896 transitions. [2024-10-31 22:11:58,206 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 1896 transitions. Word has length 39 [2024-10-31 22:11:58,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:11:58,206 INFO L471 AbstractCegarLoop]: Abstraction has 1078 states and 1896 transitions. [2024-10-31 22:11:58,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2024-10-31 22:11:58,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 1896 transitions. [2024-10-31 22:11:58,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-31 22:11:58,207 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:11:58,207 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] [2024-10-31 22:11:58,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 22:11:58,207 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:11:58,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:58,208 INFO L85 PathProgramCache]: Analyzing trace with hash -268307109, now seen corresponding path program 1 times [2024-10-31 22:11:58,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:58,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041456836] [2024-10-31 22:11:58,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:58,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:58,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:58,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:11:58,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:58,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041456836] [2024-10-31 22:11:58,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041456836] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:58,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:58,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:11:58,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859119320] [2024-10-31 22:11:58,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:58,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:11:58,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:58,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:11:58,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:11:58,269 INFO L87 Difference]: Start difference. First operand 1078 states and 1896 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2024-10-31 22:11:58,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:11:58,311 INFO L93 Difference]: Finished difference Result 1630 states and 2678 transitions. [2024-10-31 22:11:58,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:11:58,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 39 [2024-10-31 22:11:58,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:11:58,317 INFO L225 Difference]: With dead ends: 1630 [2024-10-31 22:11:58,317 INFO L226 Difference]: Without dead ends: 1330 [2024-10-31 22:11:58,318 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 [2024-10-31 22:11:58,319 INFO L432 NwaCegarLoop]: 1540 mSDtfsCounter, 1472 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1596 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 [2024-10-31 22:11:58,319 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1596 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:11:58,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2024-10-31 22:11:58,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1328. [2024-10-31 22:11:58,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1328 states, 1326 states have (on average 1.6832579185520362) internal successors, (2232), 1327 states have internal predecessors, (2232), 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) [2024-10-31 22:11:58,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1328 states to 1328 states and 2232 transitions. [2024-10-31 22:11:58,355 INFO L78 Accepts]: Start accepts. Automaton has 1328 states and 2232 transitions. Word has length 39 [2024-10-31 22:11:58,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:11:58,355 INFO L471 AbstractCegarLoop]: Abstraction has 1328 states and 2232 transitions. [2024-10-31 22:11:58,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2024-10-31 22:11:58,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1328 states and 2232 transitions. [2024-10-31 22:11:58,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-10-31 22:11:58,356 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:11:58,357 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] [2024-10-31 22:11:58,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-31 22:11:58,357 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:11:58,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:58,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1521212245, now seen corresponding path program 1 times [2024-10-31 22:11:58,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:58,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827786883] [2024-10-31 22:11:58,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:58,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:58,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:58,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:11:58,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:58,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827786883] [2024-10-31 22:11:58,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827786883] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:58,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:58,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:11:58,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555759276] [2024-10-31 22:11:58,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:58,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:11:58,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:58,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:11:58,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:11:58,427 INFO L87 Difference]: Start difference. First operand 1328 states and 2232 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 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) [2024-10-31 22:12:03,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:12:03,285 INFO L93 Difference]: Finished difference Result 2832 states and 5105 transitions. [2024-10-31 22:12:03,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:12:03,286 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 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 [2024-10-31 22:12:03,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:12:03,296 INFO L225 Difference]: With dead ends: 2832 [2024-10-31 22:12:03,296 INFO L226 Difference]: Without dead ends: 2079 [2024-10-31 22:12:03,298 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:12:03,299 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 836 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 998 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 3275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 998 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-10-31 22:12:03,299 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [836 Valid, 146 Invalid, 3275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [998 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2024-10-31 22:12:03,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2079 states. [2024-10-31 22:12:03,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2079 to 2079. [2024-10-31 22:12:03,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2079 states, 2077 states have (on average 1.7366393837265286) internal successors, (3607), 2078 states have internal predecessors, (3607), 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) [2024-10-31 22:12:03,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2079 states to 2079 states and 3607 transitions. [2024-10-31 22:12:03,371 INFO L78 Accepts]: Start accepts. Automaton has 2079 states and 3607 transitions. Word has length 48 [2024-10-31 22:12:03,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:12:03,371 INFO L471 AbstractCegarLoop]: Abstraction has 2079 states and 3607 transitions. [2024-10-31 22:12:03,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 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) [2024-10-31 22:12:03,372 INFO L276 IsEmpty]: Start isEmpty. Operand 2079 states and 3607 transitions. [2024-10-31 22:12:03,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-10-31 22:12:03,373 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:12:03,373 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] [2024-10-31 22:12:03,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-31 22:12:03,374 