./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label04.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_4e441bbb-86a3-4b8a-86d0-94c376c3e7e6/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e441bbb-86a3-4b8a-86d0-94c376c3e7e6/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e441bbb-86a3-4b8a-86d0-94c376c3e7e6/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e441bbb-86a3-4b8a-86d0-94c376c3e7e6/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label04.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e441bbb-86a3-4b8a-86d0-94c376c3e7e6/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e441bbb-86a3-4b8a-86d0-94c376c3e7e6/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4fa6729695cae933208e9cd0cb2193db5a830deb3d010a9b31d9c8d14c52da9e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:19:40,577 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:19:40,671 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e441bbb-86a3-4b8a-86d0-94c376c3e7e6/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 20:19:40,685 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:19:40,685 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:19:40,730 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:19:40,731 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:19:40,731 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:19:40,732 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:19:40,732 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:19:40,732 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:19:40,733 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:19:40,733 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:19:40,733 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:19:40,733 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:19:40,734 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:19:40,734 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:19:40,734 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:19:40,734 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:19:40,734 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:19:40,735 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:19:40,735 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:19:40,735 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:19:40,735 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:19:40,735 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:19:40,735 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:19:40,736 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:19:40,736 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:19:40,736 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:19:40,736 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:19:40,736 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:19:40,737 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:19:40,737 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:19:40,737 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:19:40,737 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:19:40,737 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:19:40,738 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:19:40,738 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:19:40,738 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:19:40,738 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:19:40,738 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:19:40,738 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:19:40,739 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:19:40,739 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:19:40,739 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:19:40,739 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:19:40,739 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:19:40,740 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:19:40,740 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_4e441bbb-86a3-4b8a-86d0-94c376c3e7e6/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4fa6729695cae933208e9cd0cb2193db5a830deb3d010a9b31d9c8d14c52da9e [2024-11-27 20:19:41,120 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:19:41,132 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:19:41,136 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:19:41,138 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:19:41,138 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:19:41,141 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e441bbb-86a3-4b8a-86d0-94c376c3e7e6/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label04.c [2024-11-27 20:19:44,850 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e441bbb-86a3-4b8a-86d0-94c376c3e7e6/bin/uautomizer-verify-aQ6SnzHsRB/data/46c848cfc/f8a588fbab6849078442e3fcd72966dc/FLAG5648ce5ef [2024-11-27 20:19:45,859 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:19:45,860 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e441bbb-86a3-4b8a-86d0-94c376c3e7e6/sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label04.c [2024-11-27 20:19:45,921 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e441bbb-86a3-4b8a-86d0-94c376c3e7e6/bin/uautomizer-verify-aQ6SnzHsRB/data/46c848cfc/f8a588fbab6849078442e3fcd72966dc/FLAG5648ce5ef [2024-11-27 20:19:45,953 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e441bbb-86a3-4b8a-86d0-94c376c3e7e6/bin/uautomizer-verify-aQ6SnzHsRB/data/46c848cfc/f8a588fbab6849078442e3fcd72966dc [2024-11-27 20:19:45,957 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:19:45,960 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:19:45,962 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:19:45,963 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:19:45,970 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:19:45,971 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:19:45" (1/1) ... [2024-11-27 20:19:45,972 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55fc6545 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:19:45, skipping insertion in model container [2024-11-27 20:19:45,975 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:19:45" (1/1) ... [2024-11-27 20:19:46,156 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:19:46,627 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_4e441bbb-86a3-4b8a-86d0-94c376c3e7e6/sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label04.c[8712,8725] [2024-11-27 20:19:46,750 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_4e441bbb-86a3-4b8a-86d0-94c376c3e7e6/sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label04.c[15773,15786] [2024-11-27 20:19:47,839 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:19:47,856 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:19:47,917 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_4e441bbb-86a3-4b8a-86d0-94c376c3e7e6/sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label04.c[8712,8725] [2024-11-27 20:19:47,942 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_4e441bbb-86a3-4b8a-86d0-94c376c3e7e6/sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label04.c[15773,15786] [2024-11-27 20:19:48,681 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:19:48,726 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:19:48,728 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:19:48 WrapperNode [2024-11-27 20:19:48,728 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:19:48,729 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:19:48,730 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:19:48,730 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:19:48,742 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:19:48" (1/1) ... [2024-11-27 20:19:48,828 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:19:48" (1/1) ... [2024-11-27 20:19:49,279 INFO L138 Inliner]: procedures = 36, calls = 21, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 5037 [2024-11-27 