./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.6.ufo.BOUNDED-12.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.6.ufo.BOUNDED-12.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 65159196aa732cf84d788dcb31500c216d665703806e14a7c6f7047ab62d591b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 08:51:08,841 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 08:51:08,898 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 08:51:08,902 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 08:51:08,903 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 08:51:08,925 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 08:51:08,925 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 08:51:08,926 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 08:51:08,926 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 08:51:08,926 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 08:51:08,926 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 08:51:08,926 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 08:51:08,927 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 08:51:08,927 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 08:51:08,927 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 08:51:08,927 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 08:51:08,927 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 08:51:08,927 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 08:51:08,927 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 08:51:08,927 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 08:51:08,927 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 08:51:08,927 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 08:51:08,928 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 08:51:08,928 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 08:51:08,928 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 08:51:08,928 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 08:51:08,928 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 08:51:08,928 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 08:51:08,928 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 08:51:08,928 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:51:08,928 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:51:08,928 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:51:08,928 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:51:08,929 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 08:51:08,929 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:51:08,929 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:51:08,929 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:51:08,929 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:51:08,929 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 08:51:08,929 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 08:51:08,929 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 08:51:08,929 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 08:51:08,929 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 08:51:08,929 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 08:51:08,930 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 08:51:08,930 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 08:51:08,930 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 08:51:08,930 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 08:51:08,930 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 65159196aa732cf84d788dcb31500c216d665703806e14a7c6f7047ab62d591b [2024-12-02 08:51:09,166 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 08:51:09,174 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 08:51:09,176 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 08:51:09,178 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 08:51:09,178 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 08:51:09,179 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/seq-mthreaded/pals_lcr.6.ufo.BOUNDED-12.pals.c [2024-12-02 08:51:11,862 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/data/593057c82/117460e825eb40adbb3ed3c15b5f1a72/FLAGfdb1f619e [2024-12-02 08:51:12,050 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 08:51:12,051 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/sv-benchmarks/c/seq-mthreaded/pals_lcr.6.ufo.BOUNDED-12.pals.c [2024-12-02 08:51:12,061 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/data/593057c82/117460e825eb40adbb3ed3c15b5f1a72/FLAGfdb1f619e [2024-12-02 08:51:12,076 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/data/593057c82/117460e825eb40adbb3ed3c15b5f1a72 [2024-12-02 08:51:12,078 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 08:51:12,079 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 08:51:12,081 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 08:51:12,081 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 08:51:12,085 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 08:51:12,086 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:51:12" (1/1) ... [2024-12-02 08:51:12,086 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ac76a84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:51:12, skipping insertion in model container [2024-12-02 08:51:12,087 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:51:12" (1/1) ... [2024-12-02 08:51:12,107 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 08:51:12,297 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/sv-benchmarks/c/seq-mthreaded/pals_lcr.6.ufo.BOUNDED-12.pals.c[15075,15088] [2024-12-02 08:51:12,300 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:51:12,310 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 08:51:12,355 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/sv-benchmarks/c/seq-mthreaded/pals_lcr.6.ufo.BOUNDED-12.pals.c[15075,15088] [2024-12-02 08:51:12,355 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:51:12,371 INFO L204 MainTranslator]: Completed translation [2024-12-02 08:51:12,372 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:51:12 WrapperNode [2024-12-02 08:51:12,372 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 08:51:12,373 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 08:51:12,373 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 08:51:12,373 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 08:51:12,379 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:51:12" (1/1) ... [2024-12-02 08:51:12,388 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:51:12" (1/1) ... [2024-12-02 08:51:12,413 INFO L138 Inliner]: procedures = 25, calls = 17, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 397 [2024-12-02 08:51:12,413 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 08:51:12,414 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 08:51:12,414 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 08:51:12,414 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 08:51:12,421 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:51:12" (1/1) ... [2024-12-02 08:51:12,421 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:51:12" (1/1) ... [2024-12-02 08:51:12,424 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:51:12" (1/1) ... [2024-12-02 08:51:12,439 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-12-02 08:51:12,439 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:51:12" (1/1) ... [2024-12-02 08:51:12,439 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:51:12" (1/1) ... [2024-12-02 08:51:12,446 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:51:12" (1/1) ... [2024-12-02 08:51:12,447 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:51:12" (1/1) ... [2024-12-02 08:51:12,453 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:51:12" (1/1) ... [2024-12-02 08:51:12,454 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:51:12" (1/1) ... [2024-12-02 08:51:12,456 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:51:12" (1/1) ... [2024-12-02 08:51:12,459 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 08:51:12,459 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 08:51:12,459 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 08:51:12,460 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 08:51:12,460 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:51:12" (1/1) ... [2024-12-02 08:51:12,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:51:12,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:51:12,485 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 08:51:12,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 08:51:12,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 08:51:12,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 08:51:12,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 08:51:12,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 08:51:12,582 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 08:51:12,583 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 08:51:12,981 INFO L? ?]: Removed 45 outVars from TransFormulas that were not future-live. [2024-12-02 08:51:12,981 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 08:51:12,992 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 08:51:12,992 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-12-02 08:51:12,992 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:51:12 BoogieIcfgContainer [2024-12-02 08:51:12,993 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 08:51:12,994 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 08:51:12,994 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 08:51:12,998 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 08:51:12,998 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:51:12" (1/3) ... [2024-12-02 08:51:12,998 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8cf17e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:51:12, skipping insertion in model container [2024-12-02 08:51:12,998 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:51:12" (2/3) ... [2024-12-02 08:51:12,999 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8cf17e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:51:12, skipping insertion in model container [2024-12-02 08:51:12,999 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:51:12" (3/3) ... [2024-12-02 08:51:13,000 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.BOUNDED-12.pals.c [2024-12-02 08:51:13,011 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 08:51:13,013 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.6.ufo.BOUNDED-12.pals.c that has 1 procedures, 99 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 08:51:13,057 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 08:51:13,066 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;@3b33ca1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 08:51:13,066 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 08:51:13,070 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 97 states have (on average 1.7628865979381443) internal successors, (171), 98 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:13,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-12-02 08:51:13,076 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:51:13,077 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:51:13,077 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:51:13,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:51:13,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1377296616, now seen corresponding path program 1 times [2024-12-02 08:51:13,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:51:13,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889553670] [2024-12-02 08:51:13,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:51:13,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:51:13,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:51:13,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:51:13,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:51:13,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889553670] [2024-12-02 08:51:13,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889553670] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:51:13,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:51:13,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 08:51:13,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720992661] [2024-12-02 08:51:13,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:51:13,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 08:51:13,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:51:13,326 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 08:51:13,326 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 08:51:13,328 INFO L87 Difference]: Start difference. First operand has 99 states, 97 states have (on average 1.7628865979381443) internal successors, (171), 98 states have internal predecessors, (171), 0 states have call successors, (0), 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 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:13,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:51:13,343 INFO L93 Difference]: Finished difference Result 153 states and 256 transitions. [2024-12-02 08:51:13,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 08:51:13,344 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2024-12-02 08:51:13,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:51:13,350 INFO L225 Difference]: With dead ends: 153 [2024-12-02 08:51:13,350 INFO L226 Difference]: Without dead ends: 95 [2024-12-02 08:51:13,353 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 08:51:13,355 INFO L435 NwaCegarLoop]: 168 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, 168 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:51:13,355 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:51:13,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-12-02 08:51:13,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2024-12-02 08:51:13,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.7446808510638299) internal successors, (164), 94 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:13,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 164 transitions. [2024-12-02 08:51:13,379 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 164 transitions. Word has length 26 [2024-12-02 08:51:13,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:51:13,379 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 164 transitions. [2024-12-02 08:51:13,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:13,380 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 164 transitions. [2024-12-02 08:51:13,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-12-02 08:51:13,381 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:51:13,381 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:51:13,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 08:51:13,382 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:51:13,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:51:13,382 INFO L85 PathProgramCache]: Analyzing trace with hash -954594790, now seen corresponding path program 1 times [2024-12-02 08:51:13,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:51:13,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914018164] [2024-12-02 08:51:13,382 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:51:13,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:51:13,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:51:13,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:51:13,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:51:13,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914018164] [2024-12-02 08:51:13,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914018164] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:51:13,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:51:13,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:51:13,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932365326] [2024-12-02 08:51:13,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:51:13,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:51:13,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:51:13,586 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:51:13,586 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:51:13,586 INFO L87 Difference]: Start difference. First operand 95 states and 164 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:13,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:51:13,684 INFO L93 Difference]: Finished difference Result 148 states and 246 transitions. [2024-12-02 08:51:13,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:51:13,684 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2024-12-02 08:51:13,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:51:13,685 INFO L225 Difference]: With dead ends: 148 [2024-12-02 08:51:13,685 INFO L226 Difference]: Without dead ends: 95 [2024-12-02 08:51:13,686 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:51:13,687 INFO L435 NwaCegarLoop]: 162 mSDtfsCounter, 0 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:51:13,687 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 603 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 08:51:13,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-12-02 08:51:13,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2024-12-02 08:51:13,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.3191489361702127) internal successors, (124), 94 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:13,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 124 transitions. [2024-12-02 08:51:13,694 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 124 transitions. Word has length 26 [2024-12-02 08:51:13,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:51:13,694 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 124 transitions. [2024-12-02 08:51:13,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:13,694 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 124 transitions. [2024-12-02 08:51:13,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-12-02 08:51:13,696 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:51:13,696 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:51:13,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 08:51:13,696 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:51:13,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:51:13,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1966565623, now seen corresponding path program 1 times [2024-12-02 08:51:13,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:51:13,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619861702] [2024-12-02 08:51:13,697 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:51:13,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:51:13,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:51:13,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:51:13,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:51:13,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619861702] [2024-12-02 08:51:13,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619861702] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:51:13,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:51:13,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 08:51:13,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971370210] [2024-12-02 08:51:13,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:51:13,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 08:51:13,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:51:13,928 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 08:51:13,928 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 08:51:13,929 INFO L87 Difference]: Start difference. First operand 95 states and 124 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:14,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:51:14,292 INFO L93 Difference]: Finished difference Result 683 states and 1060 transitions. [2024-12-02 08:51:14,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 08:51:14,292 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-12-02 08:51:14,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:51:14,296 INFO L225 Difference]: With dead ends: 683 [2024-12-02 08:51:14,297 INFO L226 Difference]: Without dead ends: 634 [2024-12-02 08:51:14,297 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2024-12-02 08:51:14,298 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 1076 mSDsluCounter, 2165 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1076 SdHoareTripleChecker+Valid, 2285 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 08:51:14,299 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1076 Valid, 2285 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 08:51:14,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2024-12-02 08:51:14,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 142. [2024-12-02 08:51:14,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 1.4113475177304964) internal