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:12:03,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:03,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1567417933, now seen corresponding path program 1 times [2024-10-31 22:12:03,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:03,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576968895] [2024-10-31 22:12:03,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:03,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:03,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:03,572 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 22:12:03,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:03,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576968895] [2024-10-31 22:12:03,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576968895] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:12:03,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:12:03,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:12:03,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854720203] [2024-10-31 22:12:03,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:12:03,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:12:03,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:03,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:12:03,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:12:03,577 INFO L87 Difference]: Start difference. First operand 2079 states and 3607 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 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) [2024-10-31 22:12:03,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:12:03,736 INFO L93 Difference]: Finished difference Result 3711 states and 5883 transitions. [2024-10-31 22:12:03,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:12:03,737 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 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 54 [2024-10-31 22:12:03,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:12:03,749 INFO L225 Difference]: With dead ends: 3711 [2024-10-31 22:12:03,749 INFO L226 Difference]: Without dead ends: 3309 [2024-10-31 22:12:03,751 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:12:03,752 INFO L432 NwaCegarLoop]: 1548 mSDtfsCounter, 3039 mSDsluCounter, 1612 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3039 SdHoareTripleChecker+Valid, 3160 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:12:03,753 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3039 Valid, 3160 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:12:03,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3309 states. [2024-10-31 22:12:03,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3309 to 2555. [2024-10-31 22:12:03,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2555 states, 2553 states have (on average 1.6698002350176264) internal successors, (4263), 2554 states have internal predecessors, (4263), 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) [2024-10-31 22:12:03,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2555 states to 2555 states and 4263 transitions. [2024-10-31 22:12:03,870 INFO L78 Accepts]: Start accepts. Automaton has 2555 states and 4263 transitions. Word has length 54 [2024-10-31 22:12:03,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:12:03,870 INFO L471 AbstractCegarLoop]: Abstraction has 2555 states and 4263 transitions. [2024-10-31 22:12:03,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 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) [2024-10-31 22:12:03,871 INFO L276 IsEmpty]: Start isEmpty. Operand 2555 states and 4263 transitions. [2024-10-31 22:12:03,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-10-31 22:12:03,872 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:12:03,872 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] [2024-10-31 22:12:03,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-31 22:12:03,872 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:12:03,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:03,873 INFO L85 PathProgramCache]: Analyzing trace with hash -648050867, now seen corresponding path program 1 times [2024-10-31 22:12:03,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:03,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511267119] [2024-10-31 22:12:03,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:03,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:03,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:03,996 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-31 22:12:03,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:03,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511267119] [2024-10-31 22:12:03,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511267119] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:12:03,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:12:03,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:12:03,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542626749] [2024-10-31 22:12:03,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:12:03,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:12:03,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:03,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:12:03,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:12:03,999 INFO L87 Difference]: Start difference. First operand 2555 states and 4263 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2024-10-31 22:12:04,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:12:04,153 INFO L93 Difference]: Finished difference Result 4259 states and 6643 transitions. [2024-10-31 22:12:04,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:12:04,153 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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 54 [2024-10-31 22:12:04,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:12:04,165 INFO L225 Difference]: With dead ends: 4259 [2024-10-31 22:12:04,165 INFO L226 Difference]: Without dead ends: 3709 [2024-10-31 22:12:04,168 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:12:04,168 INFO L432 NwaCegarLoop]: 1547 mSDtfsCounter, 3039 mSDsluCounter, 1610 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3039 SdHoareTripleChecker+Valid, 3157 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:12:04,169 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3039 Valid, 3157 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:12:04,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3709 states. [2024-10-31 22:12:04,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3709 to 3303. [2024-10-31 22:12:04,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3303 states, 3301 states have (on average 1.6028476219327477) internal successors, (5291), 3302 states have internal predecessors, (5291), 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) [2024-10-31 22:12:04,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3303 states to 3303 states and 5291 transitions. [2024-10-31 22:12:04,268 INFO L78 Accepts]: Start accepts. Automaton has 3303 states and 5291 transitions. Word has length 54 [2024-10-31 22:12:04,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:12:04,269 INFO L471 AbstractCegarLoop]: Abstraction has 3303 states and 5291 transitions. [2024-10-31 22:12:04,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2024-10-31 22:12:04,269 INFO L276 IsEmpty]: Start isEmpty. Operand 3303 states and 5291 transitions. [2024-10-31 22:12:04,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-10-31 22:12:04,270 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:12:04,270 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] [2024-10-31 22:12:04,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-31 22:12:04,271 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:12:04,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:04,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1132881997, now seen corresponding path program 1 times [2024-10-31 22:12:04,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:04,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73832228] [2024-10-31 22:12:04,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:04,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:04,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:04,452 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-31 22:12:04,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:04,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73832228] [2024-10-31 