20:19:49,280 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:19:49,281 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:19:49,281 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:19:49,282 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:19:49,293 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:19:48" (1/1) ... [2024-11-27 20:19:49,294 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:19:48" (1/1) ... [2024-11-27 20:19:49,365 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:19:48" (1/1) ... [2024-11-27 20:19:49,695 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-27 20:19:49,695 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:19:48" (1/1) ... [2024-11-27 20:19:49,695 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:19:48" (1/1) ... [2024-11-27 20:19:49,849 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:19:48" (1/1) ... [2024-11-27 20:19:49,869 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:19:48" (1/1) ... [2024-11-27 20:19:49,910 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:19:48" (1/1) ... [2024-11-27 20:19:49,971 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:19:48" (1/1) ... [2024-11-27 20:19:49,991 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:19:48" (1/1) ... [2024-11-27 20:19:50,124 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:19:50,127 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:19:50,127 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:19:50,127 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:19:50,128 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:19:48" (1/1) ... [2024-11-27 20:19:50,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:19:50,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e441bbb-86a3-4b8a-86d0-94c376c3e7e6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:19:50,170 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e441bbb-86a3-4b8a-86d0-94c376c3e7e6/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:19:50,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e441bbb-86a3-4b8a-86d0-94c376c3e7e6/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:19:50,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:19:50,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:19:50,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:19:50,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:19:50,345 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:19:50,347 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:19:57,690 INFO L? ?]: Removed 739 outVars from TransFormulas that were not future-live. [2024-11-27 20:19:57,690 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:19:57,738 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:19:57,738 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-27 20:19:57,738 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:19:57 BoogieIcfgContainer [2024-11-27 20:19:57,738 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:19:57,746 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:19:57,746 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:19:57,750 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:19:57,750 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:19:45" (1/3) ... [2024-11-27 20:19:57,751 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40643609 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:19:57, skipping insertion in model container [2024-11-27 20:19:57,751 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:19:48" (2/3) ... [2024-11-27 20:19:57,751 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40643609 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:19:57, skipping insertion in model container [2024-11-27 20:19:57,751 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:19:57" (3/3) ... [2024-11-27 20:19:57,753 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label04.c [2024-11-27 20:19:57,767 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:19:57,769 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label04.c that has 1 procedures, 887 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-11-27 20:19:57,861 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:19:57,876 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;@5179a39a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:19:57,877 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-27 20:19:57,886 INFO L276 IsEmpty]: Start isEmpty. Operand has 887 states, 884 states have (on average 1.9049773755656108) internal successors, (1684), 886 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:19:57,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-27 20:19:57,894 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:19:57,895 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] [2024-11-27 20:19:57,895 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:19:57,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:19:57,901 INFO L85 PathProgramCache]: Analyzing trace with hash 593970293, now seen corresponding path program 1 times [2024-11-27 20:19:57,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:19:57,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183108464] [2024-11-27 20:19:57,910 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:19:57,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:19:58,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:19:58,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:19:58,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:19:58,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183108464] [2024-11-27 20:19:58,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183108464] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:19:58,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:19:58,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:19:58,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398481143] [2024-11-27 20:19:58,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:19:58,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 20:19:58,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:19:58,205 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 20:19:58,205 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 20:19:58,211 INFO L87 Difference]: Start difference. First operand has 887 states, 884 states have (on average 1.9049773755656108) internal successors, (1684), 886 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:19:58,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:19:58,316 INFO L93 Difference]: Finished difference Result 1743 states and 3312 transitions. [2024-11-27 20:19:58,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 20:19:58,318 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-27 20:19:58,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:19:58,332 INFO L225 Difference]: With dead ends: 1743 [2024-11-27 20:19:58,333 INFO L226 Difference]: Without dead ends: 821 [2024-11-27 20:19:58,338 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 20:19:58,341 INFO L435 NwaCegarLoop]: 1615 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, 1615 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:19:58,341 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1615 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:19:58,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2024-11-27 20:19:58,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 821. [2024-11-27 20:19:58,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 819 states have (on average 1.8937728937728937) internal successors, (1551), 820 states have internal predecessors, (1551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:19:58,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1551 transitions. [2024-11-27 20:19:58,439 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1551 transitions. Word has length 22 [2024-11-27 20:19:58,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:19:58,439 