successors, (199), 141 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:14,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 199 transitions. [2024-12-02 08:51:14,320 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 199 transitions. Word has length 65 [2024-12-02 08:51:14,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:51:14,320 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 199 transitions. [2024-12-02 08:51:14,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:14,321 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 199 transitions. [2024-12-02 08:51:14,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-12-02 08:51:14,322 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:51:14,323 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:51:14,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 08:51:14,323 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:51:14,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:51:14,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1499647751, now seen corresponding path program 1 times [2024-12-02 08:51:14,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:51:14,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795151182] [2024-12-02 08:51:14,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:51:14,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:51:14,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:51:14,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:51:14,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:51:14,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795151182] [2024-12-02 08:51:14,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795151182] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:51:14,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:51:14,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:51:14,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154962837] [2024-12-02 08:51:14,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:51:14,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:51:14,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:51:14,419 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:51:14,419 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:51:14,419 INFO L87 Difference]: Start difference. First operand 142 states and 199 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:14,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:51:14,439 INFO L93 Difference]: Finished difference Result 323 states and 486 transitions. [2024-12-02 08:51:14,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:51:14,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-12-02 08:51:14,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:51:14,441 INFO L225 Difference]: With dead ends: 323 [2024-12-02 08:51:14,441 INFO L226 Difference]: Without dead ends: 227 [2024-12-02 08:51:14,441 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:51:14,442 INFO L435 NwaCegarLoop]: 122 mSDtfsCounter, 51 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 195 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 [2024-12-02 08:51:14,442 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 195 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:51:14,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-12-02 08:51:14,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 225. [2024-12-02 08:51:14,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 224 states have (on average 1.46875) internal successors, (329), 224 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:14,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 329 transitions. [2024-12-02 08:51:14,456 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 329 transitions. Word has length 67 [2024-12-02 08:51:14,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:51:14,456 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 329 transitions. [2024-12-02 08:51:14,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:14,456 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 329 transitions. [2024-12-02 08:51:14,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-12-02 08:51:14,458 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:51:14,458 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:51:14,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 08:51:14,458 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:51:14,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:51:14,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1433154239, now seen corresponding path program 1 times [2024-12-02 08:51:14,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:51:14,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552270788] [2024-12-02 08:51:14,459 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:51:14,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:51:14,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:51:14,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:51:14,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:51:14,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552270788] [2024-12-02 08:51:14,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552270788] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:51:14,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:51:14,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 08:51:14,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233690568] [2024-12-02 08:51:14,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:51:14,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 08:51:14,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:51:14,842 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 08:51:14,842 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-12-02 08:51:14,842 INFO L87 Difference]: Start difference. First operand 225 states and 329 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:15,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:51:15,145 INFO L93 Difference]: Finished difference Result 406 states and 613 transitions. [2024-12-02 08:51:15,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 08:51:15,145 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-12-02 08:51:15,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:51:15,147 INFO L225 Difference]: With dead ends: 406 [2024-12-02 08:51:15,147 INFO L226 Difference]: Without dead ends: 227 [2024-12-02 08:51:15,147 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2024-12-02 08:51:15,148 INFO L435 NwaCegarLoop]: 116 mSDtfsCounter, 93 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:51:15,149 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 569 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 08:51:15,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-12-02 08:51:15,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 225. [2024-12-02 08:51:15,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 224 states have (on average 1.4598214285714286) internal successors, (327), 224 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:15,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 327 transitions. [2024-12-02 08:51:15,162 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 327 transitions. Word has length 67 [2024-12-02 08:51:15,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:51:15,162 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 327 transitions. [2024-12-02 08:51:15,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:15,162 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 327 transitions. [2024-12-02 08:51:15,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-12-02 08:51:15,164 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:51:15,164 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:51:15,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 08:51:15,164 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:51:15,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:51:15,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1892831450, now seen corresponding path program 1 times [2024-12-02 08:51:15,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:51:15,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380355393] [2024-12-02 08:51:15,165 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:51:15,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:51:15,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:51:15,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:51:15,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:51:15,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380355393] [2024-12-02 08:51:15,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380355393] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:51:15,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:51:15,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:51:15,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470289669] [2024-12-02 08:51:15,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:51:15,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:51:15,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:51:15,478 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:51:15,478 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:51:15,478 INFO L87 Difference]: Start difference. First operand 225 states and 327 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:15,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:51:15,506 INFO L93 Difference]: Finished difference Result 233 states and 336 transitions. [2024-12-02 08:51:15,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:51:15,507 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-12-02 08:51:15,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:51:15,508 INFO L225 Difference]: With dead ends: 233 [2024-12-02 08:51:15,508 INFO L226 Difference]: Without dead ends: 231 [2024-12-02 08:51:15,509 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:51:15,509 INFO L435 NwaCegarLoop]: 121 mSDtfsCounter, 0 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:51:15,510 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 475 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:51:15,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2024-12-02 08:51:15,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2024-12-02 08:51:15,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.4434782608695653) internal successors, (332), 230 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:15,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 332 transitions. [2024-12-02 08:51:15,521 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 332 transitions. Word has length 68 [2024-12-02 08:51:15,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:51:15,521 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 332 transitions. [2024-12-02 08:51:15,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:15,522 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 332 transitions. [2024-12-02 08:51:15,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-12-02 08:51:15,523 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:51:15,523 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:51:15,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 08:51:15,523 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:51:15,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:51:15,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1662299329, now seen corresponding path program 1 times [2024-12-02 08:51:15,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:51:15,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288517303] [2024-12-02 08:51:15,524 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:51:15,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:51:15,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:51:15,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:51:15,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:51:15,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288517303] [2024-12-02 08:51:15,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288517303] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:51:15,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:51:15,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:51:15,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437149150] [2024-12-02 08:51:15,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:51:15,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:51:15,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:51:15,620 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:51:15,620 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:51:15,620 INFO L87 Difference]: Start difference. First operand 231 states and 332 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:15,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:51:15,644 INFO L93 Difference]: Finished difference Result 430 states and 638 transitions. [2024-12-02 08:51:15,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:51:15,645 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2024-12-02 08:51:15,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:51:15,646 INFO L225 Difference]: With dead ends: 430 [2024-12-02 08:51:15,646 INFO L226 Difference]: Without dead ends: 328 [2024-12-02 08:51:15,647 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:51:15,647 INFO L435 NwaCegarLoop]: 186 mSDtfsCounter, 67 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 265 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 [2024-12-02 08:51:15,648 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 265 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:51:15,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2024-12-02 08:51:15,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 326. [2024-12-02 08:51:15,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 325 states have (on average 1.4646153846153847) internal successors, (476), 325 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:15,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 476 transitions. [2024-12-02 08:51:15,664 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 476 transitions. Word has length 69 [2024-12-02 08:51:15,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:51:15,665 INFO L471 AbstractCegarLoop]: Abstraction has 326 states and 476 transitions. [2024-12-02 08:51:15,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:15,665 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 476 transitions. [2024-12-02 08:51:15,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-12-02 08:51:15,666 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:51:15,666 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:51:15,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 08:51:15,666 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:51:15,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:51:15,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1825213889, now seen corresponding path program 1 times [2024-12-02 08:51:15,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:51:15,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117355050] [2024-12-02 08:51:15,667 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:51:15,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:51:15,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:51:15,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:51:15,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:51:15,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117355050] [2024-12-02 08:51:15,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117355050] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:51:15,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:51:15,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:51:15,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855474379] [2024-12-02 08:51:15,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:51:15,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:51:15,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:51:15,760 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:51:15,760 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:51:15,760 INFO L87 Difference]: Start difference. First operand 326 states and 476 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:15,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:51:15,787 INFO L93 Difference]: Finished difference Result 856 states and 1288 transitions. [2024-12-02 08:51:15,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:51:15,788 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2024-12-02 08:51:15,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:51:15,790 INFO L225 Difference]: With dead ends: 856 [2024-12-02 08:51:15,790 INFO L226 Difference]: Without dead ends: 579 [2024-12-02 08:51:15,790 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:51:15,791 INFO L435 NwaCegarLoop]: 188 mSDtfsCounter, 65 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 271 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 [2024-12-02 08:51:15,791 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 271 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:51:15,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2024-12-02 08:51:15,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 577. [2024-12-02 08:51:15,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 576 states have (on average 1.4826388888888888) internal successors, (854), 576 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:15,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 854 transitions. [2024-12-02 08:51:15,814 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 854 transitions. Word has length 69 [2024-12-02 08:51:15,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:51:15,814 INFO L471 AbstractCegarLoop]: Abstraction has 577 states and 854 transitions. [2024-12-02 08:51:15,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:15,814 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 854 transitions. [2024-12-02 08:51:15,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-12-02 08:51:15,815 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:51:15,815 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:51:15,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 08:51:15,815 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:51:15,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:51:15,816 INFO L85 PathProgramCache]: Analyzing trace with hash -967635007, now seen corresponding path program 1 times [2024-12-02 08:51:15,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:51:15,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866677555] [2024-12-02 08:51:15,816 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:51:15,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:51:15,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:51:15,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:51:15,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:51:15,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866677555] [2024-12-02 08:51:15,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866677555] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:51:15,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:51:15,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:51:15,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381054646] [2024-12-02 08:51:15,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:51:15,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:51:15,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:51:15,882 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:51:15,882 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:51:15,882 INFO L87 Difference]: Start difference. First operand 577 states and 854 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:15,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:51:15,917 INFO L93 Difference]: Finished difference Result 1585 states and 2380 transitions. [2024-12-02 08:51:15,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:51:15,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2024-12-02 08:51:15,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:51:15,921 INFO L225 Difference]: With dead ends: 1585 [2024-12-02 08:51:15,921 INFO L226 Difference]: Without dead ends: 1057 [2024-12-02 08:51:15,922 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:51:15,923 INFO L435 NwaCegarLoop]: 176 mSDtfsCounter, 61 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 267 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 [2024-12-02 08:51:15,923 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 267 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:51:15,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2024-12-02 08:51:15,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 1055. [2024-12-02 08:51:15,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1055 states, 1054 states have (on average 1.4819734345351043) internal