22:12:04,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73832228] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:12:04,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:12:04,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:12:04,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840801487] [2024-10-31 22:12:04,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:12:04,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:12:04,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:04,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:12:04,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:12:04,455 INFO L87 Difference]: Start difference. First operand 3303 states and 5291 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2024-10-31 22:12:04,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:12:04,625 INFO L93 Difference]: Finished difference Result 4807 states and 7399 transitions. [2024-10-31 22:12:04,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:12:04,627 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 54 [2024-10-31 22:12:04,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:12:04,640 INFO L225 Difference]: With dead ends: 4807 [2024-10-31 22:12:04,640 INFO L226 Difference]: Without dead ends: 4257 [2024-10-31 22:12:04,642 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:12:04,643 INFO L432 NwaCegarLoop]: 1546 mSDtfsCounter, 3045 mSDsluCounter, 1612 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3045 SdHoareTripleChecker+Valid, 3158 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:12:04,644 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3045 Valid, 3158 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:12:04,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4257 states. [2024-10-31 22:12:04,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4257 to 3851. [2024-10-31 22:12:04,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3851 states, 3849 states have (on average 1.5710574175110419) internal successors, (6047), 3850 states have internal predecessors, (6047), 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) [2024-10-31 22:12:04,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3851 states to 3851 states and 6047 transitions. [2024-10-31 22:12:04,758 INFO L78 Accepts]: Start accepts. Automaton has 3851 states and 6047 transitions. Word has length 54 [2024-10-31 22:12:04,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:12:04,758 INFO L471 AbstractCegarLoop]: Abstraction has 3851 states and 6047 transitions. [2024-10-31 22:12:04,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2024-10-31 22:12:04,759 INFO L276 IsEmpty]: Start isEmpty. Operand 3851 states and 6047 transitions. [2024-10-31 22:12:04,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-31 22:12:04,760 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:12:04,760 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] [2024-10-31 22:12:04,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-31 22:12:04,760 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:12:04,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:04,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1336470191, now seen corresponding path program 1 times [2024-10-31 22:12:04,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:04,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528216209] [2024-10-31 22:12:04,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:04,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:04,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:04,880 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:04,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:04,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528216209] [2024-10-31 22:12:04,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528216209] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:12:04,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:12:04,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:12:04,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321616484] [2024-10-31 22:12:04,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:12:04,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:12:04,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:04,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:12:04,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:12:04,883 INFO L87 Difference]: Start difference. First operand 3851 states and 6047 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2024-10-31 22:12:04,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:12:04,967 INFO L93 Difference]: Finished difference Result 6175 states and 9257 transitions. [2024-10-31 22:12:04,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:12:04,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 55 [2024-10-31 22:12:04,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:12:04,990 INFO L225 Difference]: With dead ends: 6175 [2024-10-31 22:12:04,994 INFO L226 Difference]: Without dead ends: 3853 [2024-10-31 22:12:04,997 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 [2024-10-31 22:12:04,999 INFO L432 NwaCegarLoop]: 1526 mSDtfsCounter, 29 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3022 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 [2024-10-31 22:12:04,999 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3022 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:12:05,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3853 states. [2024-10-31 22:12:05,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3853 to 3851. [2024-10-31 22:12:05,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3851 states, 3849 states have (on average 1.558067030397506) internal successors, (5997), 3850 states have internal predecessors, (5997), 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) [2024-10-31 22:12:05,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3851 states to 3851 states and 5997 transitions. [2024-10-31 22:12:05,110 INFO L78 Accepts]: Start accepts. Automaton has 3851 states and 5997 transitions. Word has length 55 [2024-10-31 22:12:05,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:12:05,111 INFO L471 AbstractCegarLoop]: Abstraction has 3851 states and 5997 transitions. [2024-10-31 22:12:05,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2024-10-31 22:12:05,111 INFO L276 IsEmpty]: Start isEmpty. Operand 3851 states and 5997 transitions. [2024-10-31 22:12:05,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-31 22:12:05,112 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:12:05,112 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] [2024-10-31 22:12:05,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-31 22:12:05,113 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:12:05,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:05,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1355833083, now seen corresponding path program 1 times [2024-10-31 22:12:05,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:05,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804150795] [2024-10-31 22:12:05,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:05,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:05,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:05,241 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:05,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:05,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804150795] [2024-10-31 22:12:05,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804150795] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:12:05,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:12:05,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:12:05,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055697418] [2024-10-31 22:12:05,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:12:05,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:12:05,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:05,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:12:05,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:12:05,244 INFO L87 Difference]: Start difference. First operand 3851 states and 5997 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2024-10-31 22:12:05,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:12:05,307 INFO L93 Difference]: Finished difference Result 4770 states and 7257 transitions. [2024-10-31 22:12:05,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:12:05,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 56 [2024-10-31 