INFO L471 AbstractCegarLoop]: Abstraction has 821 states and 1551 transitions. [2024-11-27 20:19:58,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:19:58,441 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1551 transitions. [2024-11-27 20:19:58,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-27 20:19:58,443 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:19:58,443 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] [2024-11-27 20:19:58,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 20:19:58,444 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:19:58,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:19:58,444 INFO L85 PathProgramCache]: Analyzing trace with hash -427098061, now seen corresponding path program 1 times [2024-11-27 20:19:58,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:19:58,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181972860] [2024-11-27 20:19:58,445 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:19:58,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:19:58,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:19:58,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:19:58,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:19:58,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181972860] [2024-11-27 20:19:58,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181972860] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:19:58,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:19:58,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:19:58,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992179718] [2024-11-27 20:19:58,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:19:58,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:19:58,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:19:58,805 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:19:58,806 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:19:58,806 INFO L87 Difference]: Start difference. First operand 821 states and 1551 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:19:58,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:19:58,959 INFO L93 Difference]: Finished difference Result 863 states and 1615 transitions. [2024-11-27 20:19:58,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:19:58,960 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-27 20:19:58,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:19:58,966 INFO L225 Difference]: With dead ends: 863 [2024-11-27 20:19:58,966 INFO L226 Difference]: Without dead ends: 821 [2024-11-27 20:19:58,968 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:19:58,970 INFO L435 NwaCegarLoop]: 1549 mSDtfsCounter, 0 mSDsluCounter, 4619 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6168 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:19:58,970 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6168 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:19:58,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2024-11-27 20:19:58,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 821. [2024-11-27 20:19:58,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 819 states have (on average 1.8656898656898657) internal successors, (1528), 820 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:19:59,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1528 transitions. [2024-11-27 20:19:59,005 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1528 transitions. Word has length 22 [2024-11-27 20:19:59,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:19:59,006 INFO L471 AbstractCegarLoop]: Abstraction has 821 states and 1528 transitions. [2024-11-27 20:19:59,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:19:59,006 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1528 transitions. [2024-11-27 20:19:59,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-27 20:19:59,009 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:19:59,009 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] [2024-11-27 20:19:59,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 20:19:59,009 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:19:59,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:19:59,010 INFO L85 PathProgramCache]: Analyzing trace with hash 3301806, now seen corresponding path program 1 times [2024-11-27 20:19:59,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:19:59,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882290359] [2024-11-27 20:19:59,010 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:19:59,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:19:59,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:19:59,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:19:59,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:19:59,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882290359] [2024-11-27 20:19:59,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882290359] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:19:59,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:19:59,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:19:59,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982731272] [2024-11-27 20:19:59,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:19:59,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:19:59,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:19:59,315 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:19:59,316 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:19:59,316 INFO L87 Difference]: Start difference. First operand 821 states and 1528 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:19:59,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:19:59,579 INFO L93 Difference]: Finished difference Result 1125 states and 2008 transitions. [2024-11-27 20:19:59,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:19:59,581 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-11-27 20:19:59,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:19:59,588 INFO L225 Difference]: With dead ends: 1125 [2024-11-27 20:19:59,589 INFO L226 Difference]: Without dead ends: 1087 [2024-11-27 20:19:59,590 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-27 20:19:59,591 INFO L435 NwaCegarLoop]: 1522 mSDtfsCounter, 6285 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6285 SdHoareTripleChecker+Valid, 2135 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:19:59,592 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6285 Valid, 2135 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:19:59,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2024-11-27 20:19:59,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 857. [2024-11-27 20:19:59,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 857 states, 855 states have (on average 1.8538011695906433) internal successors, (1585), 856 states have internal predecessors, (1585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:19:59,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 1585 transitions. [2024-11-27 20:19:59,625 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 1585 transitions. Word has length 44 [2024-11-27 20:19:59,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:19:59,625 INFO L471 AbstractCegarLoop]: Abstraction has 857 states and 1585 transitions. [2024-11-27 20:19:59,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:19:59,626 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 1585 transitions. [2024-11-27 20:19:59,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-27 20:19:59,630 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:19:59,630 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] [2024-11-27 20:19:59,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 20:19:59,630 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:19:59,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:19:59,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1757336638, now