successors, (1562), 1054 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:15,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1562 transitions. [2024-12-02 08:51:15,961 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1562 transitions. Word has length 69 [2024-12-02 08:51:15,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:51:15,962 INFO L471 AbstractCegarLoop]: Abstraction has 1055 states and 1562 transitions. [2024-12-02 08:51:15,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:15,962 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1562 transitions. [2024-12-02 08:51:15,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-12-02 08:51:15,962 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:51:15,962 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:51:15,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 08:51:15,963 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:51:15,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:51:15,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1111863489, now seen corresponding path program 1 times [2024-12-02 08:51:15,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:51:15,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316916660] [2024-12-02 08:51:15,963 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:51:15,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:51:15,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:51:16,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:51:16,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:51:16,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316916660] [2024-12-02 08:51:16,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316916660] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:51:16,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:51:16,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:51:16,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214122357] [2024-12-02 08:51:16,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:51:16,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:51:16,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:51:16,026 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:51:16,026 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:51:16,026 INFO L87 Difference]: Start difference. First operand 1055 states and 1562 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:16,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:51:16,074 INFO L93 Difference]: Finished difference Result 2971 states and 4420 transitions. [2024-12-02 08:51:16,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:51:16,075 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2024-12-02 08:51:16,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:51:16,082 INFO L225 Difference]: With dead ends: 2971 [2024-12-02 08:51:16,082 INFO L226 Difference]: Without dead ends: 1965 [2024-12-02 08:51:16,083 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:51:16,084 INFO L435 NwaCegarLoop]: 174 mSDtfsCounter, 59 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 269 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 [2024-12-02 08:51:16,084 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 269 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:51:16,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2024-12-02 08:51:16,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 1963. [2024-12-02 08:51:16,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1963 states, 1962 states have (on average 1.4689092762487257) internal successors, (2882), 1962 states have internal predecessors, (2882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:16,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1963 states to 1963 states and 2882 transitions. [2024-12-02 08:51:16,161 INFO L78 Accepts]: Start accepts. Automaton has 1963 states and 2882 transitions. Word has length 69 [2024-12-02 08:51:16,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:51:16,162 INFO L471 AbstractCegarLoop]: Abstraction has 1963 states and 2882 transitions. [2024-12-02 08:51:16,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:16,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1963 states and 2882 transitions. [2024-12-02 08:51:16,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-12-02 08:51:16,162 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:51:16,162 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:51:16,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 08:51:16,163 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:51:16,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:51:16,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1402170943, now seen corresponding path program 1 times [2024-12-02 08:51:16,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:51:16,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560432626] [2024-12-02 08:51:16,163 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:51:16,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:51:16,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:51:16,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:51:16,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:51:16,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560432626] [2024-12-02 08:51:16,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560432626] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:51:16,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:51:16,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:51:16,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872785980] [2024-12-02 08:51:16,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:51:16,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:51:16,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:51:16,228 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:51:16,228 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:51:16,228 INFO L87 Difference]: Start difference. First operand 1963 states and 2882 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:16,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:51:16,311 INFO L93 Difference]: Finished difference Result 5599 states and 8212 transitions. [2024-12-02 08:51:16,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:51:16,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2024-12-02 08:51:16,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:51:16,325 INFO L225 Difference]: With dead ends: 5599 [2024-12-02 08:51:16,325 INFO L226 Difference]: Without dead ends: 3685 [2024-12-02 08:51:16,327 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:51:16,328 INFO L435 NwaCegarLoop]: 172 mSDtfsCounter, 57 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 271 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 [2024-12-02 08:51:16,328 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 271 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:51:16,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3685 states. [2024-12-02 08:51:16,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3685 to 3683. [2024-12-02 08:51:16,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3683 states, 3682 states have (on average 1.4475828354155351) internal successors, (5330), 3682 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:16,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3683 states to 3683 states and 5330 transitions. [2024-12-02 08:51:16,476 INFO L78 Accepts]: Start accepts. Automaton has 3683 states and 5330 transitions. Word has length 69 [2024-12-02 08:51:16,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:51:16,476 INFO L471 AbstractCegarLoop]: Abstraction has 3683 states and 5330 transitions. [2024-12-02 08:51:16,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:16,476 INFO L276 IsEmpty]: Start isEmpty. Operand 3683 states and 5330 transitions. [2024-12-02 08:51:16,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-12-02 08:51:16,477 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:51:16,477 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:51:16,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 08:51:16,477 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:51:16,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:51:16,477 INFO L85 PathProgramCache]: Analyzing trace with hash 2089070273, now seen corresponding path program 1 times [2024-12-02 08:51:16,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:51:16,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864556723] [2024-12-02 08:51:16,478 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:51:16,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:51:16,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:51:16,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:51:16,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:51:16,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864556723] [2024-12-02 08:51:16,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864556723] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:51:16,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:51:16,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:51:16,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666957876] [2024-12-02 08:51:16,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:51:16,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:51:16,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:51:16,544 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:51:16,544 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:51:16,545 INFO L87 Difference]: Start difference. First operand 3683 states and 5330 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:16,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:51:16,692 INFO L93 Difference]: Finished difference Result 10567 states and 15220 transitions. [2024-12-02 08:51:16,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:51:16,693 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2024-12-02 08:51:16,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:51:16,718 INFO L225 Difference]: With dead ends: 10567 [2024-12-02 08:51:16,718 INFO L226 Difference]: Without dead ends: 6933 [2024-12-02 08:51:16,722 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:51:16,723 INFO L435 NwaCegarLoop]: 186 mSDtfsCounter, 63 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 273 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 [2024-12-02 08:51:16,723 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 273 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:51:16,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6933 states. [2024-12-02 08:51:16,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6933 to 6931. [2024-12-02 08:51:16,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6931 states, 6930 states have (on average 1.4202020202020202) internal successors, (9842), 6930 states have internal predecessors, (9842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:17,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6931 states to 6931 states and 9842 transitions. [2024-12-02 08:51:17,014 INFO L78 Accepts]: Start accepts. Automaton has 6931 states and 9842 transitions. Word has length 69 [2024-12-02 08:51:17,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:51:17,014 INFO L471 AbstractCegarLoop]: Abstraction has 6931 states and 9842 transitions. [2024-12-02 08:51:17,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:17,014 INFO L276 IsEmpty]: Start isEmpty. Operand 6931 states and 9842 transitions. [2024-12-02 08:51:17,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-12-02 08:51:17,017 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:51:17,018 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:51:17,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 08:51:17,018 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:51:17,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:51:17,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1702734658, now seen corresponding path program 1 times [2024-12-02 08:51:17,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:51:17,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783734151] [2024-12-02 08:51:17,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:51:17,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:51:17,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:51:17,230 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 08:51:17,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:51:17,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783734151] [2024-12-02 08:51:17,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783734151] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:51:17,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:51:17,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 08:51:17,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425372730] [2024-12-02 08:51:17,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:51:17,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 08:51:17,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:51:17,231 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 08:51:17,231 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-12-02 08:51:17,232 INFO L87 Difference]: Start difference. First operand 6931 states and 9842 transitions. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:18,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:51:18,124 INFO L93 Difference]: Finished difference Result 47649 states and 67737 transitions. [2024-12-02 08:51:18,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 08:51:18,124 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 0 states have call successors, (0), 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 91 [2024-12-02 08:51:18,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:51:18,212 INFO L225 Difference]: With dead ends: 47649 [2024-12-02 08:51:18,212 INFO L226 Difference]: Without dead ends: 42783 [2024-12-02 08:51:18,222 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-12-02 08:51:18,223 INFO L435 NwaCegarLoop]: 199 mSDtfsCounter, 893 mSDsluCounter, 964 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 893 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:51:18,223 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [893 Valid, 1163 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 08:51:18,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42783 states. [2024-12-02 08:51:18,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42783 to 12819. [2024-12-02 08:51:18,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12819 states, 12818 states have (on average 1.4144172257762522) internal successors, (18130), 12818 states have internal predecessors, (18130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:18,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12819 states to 12819 states and 18130 transitions. [2024-12-02 08:51:18,691 INFO L78 Accepts]: Start accepts. Automaton has 12819 states and 18130 transitions. Word has length 91 [2024-12-02 08:51:18,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:51:18,691 INFO L471 AbstractCegarLoop]: Abstraction has 12819 states and 18130 transitions. [2024-12-02 08:51:18,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:18,691 INFO L276 IsEmpty]: Start isEmpty. Operand 12819 states and 18130 transitions. [2024-12-02 08:51:18,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-12-02 08:51:18,693 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:51:18,694 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:51:18,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 08:51:18,694 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:51:18,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:51:18,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1539820098, now seen corresponding path program 1 times [2024-12-02 08:51:18,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:51:18,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999465353] [2024-12-02 08:51:18,695 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:51:18,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:51:18,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:51:18,844 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 08:51:18,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:51:18,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999465353] [2024-12-02 08:51:18,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999465353] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:51:18,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:51:18,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 08:51:18,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526651758] [2024-12-02 08:51:18,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:51:18,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 08:51:18,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:51:18,845 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 08:51:18,845 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-12-02 08:51:18,845 INFO L87 Difference]: Start difference. First operand 12819 states and 18130 transitions. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:19,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:51:19,655 INFO L93 Difference]: Finished difference Result 54529 states and 77465 transitions. [2024-12-02 08:51:19,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 08:51:19,655 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 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 91 [2024-12-02 08:51:19,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:51:19,722 INFO L225 Difference]: With dead ends: 54529 [2024-12-02 08:51:19,723 INFO L226 Difference]: Without dead ends: 47647 [2024-12-02 08:51:19,733 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-12-02 08:51:19,734 INFO L435 NwaCegarLoop]: 198 mSDtfsCounter, 895 mSDsluCounter, 922 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:51:19,734 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [895 Valid, 1120 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 08:51:19,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47647 states. [2024-12-02 08:51:20,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47647 to 22131. [2024-12-02 08:51:20,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22131 states, 22130 states have (on average 1.4106642566651604) internal successors, (31218), 22130 states have internal predecessors, (31218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:20,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22131 states to 22131 states and 31218 transitions. [2024-12-02 08:51:20,717 INFO L78 Accepts]: Start accepts. Automaton has 22131 states and 31218 transitions. Word has length 91 [2024-12-02 08:51:20,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:51:20,717 INFO L471 AbstractCegarLoop]: Abstraction has 22131 states and 31218 transitions. [2024-12-02 08:51:20,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:20,718 INFO L276 IsEmpty]: Start isEmpty. Operand 22131 states and 31218 transitions. [2024-12-02 08:51:20,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-12-02 08:51:20,722 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:51:20,722 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:51:20,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 08:51:20,722 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:51:20,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:51:20,723 INFO L85 PathProgramCache]: Analyzing trace with hash -37701698, now seen corresponding path program 1 times [2024-12-02 08:51:20,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:51:20,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63458519] [2024-12-02 08:51:20,723 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:51:20,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:51:20,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:51:20,978 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 08:51:20,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:51:20,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63458519] [2024-12-02 08:51:20,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63458519] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:51:20,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:51:20,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 08:51:20,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827674612] [2024-12-02 08:51:20,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:51:20,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 08:51:20,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:51:20,979 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 08:51:20,979 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-12-02 08:51:20,980 INFO L87 Difference]: Start difference. First operand 22131 states and 31218 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:21,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:51:21,977 