22:12:05,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:12:05,322 INFO L225 Difference]: With dead ends: 4770 [2024-10-31 22:12:05,322 INFO L226 Difference]: Without dead ends: 2448 [2024-10-31 22:12:05,325 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 [2024-10-31 22:12:05,326 INFO L432 NwaCegarLoop]: 1524 mSDtfsCounter, 23 mSDsluCounter, 1495 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3019 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 [2024-10-31 22:12:05,326 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 3019 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:12:05,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2448 states. [2024-10-31 22:12:05,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2448 to 2440. [2024-10-31 22:12:05,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2440 states, 2438 states have (on average 1.6702214930270713) internal successors, (4072), 2439 states have internal predecessors, (4072), 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) [2024-10-31 22:12:05,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2440 states to 2440 states and 4072 transitions. [2024-10-31 22:12:05,389 INFO L78 Accepts]: Start accepts. Automaton has 2440 states and 4072 transitions. Word has length 56 [2024-10-31 22:12:05,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:12:05,390 INFO L471 AbstractCegarLoop]: Abstraction has 2440 states and 4072 transitions. [2024-10-31 22:12:05,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2024-10-31 22:12:05,390 INFO L276 IsEmpty]: Start isEmpty. Operand 2440 states and 4072 transitions. [2024-10-31 22:12:05,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-10-31 22:12:05,391 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:12:05,391 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] [2024-10-31 22:12:05,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-31 22:12:05,391 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:12:05,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:05,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1597882527, now seen corresponding path program 1 times [2024-10-31 22:12:05,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:05,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862448672] [2024-10-31 22:12:05,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:05,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:05,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:05,538 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:05,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:05,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862448672] [2024-10-31 22:12:05,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862448672] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:12:05,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:12:05,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:12:05,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705445586] [2024-10-31 22:12:05,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:12:05,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:12:05,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:05,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:12:05,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:12:05,542 INFO L87 Difference]: Start difference. First operand 2440 states and 4072 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2024-10-31 22:12:05,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:12:05,590 INFO L93 Difference]: Finished difference Result 2894 states and 4686 transitions. [2024-10-31 22:12:05,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:12:05,591 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 57 [2024-10-31 22:12:05,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:12:05,600 INFO L225 Difference]: With dead ends: 2894 [2024-10-31 22:12:05,600 INFO L226 Difference]: Without dead ends: 1992 [2024-10-31 22:12:05,602 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 [2024-10-31 22:12:05,602 INFO L432 NwaCegarLoop]: 1518 mSDtfsCounter, 25 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 2998 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 [2024-10-31 22:12:05,602 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 2998 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:12:05,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1992 states. [2024-10-31 22:12:05,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1992 to 1990. [2024-10-31 22:12:05,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1990 states, 1988 states have (on average 1.7359154929577465) internal successors, (3451), 1989 states have internal predecessors, (3451), 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) [2024-10-31 22:12:05,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1990 states to 1990 states and 3451 transitions. [2024-10-31 22:12:05,658 INFO L78 Accepts]: Start accepts. Automaton has 1990 states and 3451 transitions. Word has length 57 [2024-10-31 22:12:05,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:12:05,659 INFO L471 AbstractCegarLoop]: Abstraction has 1990 states and 3451 transitions. [2024-10-31 22:12:05,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2024-10-31 22:12:05,659 INFO L276 IsEmpty]: Start isEmpty. Operand 1990 states and 3451 transitions. [2024-10-31 22:12:05,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-31 22:12:05,660 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:12:05,660 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] [2024-10-31 22:12:05,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-31 22:12:05,660 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:12:05,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:05,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1649038701, now seen corresponding path program 1 times [2024-10-31 22:12:05,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:05,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858572875] [2024-10-31 22:12:05,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:05,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:05,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:07,678 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:07,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:07,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858572875] [2024-10-31 22:12:07,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858572875] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:12:07,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796356614] [2024-10-31 22:12:07,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:07,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:12:07,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bbd83af-46f7-4fad-bfec-1f391be5d695/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:12:07,682 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bbd83af-46f7-4fad-bfec-1f391be5d695/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:12:07,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bbd83af-46f7-4fad-bfec-1f391be5d695/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:12:07,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:07,840 INFO L255 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-31 22:12:07,861 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:12:08,172 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 22:12:08,172 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:12:08,425 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 22:12:08,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796356614] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:12:08,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:12:08,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 4] total 19 [2024-10-31 22:12:08,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632758250] [2024-10-31 22:12:08,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:12:08,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-31 22:12:08,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:08,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-31 22:12:08,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2024-10-31 22:12:08,429 INFO L87 Difference]: Start difference. First operand 1990 states and 3451 transitions. Second operand has 19 states, 19 states have (on average 8.421052631578947) internal successors, (160), 19 states have internal predecessors, (160), 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)