seen corresponding path program 1 times [2024-11-27 20:19:59,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:19:59,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764195264] [2024-11-27 20:19:59,631 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:19:59,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:19:59,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:19:59,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:19:59,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:19:59,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764195264] [2024-11-27 20:19:59,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764195264] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:19:59,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:19:59,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:19:59,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438471674] [2024-11-27 20:19:59,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:19:59,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:19:59,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:19:59,809 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:19:59,809 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:19:59,809 INFO L87 Difference]: Start difference. First operand 857 states and 1585 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:19:59,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:19:59,866 INFO L93 Difference]: Finished difference Result 994 states and 1800 transitions. [2024-11-27 20:19:59,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:19:59,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2024-11-27 20:19:59,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:19:59,871 INFO L225 Difference]: With dead ends: 994 [2024-11-27 20:19:59,871 INFO L226 Difference]: Without dead ends: 920 [2024-11-27 20:19:59,874 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:19:59,875 INFO L435 NwaCegarLoop]: 1524 mSDtfsCounter, 1476 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 1577 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:19:59,877 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 1577 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:19:59,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2024-11-27 20:19:59,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 916. [2024-11-27 20:19:59,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 914 states have (on average 1.8326039387308535) internal successors, (1675), 915 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:19:59,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1675 transitions. [2024-11-27 20:19:59,918 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1675 transitions. Word has length 46 [2024-11-27 20:19:59,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:19:59,919 INFO L471 AbstractCegarLoop]: Abstraction has 916 states and 1675 transitions. [2024-11-27 20:19:59,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:19:59,919 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1675 transitions. [2024-11-27 20:19:59,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-27 20:19:59,922 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:19:59,922 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] [2024-11-27 20:19:59,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 20:19:59,922 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:19:59,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:19:59,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1823830150, now seen corresponding path program 1 times [2024-11-27 20:19:59,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:19:59,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731006582] [2024-11-27 20:19:59,924 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:19:59,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:19:59,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:20:00,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:20:00,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:20:00,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731006582] [2024-11-27 20:20:00,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731006582] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:20:00,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:20:00,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:20:00,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684523698] [2024-11-27 20:20:00,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:20:00,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:20:00,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:20:00,275 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:20:00,276 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:20:00,276 INFO L87 Difference]: Start difference. First operand 916 states and 1675 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:20:00,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:20:00,469 INFO L93 Difference]: Finished difference Result 1051 states and 1883 transitions. [2024-11-27 20:20:00,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:20:00,470 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2024-11-27 20:20:00,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:20:00,476 INFO L225 Difference]: With dead ends: 1051 [2024-11-27 20:20:00,476 INFO L226 Difference]: Without dead ends: 918 [2024-11-27 20:20:00,477 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:20:00,479 INFO L435 NwaCegarLoop]: 1522 mSDtfsCounter, 1493 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1493 SdHoareTripleChecker+Valid, 1748 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:20:00,480 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1493 Valid, 1748 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:20:00,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2024-11-27 20:20:00,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 916. [2024-11-27 20:20:00,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 914 states have (on average 1.8304157549234135) internal successors, (1673), 915 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:20:00,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1673 transitions. [2024-11-27 20:20:00,517 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1673 transitions. Word has length 46 [2024-11-27 20:20:00,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:20:00,517 INFO L471 AbstractCegarLoop]: Abstraction has 916 states and 1673 transitions. [2024-11-27 20:20:00,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:20:00,518 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1673 transitions. [2024-11-27 20:20:00,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-27 20:20:00,519 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:20:00,519 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] [2024-11-27 20:20:00,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 20:20:00,519 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:20:00,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:20:00,520 INFO L85 PathProgramCache]: Analyzing trace with hash 289436656, now seen corresponding path program 1 times [2024-11-27 20:20:00,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:20:00,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996774102] [2024-11-27 20:20:00,520 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:20:00,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:20:00,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:20:00,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:20:00,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:20:00,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996774102] [2024-11-27 