INFO L93 Difference]: Finished difference Result 61409 states and 87161 transitions. [2024-12-02 08:51:21,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 08:51:21,978 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 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 91 [2024-12-02 08:51:21,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:51:22,056 INFO L225 Difference]: With dead ends: 61409 [2024-12-02 08:51:22,056 INFO L226 Difference]: Without dead ends: 54527 [2024-12-02 08:51:22,068 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-12-02 08:51:22,069 INFO L435 NwaCegarLoop]: 196 mSDtfsCounter, 939 mSDsluCounter, 938 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:51:22,069 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [939 Valid, 1134 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 08:51:22,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54527 states. [2024-12-02 08:51:22,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54527 to 29011. [2024-12-02 08:51:22,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29011 states, 29010 states have (on average 1.4103412616339193) internal successors, (40914), 29010 states have internal predecessors, (40914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:22,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29011 states to 29011 states and 40914 transitions. [2024-12-02 08:51:22,937 INFO L78 Accepts]: Start accepts. Automaton has 29011 states and 40914 transitions. Word has length 91 [2024-12-02 08:51:22,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:51:22,937 INFO L471 AbstractCegarLoop]: Abstraction has 29011 states and 40914 transitions. [2024-12-02 08:51:22,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:22,937 INFO L276 IsEmpty]: Start isEmpty. Operand 29011 states and 40914 transitions. [2024-12-02 08:51:22,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-12-02 08:51:22,941 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:51:22,941 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:51:22,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 08:51:22,941 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:51:22,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:51:22,941 INFO L85 PathProgramCache]: Analyzing trace with hash 2041796798, now seen corresponding path program 1 times [2024-12-02 08:51:22,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:51:22,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496371128] [2024-12-02 08:51:22,941 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:51:22,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:51:22,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:51:23,184 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-02 08:51:23,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:51:23,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496371128] [2024-12-02 08:51:23,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496371128] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:51:23,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:51:23,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 08:51:23,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755004613] [2024-12-02 08:51:23,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:51:23,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 08:51:23,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:51:23,186 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 08:51:23,186 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-12-02 08:51:23,186 INFO L87 Difference]: Start difference. First operand 29011 states and 40914 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:24,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:51:24,463 INFO L93 Difference]: Finished difference Result 68289 states and 96857 transitions. [2024-12-02 08:51:24,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 08:51:24,464 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2024-12-02 08:51:24,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:51:24,515 INFO L225 Difference]: With dead ends: 68289 [2024-12-02 08:51:24,515 INFO L226 Difference]: Without dead ends: 61407 [2024-12-02 08:51:24,526 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-12-02 08:51:24,526 INFO L435 NwaCegarLoop]: 194 mSDtfsCounter, 997 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 997 SdHoareTripleChecker+Valid, 1078 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:51:24,526 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [997 Valid, 1078 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 08:51:24,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61407 states. [2024-12-02 08:51:25,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61407 to 35891. [2024-12-02 08:51:25,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35891 states, 35890 states have (on average 1.4101421008637502) internal successors, (50610), 35890 states have internal predecessors, (50610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:25,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35891 states to 35891 states and 50610 transitions. [2024-12-02 08:51:25,371 INFO L78 Accepts]: Start accepts. Automaton has 35891 states and 50610 transitions. Word has length 91 [2024-12-02 08:51:25,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:51:25,371 INFO L471 AbstractCegarLoop]: Abstraction has 35891 states and 50610 transitions. [2024-12-02 08:51:25,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:25,371 INFO L276 IsEmpty]: Start isEmpty. Operand 35891 states and 50610 transitions. [2024-12-02 08:51:25,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-12-02 08:51:25,374 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:51:25,374 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:51:25,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 08:51:25,374 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:51:25,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:51:25,374 INFO L85 PathProgramCache]: Analyzing trace with hash -472237634, now seen corresponding path program 1 times [2024-12-02 08:51:25,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:51:25,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421393590] [2024-12-02 08:51:25,374 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:51:25,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:51:25,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:51:25,511 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-02 08:51:25,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:51:25,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421393590] [2024-12-02 08:51:25,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421393590] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:51:25,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:51:25,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 08:51:25,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887310181] [2024-12-02 08:51:25,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:51:25,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 08:51:25,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:51:25,513 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 08:51:25,513 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-12-02 08:51:25,513 INFO L87 Difference]: Start difference. First operand 35891 states and 50610 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:26,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:51:26,566 INFO L93 Difference]: Finished difference Result 75169 states and 106553 transitions. [2024-12-02 08:51:26,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 08:51:26,567 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 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 91 [2024-12-02 08:51:26,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:51:26,618 INFO L225 Difference]: With dead ends: 75169 [2024-12-02 08:51:26,618 INFO L226 Difference]: Without dead ends: 68287 [2024-12-02 08:51:26,630 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-12-02 08:51:26,631 INFO L435 NwaCegarLoop]: 194 mSDtfsCounter, 905 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 1156 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:51:26,631 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [905 Valid, 1156 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 08:51:26,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68287 states. [2024-12-02 08:51:27,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68287 to 42771. [2024-12-02 08:51:27,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42771 states, 42770 states have (on average 1.4100070142623333) internal successors, (60306), 42770 states have internal predecessors, (60306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:27,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42771 states to 42771 states and 60306 transitions. [2024-12-02 08:51:27,935 INFO L78 Accepts]: Start accepts. Automaton has 42771 states and 60306 transitions. Word has length 91 [2024-12-02 08:51:27,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:51:27,935 INFO L471 AbstractCegarLoop]: Abstraction has 42771 states and 60306 transitions. [2024-12-02 08:51:27,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:27,935 INFO L276 IsEmpty]: Start isEmpty. Operand 42771 states and 60306 transitions. [2024-12-02 08:51:27,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-12-02 08:51:27,939 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:51:27,939 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:51:27,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 08:51:27,939 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:51:27,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:51:27,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1275963714, now seen corresponding path program 1 times [2024-12-02 08:51:27,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:51:27,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801025123] [2024-12-02 08:51:27,939 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:51:27,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:51:27,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:51:28,114 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-12-02 08:51:28,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:51:28,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801025123] [2024-12-02 08:51:28,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801025123] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:51:28,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:51:28,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 08:51:28,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123977062] [2024-12-02 08:51:28,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:51:28,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 08:51:28,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:51:28,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 08:51:28,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-12-02 08:51:28,116 INFO L87 Difference]: Start difference. First operand 42771 states and 60306 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:29,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:51:29,789 INFO L93 Difference]: Finished difference Result 82049 states and 116249 transitions. [2024-12-02 08:51:29,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 08:51:29,790 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 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 91 [2024-12-02 08:51:29,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:51:29,846 INFO L225 Difference]: With dead ends: 82049 [2024-12-02 08:51:29,846 INFO L226 Difference]: Without dead ends: 75167 [2024-12-02 08:51:29,857 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-12-02 08:51:29,857 INFO L435 NwaCegarLoop]: 193 mSDtfsCounter, 844 mSDsluCounter, 1084 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 1277 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:51:29,858 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 1277 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 08:51:29,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75167 states. [2024-12-02 08:51:30,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75167 to 49651. [2024-12-02 08:51:30,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49651 states, 49650 states have (on average 1.4099093655589123) internal successors, (70002), 49650 states have internal predecessors, (70002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:30,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49651 states to 49651 states and 70002 transitions. [2024-12-02 08:51:30,988 INFO L78 Accepts]: Start accepts. Automaton has 49651 states and 70002 transitions. Word has length 91 [2024-12-02 08:51:30,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:51:30,988 INFO L471 AbstractCegarLoop]: Abstraction has 49651 states and 70002 transitions. [2024-12-02 08:51:30,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:30,988 INFO L276 IsEmpty]: Start isEmpty. Operand 49651 states and 70002 transitions. [2024-12-02 08:51:30,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-12-02 08:51:30,990 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:51:30,990 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:51:30,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 08:51:30,991 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:51:30,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:51:30,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1294112570, now seen corresponding path program 1 times [2024-12-02 08:51:30,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:51:30,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247866426] [2024-12-02 08:51:30,991 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:51:30,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:51:31,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:51:31,091 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:51:31,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:51:31,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247866426] [2024-12-02 08:51:31,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247866426] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:51:31,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:51:31,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:51:31,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520836465] [2024-12-02 08:51:31,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:51:31,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:51:31,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:51:31,092 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:51:31,093 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:51:31,093 INFO L87 Difference]: Start difference. First operand 49651 states and 70002 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:31,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:51:31,961 INFO L93 Difference]: Finished difference Result 99255 states and 139956 transitions. [2024-12-02 08:51:31,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:51:31,962 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2024-12-02 08:51:31,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:51:32,005 INFO L225 Difference]: With dead ends: 99255 [2024-12-02 08:51:32,006 INFO L226 Difference]: Without dead ends: 49653 [2024-12-02 08:51:32,030 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:51:32,030 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 53 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 279 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 [2024-12-02 08:51:32,030 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 279 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:51:32,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49653 states. [2024-12-02 08:51:32,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49653 to 49651. [2024-12-02 08:51:33,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49651 states, 49650 states have (on average 1.3960523665659617) internal successors, (69314), 49650 states have internal predecessors, (69314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:33,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49651 states to 49651 states and 69314 transitions. [2024-12-02 08:51:33,062 INFO L78 Accepts]: Start accepts. Automaton has 49651 states and 69314 transitions. Word has length 92 [2024-12-02 08:51:33,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:51:33,062 INFO L471 AbstractCegarLoop]: Abstraction has 49651 states and 69314 transitions. [2024-12-02 08:51:33,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:33,062 INFO L276 IsEmpty]: Start isEmpty. Operand 49651 states and 69314 transitions. [2024-12-02 08:51:33,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-12-02 08:51:33,064 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:51:33,064 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:51:33,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 08:51:33,064 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:51:33,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:51:33,065 INFO L85 PathProgramCache]: Analyzing trace with hash 647402166, now seen corresponding path program 1 times [2024-12-02 08:51:33,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:51:33,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983181267] [2024-12-02 08:51:33,065 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:51:33,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:51:33,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:51:33,166 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:51:33,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:51:33,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983181267] [2024-12-02 08:51:33,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983181267] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:51:33,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:51:33,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:51:33,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546769512] [2024-12-02 08:51:33,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:51:33,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:51:33,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:51:33,168 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:51:33,168 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:51:33,168 INFO L87 Difference]: Start difference. First operand 49651 states and 69314 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:33,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:51:33,558 INFO L93 Difference]: Finished difference Result 67917 states and 95019 transitions. [2024-12-02 08:51:33,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:51:33,558 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2024-12-02 08:51:33,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:51:33,572 INFO L225 Difference]: With dead ends: 67917 [2024-12-02 08:51:33,572 INFO L226 Difference]: Without dead ends: 18315 [2024-12-02 08:51:33,593 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:51:33,593 INFO L435 NwaCegarLoop]: 165 mSDtfsCounter, 47 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 276 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 [2024-12-02 08:51:33,594 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 276 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:51:33,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18315 states. [2024-12-02 08:51:34,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18315 to 18306. [2024-12-02 08:51:34,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18306 states, 18305 states have (on average 1.3933351543294181) internal successors, (25505), 18305 states have internal predecessors, (25505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:34,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18306 states to 18306 states and 25505 transitions. [2024-12-02 08:51:34,133 INFO L78 Accepts]: Start accepts. Automaton has 18306 states and 25505 transitions. Word has length 93 [2024-12-02 08:51:34,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:51:34,134 INFO L471 AbstractCegarLoop]: Abstraction has 18306 states and 25505 transitions. [2024-12-02 08:51:34,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:34,134 INFO L276 IsEmpty]: Start isEmpty. Operand 18306 states and 25505 transitions. [2024-12-02 08:51:34,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-12-02 08:51:34,135 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:51:34,135 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:51:34,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 08:51:34,136 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:51:34,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:51:34,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1000464468, now seen corresponding path program 1 times [2024-12-02 08:51:34,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:51:34,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638088376] [2024-12-02 08:51:34,136 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:51:34,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:51:34,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:51:34,265 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:51:34,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:51:34,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638088376] [2024-12-02 08:51:34,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638088376] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:51:34,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:51:34,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:51:34,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052563327] [2024-12-02 08:51:34,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:51:34,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:51:34,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:51:34,266 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:51:34,266 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:51:34,266 INFO L87 Difference]: Start difference. First operand 18306 states and 25505 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:34,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:51:34,529 INFO L93 Difference]: Finished difference Result 27430 states and 38227 transitions. [2024-12-02 08:51:34,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:51:34,530 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2024-12-02 08:51:34,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:51:34,538 INFO L225 Difference]: With dead ends: 27430 [2024-12-02 08:51:34,538 INFO L226 Difference]: Without dead ends: 9188 [2024-12-02 08:51:34,545 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:51:34,545 INFO L435 NwaCegarLoop]: 159 mSDtfsCounter, 49 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 255 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 [2024-12-02 08:51:34,546 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 255 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:51:34,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9188 states. [2024-12-02 08:51:34,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9188 to 9186. [2024-12-02 08:51:34,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9186 states, 9185 states have (on average 1.3788786064235166) internal successors, (12665), 9185 states have internal predecessors, (12665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:34,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9186 states to 9186 states and 12665 transitions. [2024-12-02 08:51:34,818 INFO L78 Accepts]: Start accepts. Automaton has 9186 states and 12665 transitions. Word has length 94 [2024-12-02 08:51:34,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:51:34,819 INFO L471 AbstractCegarLoop]: Abstraction has 9186 states and 12665 transitions. [2024-12-02 08:51:34,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:34,819 INFO L276 IsEmpty]: Start isEmpty. Operand 9186 states and 12665 transitions. [2024-12-02 08:51:34,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-12-02 08:51:34,821 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:51:34,821 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:51:34,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 08:51:34,822 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:51:34,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:51:34,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1898811038, now seen corresponding path program 1 times [2024-12-02 08:51:34,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:51:34,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719363108] [2024-12-02 08:51:34,822 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:51:34,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:51:34,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:51:34,934 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:51:34,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:51:34,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719363108] [2024-12-02 08:51:34,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719363108] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:51:34,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:51:34,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:51:34,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491089801] [2024-12-02 08:51:34,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:51:34,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:51:34,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:51:34,935 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:51:34,935 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:51:34,935 INFO L87 Difference]: Start difference. First operand 9186 states and 12665 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:35,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:51:35,059 INFO L93 Difference]: Finished difference Result 13750 states and 18967 transitions. [2024-12-02 08:51:35,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:51:35,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2024-12-02 08:51:35,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:51:35,066 INFO L225 Difference]: With dead ends: 13750 [2024-12-02 08:51:35,066 INFO L226 Difference]: Without dead ends: 4628 [2024-12-02 08:51:35,070 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:51:35,071 INFO L435 NwaCegarLoop]: 152 mSDtfsCounter, 46 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 240 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 [2024-12-02 08:51:35,072 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 240 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:51:35,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4628 states. [2024-12-02 08:51:35,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4628 to 4626. [2024-12-02 08:51:35,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4626 states, 4625 states have (on average 1.3632432432432433) internal successors, (6305), 4625 states have internal predecessors, (6305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:35,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4626 states to 4626 states and 6305 transitions. [2024-12-02 08:51:35,210 INFO L78 Accepts]: Start accepts. Automaton has 4626 states and 6305 transitions. Word has length 96 [2024-12-02 08:51:35,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:51:35,210 INFO L471 AbstractCegarLoop]: Abstraction has 4626 states and 6305 transitions. [2024-12-02 08:51:35,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:35,211 INFO L276 IsEmpty]: Start isEmpty. Operand 4626 states and 6305 transitions. [2024-12-02 08:51:35,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-12-02 08:51:35,211 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:51:35,212 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:51:35,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-02 08:51:35,212 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:51:35,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:51:35,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1409022960, now seen corresponding path program 1 times [2024-12-02 08:51:35,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:51:35,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119529732] [2024-12-02 08:51:35,212 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:51:35,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:51:35,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:51:35,320 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:51:35,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:51:35,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119529732] [2024-12-02 08:51:35,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119529732] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:51:35,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:51:35,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:51:35,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313777162] [2024-12-02 08:51:35,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:51:35,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:51:35,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:51:35,322 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:51:35,322 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:51:35,322 INFO L87 Difference]: Start difference. First operand 4626 states and 6305 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:35,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:51:35,421 INFO L93 Difference]: Finished difference Result 6910 states and 9427 transitions. [2024-12-02 08:51:35,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:51:35,421 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2024-12-02 08:51:35,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:51:35,426 INFO L225 Difference]: With dead ends: 6910 [2024-12-02 08:51:35,426 INFO L226 Difference]: Without dead ends: 2348 [2024-12-02 08:51:35,428 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:51:35,429 INFO L435 NwaCegarLoop]: 145 mSDtfsCounter, 43 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 225 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 [2024-12-02 08:51:35,429 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 225 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:51:35,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2348 states. [2024-12-02 08:51:35,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2348 to 2346. [2024-12-02 08:51:35,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2346 states, 2345 states have (on average 1.3454157782515992) internal successors, (3155), 2345 states have internal predecessors, (3155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:35,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2346 states to 2346 states and 3155 transitions. [2024-12-02 08:51:35,505 INFO L78 Accepts]: Start accepts. Automaton has 2346 states and 3155 transitions. Word has length 98 [2024-12-02 08:51:35,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:51:35,505 INFO L471 AbstractCegarLoop]: Abstraction has 2346 states and 3155 transitions. [2024-12-02 08:51:35,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:35,505 INFO L276 IsEmpty]: Start isEmpty. Operand 2346 states and 3155 transitions. [2024-12-02 08:51:35,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-12-02 08:51:35,506 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:51:35,506 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:51:35,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-02 08:51:35,506 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:51:35,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:51:35,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1388093442, now seen corresponding path program 1 times [2024-12-02 08:51:35,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:51:35,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953696369] [2024-12-02 08:51:35,506 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:51:35,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:51:35,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:51:35,631 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:51:35,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:51:35,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953696369] [2024-12-02 08:51:35,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953696369] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:51:35,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:51:35,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:51:35,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180765800] [2024-12-02 08:51:35,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:51:35,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:51:35,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:51:35,632 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:51:35,632 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:51:35,632 INFO L87 Difference]: Start difference. First operand 2346 states and 3155 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:35,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:51:35,680 INFO L93 Difference]: Finished difference Result 3490 states and 4702 transitions. [2024-12-02 08:51:35,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:51:35,681 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2024-12-02 08:51:35,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:51:35,683 INFO L225 Difference]: With dead ends: 3490 [2024-12-02 08:51:35,683 INFO L226 Difference]: Without dead ends: 1208 [2024-12-02 08:51:35,684 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:51:35,684 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 40 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 210 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 [2024-12-02 08:51:35,685 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 210 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:51:35,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1208 states. [2024-12-02 08:51:35,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1208 to 1206. [2024-12-02 08:51:35,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 1205 states have (on average 1.3236514522821576) internal successors, (1595), 1205 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:35,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 1595 transitions. [2024-12-02 08:51:35,720 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 1595 transitions. Word has length 100 [2024-12-02 08:51:35,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:51:35,720 INFO L471 AbstractCegarLoop]: Abstraction has 1206 states and 1595 transitions. [2024-12-02 08:51:35,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:35,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 1595 transitions. [2024-12-02 08:51:35,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-12-02 08:51:35,721 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:51:35,721 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:51:35,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-12-02 08:51:35,721 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:51:35,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:51:35,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1164279180, now seen corresponding path program 1 times [2024-12-02 08:51:35,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:51:35,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047519822] [2024-12-02 08:51:35,722 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:51:35,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:51:35,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:51:36,642 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:51:36,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:51:36,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047519822] [2024-12-02 08:51:36,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047519822] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:51:36,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320469670] [2024-12-02 08:51:36,643 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:51:36,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:51:36,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:51:36,645 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:51:36,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 08:51:36,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:51:36,806 INFO L256 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-12-02 08:51:36,812 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:51:37,043 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 08:51:37,043 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:51:37,625 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 08:51:37,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320469670] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:51:37,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:51:37,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 4] total 19 [2024-12-02 08:51:37,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753045754] [2024-12-02 08:51:37,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:51:37,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-12-02 08:51:37,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:51:37,627 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-12-02 08:51:37,628 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2024-12-02 08:51:37,628 INFO L87 Difference]: Start difference. First operand 1206 states and 1595 transitions. Second operand has 19 states, 19 states have (on average 15.157894736842104) internal successors, (288), 19 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:39,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:51:39,528 INFO L93 Difference]: Finished difference Result 6713 states and 8820 transitions. [2024-12-02 08:51:39,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-12-02 08:51:39,529 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 15.157894736842104) internal successors, (288), 19 states have internal predecessors, (288), 0 states have call successors, (0), 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 102 [2024-12-02 08:51:39,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:51:39,534 INFO L225 Difference]: With dead ends: 6713 [2024-12-02 08:51:39,535 INFO L226 Difference]: Without dead ends: 5571 [2024-12-02 08:51:39,537 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 721 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=539, Invalid=2217, Unknown=0, NotChecked=0, Total=2756 [2024-12-02 08:51:39,537 INFO L435 NwaCegarLoop]: 86 mSDtfsCounter, 1775 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1775 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 08:51:39,537 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1775 Valid, 815 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 745 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 08:51:39,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5571 states. [2024-12-02 08:51:39,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5571 to 5351. [2024-12-02 08:51:39,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5351 states, 5350 states have (on average 1.283551401869159) internal successors, (6867), 5350 states have internal predecessors, (6867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:39,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5351 states to 5351 states and 6867 transitions. [2024-12-02 08:51:39,657 INFO L78 Accepts]: Start accepts. Automaton has 5351 states and 6867 transitions. Word has length 102 [2024-12-02 08:51:39,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:51:39,657 INFO L471 AbstractCegarLoop]: Abstraction has 5351 states and 6867 transitions. [2024-12-02 08:51:39,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 15.157894736842104) internal successors, (288), 19 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:39,657 INFO L276 IsEmpty]: Start isEmpty. Operand 5351 states and 6867 transitions. [2024-12-02 08:51:39,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-12-02 08:51:39,658 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:51:39,658 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:51:39,664 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 08:51:39,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-12-02 08:51:39,858 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:51:39,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:51:39,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1879536338, now seen corresponding path program 1 times [2024-12-02 08:51:39,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:51:39,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113509368] [2024-12-02 08:51:39,859 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:51:39,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:51:39,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:51:40,484 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:51:40,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:51:40,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113509368] [2024-12-02 08:51:40,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113509368] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:51:40,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268265638] [2024-12-02 08:51:40,484 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:51:40,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:51:40,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:51:40,486 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:51:40,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 