20:20:00,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996774102] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:20:00,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:20:00,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:20:00,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36596312] [2024-11-27 20:20:00,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:20:00,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:20:00,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:20:00,878 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:20:00,878 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:20:00,878 INFO L87 Difference]: Start difference. First operand 916 states and 1673 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:20:00,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:20:00,968 INFO L93 Difference]: Finished difference Result 924 states and 1682 transitions. [2024-11-27 20:20:00,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:20:00,969 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-27 20:20:00,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:20:00,975 INFO L225 Difference]: With dead ends: 924 [2024-11-27 20:20:00,978 INFO L226 Difference]: Without dead ends: 922 [2024-11-27 20:20:00,979 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:20:00,980 INFO L435 NwaCegarLoop]: 1525 mSDtfsCounter, 0 mSDsluCounter, 4566 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6091 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:20:00,981 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6091 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:20:00,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2024-11-27 20:20:01,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 922. [2024-11-27 20:20:01,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 922 states, 920 states have (on average 1.8239130434782609) internal successors, (1678), 921 states have internal predecessors, (1678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:20:01,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 1678 transitions. [2024-11-27 20:20:01,027 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 1678 transitions. Word has length 47 [2024-11-27 20:20:01,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:20:01,028 INFO L471 AbstractCegarLoop]: Abstraction has 922 states and 1678 transitions. [2024-11-27 20:20:01,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:20:01,029 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 1678 transitions. [2024-11-27 20:20:01,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-27 20:20:01,031 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:20:01,031 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] [2024-11-27 20:20:01,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 20:20:01,032 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:20:01,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:20:01,033 INFO L85 PathProgramCache]: Analyzing trace with hash -2036800602, now seen corresponding path program 1 times [2024-11-27 20:20:01,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:20:01,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601271066] [2024-11-27 20:20:01,033 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:20:01,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:20:01,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:20:01,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:20:01,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:20:01,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601271066] [2024-11-27 20:20:01,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601271066] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:20:01,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:20:01,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:20:01,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463854939] [2024-11-27 20:20:01,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:20:01,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:20:01,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:20:01,182 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:20:01,182 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:20:01,183 INFO L87 Difference]: Start difference. First operand 922 states and 1678 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:20:01,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:20:01,247 INFO L93 Difference]: Finished difference Result 1184 states and 2070 transitions. [2024-11-27 20:20:01,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:20:01,247 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-11-27 20:20:01,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:20:01,254 INFO L225 Difference]: With dead ends: 1184 [2024-11-27 20:20:01,254 INFO L226 Difference]: Without dead ends: 1045 [2024-11-27 20:20:01,255 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:20:01,256 INFO L435 NwaCegarLoop]: 1565 mSDtfsCounter, 1487 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1487 SdHoareTripleChecker+Valid, 1630 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:20:01,257 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1487 Valid, 1630 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:20:01,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2024-11-27 20:20:01,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 1043. [2024-11-27 20:20:01,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1043 states, 1041 states have (on average 1.781940441882805) internal successors, (1855), 1042 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:20:01,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1855 transitions. [2024-11-27 20:20:01,308 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1855 transitions. Word has length 48 [2024-11-27 20:20:01,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:20:01,309 INFO L471 AbstractCegarLoop]: Abstraction has 1043 states and 1855 transitions. [2024-11-27 20:20:01,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:20:01,309 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1855 transitions. [2024-11-27 20:20:01,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-27 20:20:01,310 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:20:01,311 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] [2024-11-27 20:20:01,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 20:20:01,312 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:20:01,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:20:01,312 INFO L85 PathProgramCache]: Analyzing trace with hash 42697894, now seen corresponding path program 1 times [2024-11-27 20:20:01,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:20:01,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267662489] [2024-11-27 20:20:01,313 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:20:01,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:20:01,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:20:01,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:20:01,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:20:01,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267662489] [2024-11-27 20:20:01,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267662489] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:20:01,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:20:01,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:20:01,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643508618] [2024-11-27 20:20:01,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:20:01,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:20:01,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:20:01,442 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:20:01,442 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:20:01,442 INFO L87 Difference]: Start difference. First operand 1043 states and 1855 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:20:01,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:20:01,510 INFO L93 Difference]: Finished difference Result 1531 states and 2573 transitions. [2024-11-27 20:20:01,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:20:01,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-11-27 20:20:01,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:20:01,519 INFO L225 Difference]: With dead ends: 1531 [2024-11-27 20:20:01,520 INFO L226 Difference]: Without dead ends: 1271 [2024-11-27 20:20:01,521 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:20:01,521 INFO L435 NwaCegarLoop]: 1563 mSDtfsCounter, 1485 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 1632 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:20:01,522 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1485 Valid, 1632 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:20:01,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1271 states. [2024-11-27 20:20:01,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1271 to 1269. [2024-11-27 20:20:01,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1269 states, 1267 states have (on average 1.718232044198895) internal successors, (2177), 1268 states have internal predecessors, (2177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:20:01,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 2177 transitions. [2024-11-27 20:20:01,587 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 2177 transitions. Word has length 48 [2024-11-27 20:20:01,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:20:01,588 INFO L471 AbstractCegarLoop]: Abstraction has 1269 states and 2177 transitions. [2024-11-27 20:20:01,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:20:01,588 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 2177 transitions. [2024-11-27 20:20:01,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-27 20:20:01,589 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:20:01,589 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] [2024-11-27 20:20:01,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 20:20:01,590 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:20:01,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:20:01,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1823630758, now seen corresponding path program 1 times [2024-11-27 20:20:01,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:20:01,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633619691] [2024-11-27 20:20:01,592 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:20:01,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:20:01,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:20:01,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:20:01,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:20:01,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633619691] [2024-11-27 20:20:01,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633619691] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:20:01,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:20:01,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:20:01,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860295096] [2024-11-27 20:20:01,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:20:01,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:20:01,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:20:01,708 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:20:01,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:20:01,708 INFO L87 Difference]: Start difference. First operand 1269 states and 2177 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:20:01,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:20:01,791 INFO L93 Difference]: Finished difference Result 2177 states and 3483 transitions. [2024-11-27 20:20:01,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:20:01,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-11-27 20:20:01,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:20:01,801 INFO L225 Difference]: With dead ends: 2177 [2024-11-27 20:20:01,801 INFO L226 Difference]: Without dead ends: 1691 [2024-11-27 20:20:01,802 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:20:01,803 INFO L435 NwaCegarLoop]: 1561 mSDtfsCounter, 1483 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1483 SdHoareTripleChecker+Valid, 1634 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:20:01,804 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1483 Valid, 1634 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:20:01,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1691 states. [2024-11-27 20:20:01,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1691 to 1689. [2024-11-27 20:20:01,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1689 states, 1687 states have (on average 1.6342620035566093) internal successors, (2757), 1688 states have internal predecessors, (2757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:20:01,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1689 states to 1689 states and 2757 transitions. [2024-11-27 20:20:01,890 INFO L78 Accepts]: Start accepts. Automaton has 1689 states and 2757 transitions. Word has length 48 [2024-11-27 20:20:01,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:20:01,891 INFO L471 AbstractCegarLoop]: Abstraction has 1689 states and 2757 transitions. [2024-11-27 20:20:01,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:20:01,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1689 states and 2757 transitions. [2024-11-27 20:20:01,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-27 20:20:01,892 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:20:01,892 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] [2024-11-27 20:20:01,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-27 20:20:01,893 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:20:01,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:20:01,895 INFO L85 PathProgramCache]: Analyzing trace with hash 246335073, now seen corresponding path program 1 times [2024-11-27 20:20:01,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:20:01,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693630790] [2024-11-27 20:20:01,895 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:20:01,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:20:01,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:20:02,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:20:02,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:20:02,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693630790] [2024-11-27 20:20:02,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693630790] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:20:02,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:20:02,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:20:02,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735466609] [2024-11-27 20:20:02,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:20:02,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:20:02,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:20:02,012 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:20:02,012 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:20:02,013 INFO L87 Difference]: Start difference. First operand 1689 states and 2757 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:20:02,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:20:02,097 INFO L93 Difference]: Finished difference Result 2656 states and 4155 transitions. [2024-11-27 20:20:02,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:20:02,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2024-11-27 20:20:02,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:20:02,108 INFO L225 Difference]: With dead ends: 2656 [2024-11-27 20:20:02,108 INFO L226 Difference]: Without dead ends: 2125 [2024-11-27 20:20:02,111 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:20:02,113 INFO L435 NwaCegarLoop]: 1570 mSDtfsCounter, 1486 