08:51:40,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:51:40,626 INFO L256 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 08:51:40,629 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:51:41,028 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:51:41,028 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:51:42,082 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:51:42,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268265638] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:51:42,082 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:51:42,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 28 [2024-12-02 08:51:42,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157703584] [2024-12-02 08:51:42,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:51:42,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-12-02 08:51:42,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:51:42,083 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-12-02 08:51:42,084 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=702, Unknown=0, NotChecked=0, Total=812 [2024-12-02 08:51:42,084 INFO L87 Difference]: Start difference. First operand 5351 states and 6867 transitions. Second operand has 29 states, 29 states have (on average 9.344827586206897) internal successors, (271), 28 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:43,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:51:43,524 INFO L93 Difference]: Finished difference Result 25386 states and 32859 transitions. [2024-12-02 08:51:43,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-12-02 08:51:43,525 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 9.344827586206897) internal successors, (271), 28 states have internal predecessors, (271), 0 states have call successors, (0), 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 103 [2024-12-02 08:51:43,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:51:43,544 INFO L225 Difference]: With dead ends: 25386 [2024-12-02 08:51:43,544 INFO L226 Difference]: Without dead ends: 20850 [2024-12-02 08:51:43,550 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 681 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=647, Invalid=2433, Unknown=0, NotChecked=0, Total=3080 [2024-12-02 08:51:43,551 INFO L435 NwaCegarLoop]: 93 mSDtfsCounter, 2297 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2297 SdHoareTripleChecker+Valid, 994 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 08:51:43,551 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2297 Valid, 994 Invalid, 920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 08:51:43,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20850 states. [2024-12-02 08:51:44,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20850 to 20838. [2024-12-02 08:51:44,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20838 states, 20837 states have (on average 1.2843499544080241) internal successors, (26762), 20837 states have internal predecessors, (26762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:44,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20838 states to 20838 states and 26762 transitions. [2024-12-02 08:51:44,145 INFO L78 Accepts]: Start accepts. Automaton has 20838 states and 26762 transitions. Word has length 103 [2024-12-02 08:51:44,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:51:44,145 INFO L471 AbstractCegarLoop]: Abstraction has 20838 states and 26762 transitions. [2024-12-02 08:51:44,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 9.344827586206897) internal successors, (271), 28 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:44,145 INFO L276 IsEmpty]: Start isEmpty. Operand 20838 states and 26762 transitions. [2024-12-02 08:51:44,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-12-02 08:51:44,146 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:51:44,146 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:51:44,152 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 08:51:44,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-12-02 08:51:44,347 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:51:44,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:51:44,347 INFO L85 PathProgramCache]: Analyzing trace with hash 463878702, now seen corresponding path program 1 times [2024-12-02 08:51:44,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:51:44,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044510780] [2024-12-02 08:51:44,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:51:44,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:51:44,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:51:45,594 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:51:45,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:51:45,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044510780] [2024-12-02 08:51:45,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044510780] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:51:45,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278860645] [2024-12-02 08:51:45,595 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:51:45,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:51:45,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:51:45,596 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:51:45,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 08:51:45,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:51:45,732 INFO L256 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 08:51:45,734 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:51:46,155 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:51:46,155 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:51:47,048 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:51:47,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278860645] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:51:47,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:51:47,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2024-12-02 08:51:47,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341012646] [2024-12-02 08:51:47,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:51:47,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-12-02 08:51:47,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:51:47,050 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-12-02 08:51:47,050 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=669, Unknown=0, NotChecked=0, Total=756 [2024-12-02 08:51:47,051 INFO L87 Difference]: Start difference. First operand 20838 states and 26762 transitions. Second operand has 28 states, 28 states have (on average 10.071428571428571) internal successors, (282), 27 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:50,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:51:50,787 INFO L93 Difference]: Finished difference Result 87546 states and 114301 transitions. [2024-12-02 08:51:50,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-12-02 08:51:50,787 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 10.071428571428571) internal successors, (282), 27 states have internal predecessors, (282), 0 states have call successors, (0), 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 103 [2024-12-02 08:51:50,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:51:50,832 INFO L225 Difference]: With dead ends: 87546 [2024-12-02 08:51:50,832 INFO L226 Difference]: Without dead ends: 67342 [2024-12-02 08:51:50,847 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 736 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=830, Invalid=2952, Unknown=0, NotChecked=0, Total=3782 [2024-12-02 08:51:50,847 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 2341 mSDsluCounter, 1011 mSDsCounter, 0 mSdLazyCounter, 1098 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2341 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 1145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 08:51:50,848 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2341 Valid, 1091 Invalid, 1145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1098 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 08:51:50,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67342 states. [2024-12-02 08:51:52,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67342 to 66825. [2024-12-02 08:51:52,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66825 states, 66824 states have (on average 1.279345744044056) internal successors, (85491), 66824 states have internal predecessors, (85491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:52,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66825 states to 66825 states and 85491 transitions. [2024-12-02 08:51:52,423 INFO L78 Accepts]: Start accepts. Automaton has 66825 states and 85491 transitions. Word has length 103 [2024-12-02 08:51:52,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:51:52,423 INFO L471 AbstractCegarLoop]: Abstraction has 66825 states and 85491 transitions. [2024-12-02 08:51:52,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 10.071428571428571) internal successors, (282), 27 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:52,423 INFO L276 IsEmpty]: Start isEmpty. Operand 66825 states and 85491 transitions. [2024-12-02 08:51:52,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-12-02 08:51:52,424 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:51:52,425 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:51:52,430 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 08:51:52,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-12-02 08:51:52,625 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:51:52,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:51:52,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1591294046, now seen corresponding path program 1 times [2024-12-02 08:51:52,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:51:52,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571509251] [2024-12-02 08:51:52,626 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:51:52,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:51:52,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:51:52,919 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:51:52,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:51:52,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571509251] [2024-12-02 08:51:52,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571509251] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:51:52,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062316883] [2024-12-02 08:51:52,920 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:51:52,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:51:52,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:51:52,921 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:51:52,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 08:51:53,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:51:53,041 INFO L256 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-12-02 08:51:53,043 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:51:53,653 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:51:53,653 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:51:54,825 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:51:54,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062316883] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:51:54,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:51:54,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 30 [2024-12-02 08:51:54,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381549532] [2024-12-02 08:51:54,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:51:54,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-12-02 08:51:54,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:51:54,827 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-12-02 08:51:54,827 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=777, Unknown=0, NotChecked=0, Total=870 [2024-12-02 08:51:54,827 INFO L87 Difference]: Start difference. First operand 66825 states and 85491 transitions. Second operand has 30 states, 30 states have (on average 8.5) internal successors, (255), 30 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:57,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:51:57,702 INFO L93 Difference]: Finished difference Result 131414 states and 168326 transitions. [2024-12-02 08:51:57,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-12-02 08:51:57,703 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 8.5) internal successors, (255), 30 states have internal predecessors, (255), 0 states have call successors, (0), 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 104 [2024-12-02 08:51:57,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:51:57,749 INFO L225 Difference]: With dead ends: 131414 [2024-12-02 08:51:57,749 INFO L226 Difference]: Without dead ends: 66762 [2024-12-02 08:51:57,777 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=616, Invalid=2354, Unknown=0, NotChecked=0, Total=2970 [2024-12-02 08:51:57,778 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 2081 mSDsluCounter, 1024 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2081 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 08:51:57,778 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2081 Valid, 1100 Invalid, 938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 08:51:57,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66762 states. [2024-12-02 08:51:59,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66762 to 40473. [2024-12-02 08:51:59,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40473 states, 40472 states have (on average 1.2714222178296106) internal successors, (51457), 40472 states have internal predecessors, (51457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:59,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40473 states to 40473 states and 51457 transitions. [2024-12-02 08:51:59,056 INFO L78 Accepts]: Start accepts. Automaton has 40473 states and 51457 transitions. Word has length 104 [2024-12-02 08:51:59,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:51:59,056 INFO L471 AbstractCegarLoop]: Abstraction has 40473 states and 51457 transitions. [2024-12-02 08:51:59,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 8.5) internal successors, (255), 30 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:59,056 INFO L276 IsEmpty]: Start isEmpty. Operand 40473 states and 51457 transitions. [2024-12-02 08:51:59,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-12-02 08:51:59,057 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:51:59,057 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:51:59,064 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 08:51:59,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-12-02 08:51:59,258 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:51:59,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:51:59,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1768772890, now seen corresponding path program 1 times [2024-12-02 08:51:59,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:51:59,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204354298] [2024-12-02 08:51:59,258 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:51:59,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:51:59,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:51:59,468 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:51:59,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:51:59,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204354298] [2024-12-02 08:51:59,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204354298] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:51:59,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170445696] [2024-12-02 08:51:59,468 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:51:59,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:51:59,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:51:59,469 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:51:59,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 08:51:59,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:51:59,586 INFO L256 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-12-02 08:51:59,588 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:52:00,358 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:52:00,359 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:52:01,691 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:52:01,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170445696] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:52:01,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:52:01,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2024-12-02 08:52:01,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236536353] [2024-12-02 08:52:01,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:52:01,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-12-02 08:52:01,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:52:01,692 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-12-02 08:52:01,693 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=884, Unknown=0, NotChecked=0, Total=992 [2024-12-02 08:52:01,693 INFO L87 Difference]: Start difference. First operand 40473 states and 51457 transitions. Second operand has 32 states, 32 states have (on average 9.03125) internal successors, (289), 32 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:52:08,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:52:08,821 INFO L93 Difference]: Finished difference Result 128825 states and 162859 transitions. [2024-12-02 08:52:08,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2024-12-02 08:52:08,821 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 9.03125) internal successors, (289), 32 states have internal predecessors, (289), 0 states have call successors, (0), 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 104 [2024-12-02 08:52:08,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:52:08,884 INFO L225 Difference]: With dead ends: 128825 [2024-12-02 08:52:08,884 INFO L226 Difference]: Without dead ends: 92390 [2024-12-02 08:52:08,909 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4464 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=2228, Invalid=12052, Unknown=0, NotChecked=0, Total=14280 [2024-12-02 08:52:08,910 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 7906 mSDsluCounter, 1455 mSDsCounter, 0 mSdLazyCounter, 1485 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7906 SdHoareTripleChecker+Valid, 1539 SdHoareTripleChecker+Invalid, 1565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:52:08,910 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7906 Valid, 1539 Invalid, 1565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1485 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 08:52:08,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92390 states. [2024-12-02 08:52:10,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92390 to 33889. [2024-12-02 08:52:10,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33889 states, 33888 states have (on average 1.2443342776203965) internal successors, (42168), 33888 states have internal predecessors, (42168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:52:10,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33889 states to 33889 states and 42168 transitions. [2024-12-02 08:52:10,188 INFO L78 Accepts]: Start accepts. Automaton has 33889 states and 42168 transitions. Word has length 104 [2024-12-02 08:52:10,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:52:10,188 INFO L471 AbstractCegarLoop]: Abstraction has 33889 states and 42168 transitions. [2024-12-02 08:52:10,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 9.03125) internal successors, (289), 32 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:52:10,188 INFO L276 IsEmpty]: Start isEmpty. Operand 33889 states and 42168 transitions. [2024-12-02 08:52:10,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-12-02 08:52:10,189 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:52:10,189 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:52:10,198 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 08:52:10,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-12-02 08:52:10,389 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:52:10,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:52:10,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1743074282, now seen corresponding path program 1 times [2024-12-02 08:52:10,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:52:10,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989023896] [2024-12-02 08:52:10,390 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:52:10,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:52:10,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:52:10,745 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:52:10,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:52:10,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989023896] [2024-12-02 08:52:10,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989023896] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:52:10,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973354187] [2024-12-02 08:52:10,745 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:52:10,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:52:10,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:52:10,746 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:52:10,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 08:52:10,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:52:10,874 INFO L256 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-12-02 08:52:10,875 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:52:11,283 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:52:11,283 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:52:12,138 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:52:12,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973354187] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:52:12,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:52:12,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-12-02 08:52:12,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891228535] [2024-12-02 08:52:12,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:52:12,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-12-02 08:52:12,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:52:12,140 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-12-02 08:52:12,140 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2024-12-02 08:52:12,140 INFO L87 Difference]: Start difference. First operand 33889 states and 42168 transitions. Second operand has 21 states, 21 states have (on average 11.523809523809524) internal successors, (242), 20 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:52:14,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:52:14,026 INFO L93 Difference]: Finished difference Result 91111 states and 113770 transitions. [2024-12-02 08:52:14,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 08:52:14,026 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 11.523809523809524) internal successors, (242), 20 states have internal predecessors, (242), 0 states have call successors, (0), 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 105 [2024-12-02 08:52:14,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:52:14,067 INFO L225 Difference]: With dead ends: 91111 [2024-12-02 08:52:14,067 INFO L226 Difference]: Without dead ends: 60638 [2024-12-02 08:52:14,081 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=205, Invalid=607, Unknown=0, NotChecked=0, Total=812 [2024-12-02 08:52:14,081 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 973 mSDsluCounter, 798 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 973 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 08:52:14,081 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [973 Valid, 901 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 08:52:14,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60638 states. [2024-12-02 08:52:15,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60638 to 58150. [2024-12-02 08:52:15,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58150 states, 58149 states have (on average 1.2329188808062048) internal successors, (71693), 58149 states have internal predecessors, (71693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:52:15,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58150 states to 58150 states and 71693 transitions. [2024-12-02 08:52:15,893 INFO L78 Accepts]: Start accepts. Automaton has 58150 states and 71693 transitions. Word has length 105 [2024-12-02 08:52:15,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:52:15,893 INFO L471 AbstractCegarLoop]: Abstraction has 58150 states and 71693 transitions. [2024-12-02 08:52:15,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 11.523809523809524) internal successors, (242), 20 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:52:15,894 INFO L276 IsEmpty]: Start isEmpty. Operand 58150 states and 71693 transitions. [2024-12-02 08:52:15,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-12-02 08:52:15,894 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:52:15,894 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:52:15,901 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 08:52:16,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:52:16,095 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:52:16,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:52:16,095 INFO L85 PathProgramCache]: Analyzing trace with hash 532544966, now seen corresponding path program 1 times [2024-12-02 08:52:16,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:52:16,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846378532] [2024-12-02 08:52:16,096 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:52:16,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:52:16,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:52:16,739 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:52:16,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:52:16,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846378532] [2024-12-02 08:52:16,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846378532] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:52:16,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753905363] [2024-12-02 08:52:16,740 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:52:16,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:52:16,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:52:16,741 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:52:16,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 08:52:16,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:52:16,858 INFO L256 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-12-02 08:52:16,859 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:52:17,245 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:52:17,245 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:52:17,926 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:52:17,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753905363] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:52:17,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:52:17,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2024-12-02 08:52:17,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460167057] [2024-12-02 08:52:17,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:52:17,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-12-02 08:52:17,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:52:17,927 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-12-02 08:52:17,927 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=652, Unknown=0, NotChecked=0, Total=756 [2024-12-02 08:52:17,927 INFO L87 Difference]: Start difference. First operand 58150 states and 71693 transitions. Second operand has 28 states, 28 states have (on average 10.0) internal successors, (280), 27 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:52:23,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:52:23,512 INFO L93 Difference]: Finished difference Result 188404 states and 231877 transitions. [2024-12-02 08:52:23,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-12-02 08:52:23,513 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 10.0) internal successors, (280), 27 states have internal predecessors, (280), 0 states have call successors, (0), 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 106 [2024-12-02 08:52:23,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:52:23,619 INFO L225 Difference]: With dead ends: 188404 [2024-12-02 08:52:23,620 INFO L226 Difference]: Without dead ends: 134408 [2024-12-02 08:52:23,646 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 965 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=782, Invalid=3250, Unknown=0, NotChecked=0, Total=4032 [2024-12-02 08:52:23,647 INFO L435 NwaCegarLoop]: 129 mSDtfsCounter, 1540 mSDsluCounter, 1665 mSDsCounter, 0 mSdLazyCounter, 1807 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1540 SdHoareTripleChecker+Valid, 1794 SdHoareTripleChecker+Invalid, 1837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 08:52:23,647 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1540 Valid, 1794 Invalid, 1837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1807 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 08:52:23,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134408 states. [2024-12-02 08:52:27,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134408 to 108522. [2024-12-02 08:52:27,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108522 states, 108521 states have (on average 1.2221505515061601) internal successors, (132629), 108521 states have internal predecessors, (132629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:52:27,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108522 states to 108522 states and 132629 transitions. [2024-12-02 08:52:27,283 INFO L78 Accepts]: Start accepts. Automaton has 108522 states and 132629 transitions. Word has length 106 [2024-12-02 08:52:27,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:52:27,283 INFO L471 AbstractCegarLoop]: Abstraction has 108522 states and 132629 transitions. [2024-12-02 08:52:27,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 10.0) internal successors, (280), 27 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:52:27,283 INFO L276 IsEmpty]: Start isEmpty. Operand 108522 states and 132629 transitions. [2024-12-02 08:52:27,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-12-02 08:52:27,284 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:52:27,284 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:52:27,291 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 08:52:27,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:52:27,485 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:52:27,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:52:27,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1014823822, now seen corresponding path program 1 times [2024-12-02 08:52:27,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:52:27,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633774377] [2024-12-02 08:52:27,485 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:52:27,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:52:27,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:52:30,754 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:52:30,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:52:30,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633774377] [2024-12-02 08:52:30,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633774377] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:52:30,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74695752] [2024-12-02 08:52:30,755 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:52:30,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:52:30,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:52:30,756 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:52:30,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 08:52:30,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:52:30,890 INFO L256 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-12-02 08:52:30,891 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:52:31,789 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:52:31,789 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:52:32,997 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:52:32,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74695752] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:52:32,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:52:32,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 12, 12] total 48 [2024-12-02 08:52:32,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192606161] [2024-12-02 08:52:32,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:52:32,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-12-02 08:52:32,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:52:32,998 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-12-02 08:52:32,999 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=2116, Unknown=0, NotChecked=0, Total=2256 [2024-12-02 08:52:32,999 INFO L87 Difference]: Start difference. First operand 108522 states and 132629 transitions. Second operand has 48 states, 48 states have (on average 6.375) internal successors, (306), 48 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:53:37,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:53:37,275 INFO L93 Difference]: Finished difference Result 319809 states and 386279 transitions. [2024-12-02 08:53:37,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 260 states. [2024-12-02 08:53:37,276 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 6.375) internal successors, (306), 48 states have internal predecessors, (306), 0 states have call successors, (0), 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 107 [2024-12-02 08:53:37,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:53:37,497 INFO L225 Difference]: With dead ends: 319809 [2024-12-02 08:53:37,497 INFO L226 Difference]: Without dead ends: 281697 [2024-12-02 08:53:37,540 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 304 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35382 ImplicationChecksByTransitivity, 48.6s TimeCoverageRelationStatistics Valid=14632, Invalid=78698, Unknown=0, NotChecked=0, Total=93330 [2024-12-02 08:53:37,540 INFO L435 NwaCegarLoop]: 243 mSDtfsCounter, 6571 mSDsluCounter, 6523 mSDsCounter, 0 mSdLazyCounter, 10334 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6571 SdHoareTripleChecker+Valid, 6766 SdHoareTripleChecker+Invalid, 10522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 10334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2024-12-02 08:53:37,541 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6571 Valid, 6766 Invalid, 10522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 10334 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2024-12-02 08:53:37,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281697 states. [2024-12-02 08:53:42,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281697 to 105863. [2024-12-02 08:53:42,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105863 states, 105862 states have (on average 1.2199845081332301) internal successors, (129150), 105862 states have internal predecessors, (129150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:53:42,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105863 states to 105863 states and 129150 transitions. [2024-12-02 08:53:42,312 INFO L78 Accepts]: Start accepts. Automaton has 105863 states and 129150 transitions. Word has length 107 [2024-12-02 08:53:42,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:53:42,312 INFO L471 AbstractCegarLoop]: Abstraction has 105863 states and 129150 transitions. [2024-12-02 08:53:42,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 6.375) internal successors, (306), 48 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:53:42,313 INFO L276 IsEmpty]: Start isEmpty. Operand 105863 states and 129150 transitions. [2024-12-02 08:53:42,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-12-02 08:53:42,314 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:53:42,314 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:53:42,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-12-02 08:53:42,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:53:42,514 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:53:42,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:53:42,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1145211990, now seen corresponding path program 1 times [2024-12-02 08:53:42,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:53:42,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576684422] [2024-12-02 08:53:42,515 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:53:42,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:53:42,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:53:42,980 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:53:42,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:53:42,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576684422] [2024-12-02 08:53:42,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576684422] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:53:42,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592919795] [2024-12-02 08:53:42,981 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:53:42,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:53:42,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:53:42,983 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:53:42,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 08:53:43,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:53:43,122 INFO L256 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-12-02 08:53:43,124 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:53:43,815 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:53:43,815 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:53:45,085 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:53:45,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592919795] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:53:45,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:53:45,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 36 [2024-12-02 08:53:45,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533278859] [2024-12-02 08:53:45,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:53:45,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-12-02 08:53:45,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:53:45,087 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-12-02 08:53:45,087 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1142, Unknown=0, NotChecked=0, Total=1260 [2024-12-02 08:53:45,087 INFO L87 Difference]: Start difference. First operand 105863 states and 129150 transitions. Second operand has 36 states, 36 states have (on average 7.583333333333333) internal successors, (273), 36 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:54:05,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:54:05,473 INFO L93 Difference]: Finished difference Result 429082 states and 525276 transitions. [2024-12-02 08:54:05,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-12-02 08:54:05,474 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 7.583333333333333) internal successors, (273), 36 states have internal predecessors, (273), 0 states have call successors, (0), 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 108 [2024-12-02 08:54:05,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:54:05,778 INFO L225 Difference]: With dead ends: 429082 [2024-12-02 08:54:05,778 INFO L226 Difference]: Without dead ends: 368663 [2024-12-02 08:54:05,831 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3268 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=2345, Invalid=8575, Unknown=0, NotChecked=0, Total=10920 [2024-12-02 08:54:05,832 INFO L435 NwaCegarLoop]: 183 mSDtfsCounter, 5344 mSDsluCounter, 2377 mSDsCounter, 0 mSdLazyCounter, 2238 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5344 SdHoareTripleChecker+Valid, 2560 SdHoareTripleChecker+Invalid, 2305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 2238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-12-02 08:54:05,832 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5344 Valid, 2560 Invalid, 2305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 2238 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-12-02 08:54:05,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368663 states. [2024-12-02 08:54:12,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368663 to 124078. [2024-12-02 08:54:12,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124078 states, 124077 states have (on average 1.2157370020229374) internal successors, (150845), 124077 states have internal predecessors, (150845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:54:12,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124078 states to 124078 states and 150845 transitions. [2024-12-02 08:54:12,789 INFO L78 Accepts]: Start accepts. Automaton has 124078 states and 150845 transitions. Word has length 108 [2024-12-02 08:54:12,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:54:12,789 INFO L471 AbstractCegarLoop]: Abstraction has 124078 states and 150845 transitions. [2024-12-02 08:54:12,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 7.583333333333333) internal successors, (273), 36 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:54:12,789 INFO L276 IsEmpty]: Start isEmpty. Operand 124078 states and 