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:20:02,113 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 1631 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:20:02,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2125 states. [2024-11-27 20:20:02,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2125 to 2123. [2024-11-27 20:20:02,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2123 states, 2121 states have (on average 1.5836869401225837) internal successors, (3359), 2122 states have internal predecessors, (3359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:20:02,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2123 states to 2123 states and 3359 transitions. [2024-11-27 20:20:02,220 INFO L78 Accepts]: Start accepts. Automaton has 2123 states and 3359 transitions. Word has length 50 [2024-11-27 20:20:02,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:20:02,221 INFO L471 AbstractCegarLoop]: Abstraction has 2123 states and 3359 transitions. [2024-11-27 20:20:02,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:20:02,221 INFO L276 IsEmpty]: Start isEmpty. Operand 2123 states and 3359 transitions. [2024-11-27 20:20:02,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-27 20:20:02,222 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:20:02,223 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] [2024-11-27 20:20:02,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-27 20:20:02,223 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:20:02,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:20:02,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1294837951, now seen corresponding path program 1 times [2024-11-27 20:20:02,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:20:02,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126996765] [2024-11-27 20:20:02,224 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:20:02,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:20:02,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:20:02,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:20:02,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:20:02,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126996765] [2024-11-27 20:20:02,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126996765] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:20:02,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:20:02,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:20:02,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120532945] [2024-11-27 20:20:02,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:20:02,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:20:02,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:20:02,365 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:20:02,365 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:20:02,365 INFO L87 Difference]: Start difference. First operand 2123 states and 3359 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:20:07,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:20:07,628 INFO L93 Difference]: Finished difference Result 3627 states and 6232 transitions. [2024-11-27 20:20:07,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:20:07,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2024-11-27 20:20:07,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:20:07,642 INFO L225 Difference]: With dead ends: 3627 [2024-11-27 20:20:07,642 INFO L226 Difference]: Without dead ends: 2874 [2024-11-27 20:20:07,644 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:20:07,645 INFO L435 NwaCegarLoop]: 159 mSDtfsCounter, 843 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 998 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 3275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 998 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:20:07,645 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [843 Valid, 166 Invalid, 3275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [998 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-11-27 20:20:07,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2874 states. [2024-11-27 20:20:07,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2874 to 2874. [2024-11-27 20:20:07,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2874 states, 2872 states have (on average 1.6483286908077994) internal successors, (4734), 2873 states have internal predecessors, (4734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:20:07,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2874 states to 2874 states and 4734 transitions. [2024-11-27 20:20:07,752 INFO L78 Accepts]: Start accepts. Automaton has 2874 states and 4734 transitions. Word has length 61 [2024-11-27 20:20:07,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:20:07,753 INFO L471 AbstractCegarLoop]: Abstraction has 2874 states and 4734 transitions. [2024-11-27 20:20:07,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:20:07,753 INFO L276 IsEmpty]: Start isEmpty. Operand 2874 states and 4734 transitions. [2024-11-27 20:20:07,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-27 20:20:07,758 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:20:07,758 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] [2024-11-27 20:20:07,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-27 20:20:07,759 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:20:07,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:20:07,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1523853909, now seen corresponding path program 1 times [2024-11-27 20:20:07,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:20:07,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807429562] [2024-11-27 20:20:07,760 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:20:07,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:20:07,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:20:07,977 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 20:20:07,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:20:07,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807429562] [2024-11-27 20:20:07,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807429562] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:20:07,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:20:07,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:20:07,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490152426] [2024-11-27 20:20:07,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:20:07,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:20:07,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:20:07,981 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:20:07,981 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:20:07,981 INFO L87 Difference]: Start difference. First operand 2874 states and 4734 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:20:08,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:20:08,243 INFO L93 Difference]: Finished difference Result 8524 states and 12691 transitions. [2024-11-27 20:20:08,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:20:08,244 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-27 20:20:08,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:20:08,272 INFO L225 Difference]: With dead ends: 8524 [2024-11-27 20:20:08,273 INFO L226 Difference]: Without dead ends: 7186 [2024-11-27 20:20:08,276 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:20:08,278 INFO L435 NwaCegarLoop]: 1582 mSDtfsCounter, 4667 mSDsluCounter, 1768 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4667 SdHoareTripleChecker+Valid, 3350 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:20:08,278 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4667 Valid, 3350 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:20:08,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7186 states. [2024-11-27 20:20:08,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7186 