150845 transitions. [2024-12-02 08:54:12,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-12-02 08:54:12,800 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:54:12,801 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:54:12,806 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 08:54:13,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:54:13,001 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:54:13,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:54:13,002 INFO L85 PathProgramCache]: Analyzing trace with hash -248896628, now seen corresponding path program 1 times [2024-12-02 08:54:13,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:54:13,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748486877] [2024-12-02 08:54:13,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:54:13,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:54:13,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:54:13,772 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 58 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:54:13,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:54:13,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748486877] [2024-12-02 08:54:13,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748486877] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:54:13,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214960875] [2024-12-02 08:54:13,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:54:13,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:54:13,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:54:13,774 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:54:13,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 08:54:13,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:54:13,997 INFO L256 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-12-02 08:54:13,999 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:54:14,871 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 31 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:54:14,871 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:54:17,557 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 24 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:54:17,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214960875] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:54:17,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:54:17,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 35 [2024-12-02 08:54:17,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599902429] [2024-12-02 08:54:17,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:54:17,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-12-02 08:54:17,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:54:17,558 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-12-02 08:54:17,559 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1138, Unknown=0, NotChecked=0, Total=1260 [2024-12-02 08:54:17,559 INFO L87 Difference]: Start difference. First operand 124078 states and 150845 transitions. Second operand has 36 states, 36 states have (on average 13.11111111111111) internal successors, (472), 35 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:54:38,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:54:38,876 INFO L93 Difference]: Finished difference Result 393691 states and 479437 transitions. [2024-12-02 08:54:38,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2024-12-02 08:54:38,877 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 13.11111111111111) internal successors, (472), 35 states have internal predecessors, (472), 0 states have call successors, (0), 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 165 [2024-12-02 08:54:38,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:54:39,114 INFO L225 Difference]: With dead ends: 393691 [2024-12-02 08:54:39,114 INFO L226 Difference]: Without dead ends: 291679 [2024-12-02 08:54:39,166 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7668 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=3845, Invalid=20647, Unknown=0, NotChecked=0, Total=24492 [2024-12-02 08:54:39,166 INFO L435 NwaCegarLoop]: 159 mSDtfsCounter, 4136 mSDsluCounter, 2714 mSDsCounter, 0 mSdLazyCounter, 3025 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4136 SdHoareTripleChecker+Valid, 2873 SdHoareTripleChecker+Invalid, 3116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 3025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-12-02 08:54:39,167 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4136 Valid, 2873 Invalid, 3116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 3025 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-12-02 08:54:39,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291679 states. [2024-12-02 08:54:47,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291679 to 150886. [2024-12-02 08:54:47,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150886 states, 150885 states have (on average 1.2056599396891672) internal successors, (181916), 150885 states have internal predecessors, (181916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:54:47,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150886 states to 150886 states and 181916 transitions. [2024-12-02 08:54:47,355 INFO L78 Accepts]: Start accepts. Automaton has 150886 states and 181916 transitions. Word has length 165 [2024-12-02 08:54:47,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:54:47,356 INFO L471 AbstractCegarLoop]: Abstraction has 150886 states and 181916 transitions. [2024-12-02 08:54:47,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 13.11111111111111) internal successors, (472), 35 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:54:47,356 INFO L276 IsEmpty]: Start isEmpty. Operand 150886 states and 181916 transitions. [2024-12-02 08:54:47,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-12-02 08:54:47,366 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:54:47,366 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:54:47,372 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 08:54:47,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-12-02 08:54:47,566 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:54:47,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:54:47,567 INFO L85 PathProgramCache]: Analyzing trace with hash 2089838628, now seen corresponding path program 1 times [2024-12-02 08:54:47,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:54:47,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835132869] [2024-12-02 08:54:47,567 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:54:47,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:54:47,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:54:48,395 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 41 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:54:48,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:54:48,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835132869] [2024-12-02 08:54:48,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835132869] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:54:48,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328985020] [2024-12-02 08:54:48,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:54:48,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:54:48,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:54:48,397 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:54:48,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 08:54:48,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:54:48,566 INFO L256 TraceCheckSpWp]: Trace formula consists of 695 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-12-02 08:54:48,569 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:54:51,342 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 58 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:54:51,342 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:54:57,922 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 33 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:54:57,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328985020] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:54:57,923 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:54:57,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 24, 24] total 57 [2024-12-02 08:54:57,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074306050] [2024-12-02 08:54:57,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:54:57,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-12-02 08:54:57,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:54:57,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-12-02 08:54:57,924 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=333, Invalid=2859, Unknown=0, NotChecked=0, Total=3192 [2024-12-02 08:54:57,924 INFO L87 Difference]: Start difference. First operand 150886 states and 181916 transitions. Second operand has 57 states, 57 states have (on average 8.017543859649123) internal successors, (457), 57 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:56:39,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:56:39,512 INFO L93 Difference]: Finished difference Result 470538 states and 572385 transitions. [2024-12-02 08:56:39,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 307 states. [2024-12-02 08:56:39,513 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 8.017543859649123) internal successors, (457), 57 states have internal predecessors, (457), 0 states have call successors, (0), 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 166 [2024-12-02 08:56:39,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:56:39,826 INFO L225 Difference]: With dead ends: 470538 [2024-12-02 08:56:39,826 INFO L226 Difference]: Without dead ends: 344590 [2024-12-02 08:56:39,887 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 648 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 360 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50460 ImplicationChecksByTransitivity, 81.7s TimeCoverageRelationStatistics Valid=17573, Invalid=113109, Unknown=0, NotChecked=0, Total=130682 [2024-12-02 08:56:39,887 INFO L435 NwaCegarLoop]: 174 mSDtfsCounter, 13302 mSDsluCounter, 4290 mSDsCounter, 0 mSdLazyCounter, 5608 mSolverCounterSat, 513 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13302 SdHoareTripleChecker+Valid, 4464 SdHoareTripleChecker+Invalid, 6121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 513 IncrementalHoareTripleChecker+Valid, 5608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-12-02 08:56:39,887 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13302 Valid, 4464 Invalid, 6121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [513 Valid, 5608 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2024-12-02 08:56:40,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344590 states. [2024-12-02 08:56:55,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344590 to 261675. [2024-12-02 08:56:55,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261675 states, 261674 states have (on average 1.2065088621720155) internal successors, (315712), 261674 states have internal predecessors, (315712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:56:55,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261675 states to 261675 states and 315712 transitions. [2024-12-02 08:56:55,756 INFO L78 Accepts]: Start accepts. Automaton has 261675 states and 315712 transitions. Word has length 166 [2024-12-02 08:56:55,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:56:55,757 INFO L471 AbstractCegarLoop]: Abstraction has 261675 states and 315712 transitions. [2024-12-02 08:56:55,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 8.017543859649123) internal successors, (457), 57 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:56:55,757 INFO L276 IsEmpty]: Start isEmpty. Operand 261675 states and 315712 transitions. [2024-12-02 08:56:55,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-12-02 08:56:55,768 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:56:55,768 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:56:55,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-12-02 08:56:55,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:56:55,968 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:56:55,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:56:55,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1700761332, now seen corresponding path program 1 times [2024-12-02 08:56:55,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:56:55,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794667855] [2024-12-02 08:56:55,969 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:56:55,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:56:56,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:56:56,616 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 16 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:56:56,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:56:56,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794667855] [2024-12-02 08:56:56,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794667855] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:56:56,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420871971] [2024-12-02 08:56:56,617 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:56:56,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:56:56,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:56:56,618 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:56:56,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 08:56:56,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:56:56,771 INFO L256 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-12-02 08:56:56,773 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:56:57,747 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 38 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:56:57,747 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:56:59,813 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 33 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:56:59,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420871971] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:56:59,813 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:56:59,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 34 [2024-12-02 08:56:59,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344117035] [2024-12-02 08:56:59,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:56:59,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-12-02 08:56:59,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:56:59,815 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-12-02 08:56:59,815 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1075, Unknown=0, NotChecked=0, Total=1190 [2024-12-02 08:56:59,815 INFO L87 Difference]: Start difference. First operand 261675 states and 315712 transitions. Second operand has 35 states, 35 states have (on average 13.685714285714285) internal successors, (479), 34 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:57:50,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:57:50,195 INFO L93 Difference]: Finished difference Result 857924 states and 1039583 transitions. [2024-12-02 08:57:50,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2024-12-02 08:57:50,195 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 13.685714285714285) internal successors, (479), 34 states have internal predecessors, (479), 0 states have call successors, (0), 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 168 [2024-12-02 08:57:50,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:57:50,946 INFO L225 Difference]: With dead ends: 857924 [2024-12-02 08:57:50,947 INFO L226 Difference]: Without dead ends: 640622 [2024-12-02 08:57:51,031 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9032 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=4226, Invalid=23496, Unknown=0, NotChecked=0, Total=27722 [2024-12-02 08:57:51,032 INFO L435 NwaCegarLoop]: 164 mSDtfsCounter, 3850 mSDsluCounter, 2547 mSDsCounter, 0 mSdLazyCounter, 2965 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3850 SdHoareTripleChecker+Valid, 2711 SdHoareTripleChecker+Invalid, 3038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 2965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:57:51,032 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3850 Valid, 2711 Invalid, 3038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 2965 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-12-02 08:57:51,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640622 states. [2024-12-02 08:58:15,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640622 to 307762. [2024-12-02 08:58:16,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307762 states, 307761 states have (on average 1.1874668980150183) internal successors, (365456), 307761 states have internal predecessors, (365456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:58:16,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307762 states to 307762 states and 365456 transitions. [2024-12-02 08:58:16,383 INFO L78 Accepts]: Start accepts. Automaton has 307762 states and 365456 transitions. Word has length 168 [2024-12-02 08:58:16,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:58:16,383 INFO L471 AbstractCegarLoop]: Abstraction has 307762 states and 365456 transitions. [2024-12-02 08:58:16,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 13.685714285714285) internal successors, (479), 34 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:58:16,383 INFO L276 IsEmpty]: Start isEmpty. Operand 307762 states and 365456 transitions. [2024-12-02 08:58:16,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-12-02 08:58:16,394 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:58:16,394 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:58:16,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-12-02 08:58:16,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-12-02 08:58:16,594 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:58:16,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:58:16,595 INFO L85 PathProgramCache]: Analyzing trace with hash -550811284, now seen corresponding path program 1 times [2024-12-02 08:58:16,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:58:16,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437260145] [2024-12-02 08:58:16,595 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:58:16,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:58:16,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:58:20,508 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 16 proven. 122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:58:20,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:58:20,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437260145] [2024-12-02 08:58:20,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437260145] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:58:20,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006704940] [2024-12-02 08:58:20,508 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:58:20,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:58:20,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:58:20,510 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:58:20,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6820d7ae-2d52-4222-9c36-2fd3061204a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 08:58:20,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:58:20,687 INFO L256 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-12-02 08:58:20,689 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:58:23,717 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 16 proven. 122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:58:23,717 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:58:28,186 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 16 proven. 122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:58:28,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006704940] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:58:28,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:58:28,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 18, 18] total 69 [2024-12-02 08:58:28,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129687204] [2024-12-02 08:58:28,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:58:28,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-12-02 08:58:28,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:58:28,188 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-12-02 08:58:28,188 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=4426, Unknown=0, NotChecked=0, Total=4692 [2024-12-02 08:58:28,189 INFO L87 Difference]: Start difference. First operand 307762 states and 365456 transitions. Second operand has 69 states, 69 states have (on average 7.130434782608695) internal successors, (492), 69 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)