to 4210. [2024-11-27 20:20:08,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4210 states, 4208 states have (on average 1.5679657794676807) internal successors, (6598), 4209 states have internal predecessors, (6598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:20:08,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4210 states to 4210 states and 6598 transitions. [2024-11-27 20:20:08,467 INFO L78 Accepts]: Start accepts. Automaton has 4210 states and 6598 transitions. Word has length 65 [2024-11-27 20:20:08,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:20:08,468 INFO L471 AbstractCegarLoop]: Abstraction has 4210 states and 6598 transitions. [2024-11-27 20:20:08,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:20:08,468 INFO L276 IsEmpty]: Start isEmpty. Operand 4210 states and 6598 transitions. [2024-11-27 20:20:08,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-27 20:20:08,471 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:20:08,471 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] [2024-11-27 20:20:08,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-27 20:20:08,471 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:20:08,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:20:08,473 INFO L85 PathProgramCache]: Analyzing trace with hash 555644587, now seen corresponding path program 1 times [2024-11-27 20:20:08,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:20:08,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107663444] [2024-11-27 20:20:08,474 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:20:08,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:20:08,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:20:08,689 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-27 20:20:08,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:20:08,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107663444] [2024-11-27 20:20:08,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107663444] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:20:08,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:20:08,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:20:08,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426008460] [2024-11-27 20:20:08,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:20:08,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:20:08,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:20:08,691 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:20:08,692 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:20:08,692 INFO L87 Difference]: Start difference. First operand 4210 states and 6598 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:20:08,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:20:08,979 INFO L93 Difference]: Finished difference Result 9860 states and 14555 transitions. [2024-11-27 20:20:08,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:20:08,980 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-27 20:20:08,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:20:09,032 INFO L225 Difference]: With dead ends: 9860 [2024-11-27 20:20:09,032 INFO L226 Difference]: Without dead ends: 8522 [2024-11-27 20:20:09,036 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:20:09,037 INFO L435 NwaCegarLoop]: 1579 mSDtfsCounter, 4692 mSDsluCounter, 1724 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4692 SdHoareTripleChecker+Valid, 3303 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:20:09,039 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4692 Valid, 3303 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:20:09,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8522 states. [2024-11-27 20:20:09,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8522 to 6218. [2024-11-27 20:20:09,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6218 states, 6216 states have (on average 1.508043758043758) internal successors, (9374), 6217 states have internal predecessors, (9374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:20:09,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6218 states to 6218 states and 9374 transitions. [2024-11-27 20:20:09,320 INFO L78 Accepts]: Start accepts. Automaton has 6218 states and 9374 transitions. Word has length 65 [2024-11-27 20:20:09,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:20:09,320 INFO L471 AbstractCegarLoop]: Abstraction has 6218 states and 9374 transitions. [2024-11-27 20:20:09,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:20:09,321 INFO L276 IsEmpty]: Start isEmpty. Operand 6218 states and 9374 transitions. [2024-11-27 20:20:09,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-27 20:20:09,323 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:20:09,323 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] [2024-11-27 20:20:09,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-27 20:20:09,323 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:20:09,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:20:09,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1958389845, now seen corresponding path program 1 times [2024-11-27 20:20:09,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:20:09,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161444936] [2024-11-27 20:20:09,327 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:20:09,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:20:09,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:20:09,594 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-27 20:20:09,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:20:09,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161444936] [2024-11-27 20:20:09,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161444936] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:20:09,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:20:09,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:20:09,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734525422] [2024-11-27 20:20:09,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:20:09,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:20:09,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:20:09,597 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:20:09,598 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:20:09,598 INFO L87 Difference]: Start difference. First operand 6218 states and 9374 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:20:09,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:20:09,915 INFO L93 Difference]: Finished difference Result 11196 states and 16419 transitions. [2024-11-27 20:20:09,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:20:09,916 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-27 20:20:09,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:20:09,944 INFO L225 Difference]: With dead ends: 11196 [2024-11-27 20:20:09,944 INFO L226 Difference]: Without dead ends: 9858 [2024-11-27 20:20:09,949 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:20:09,950 INFO L435 NwaCegarLoop]: 1581 mSDtfsCounter, 4673 mSDsluCounter, 1756 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4673 SdHoareTripleChecker+Valid, 3337 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:20:09,951 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4673 Valid, 3337 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:20:09,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9858 states. [2024-11-27 20:20:10,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9858 to 7554. [2024-11-27 20:20:10,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7554 states, 7552 states have (on average 1.488082627118644) internal successors, (11238), 7553 states have internal predecessors, (11238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:20:10,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7554 states to 7554 states and 11238 transitions. [2024-11-27 20:20:10,228 INFO L78 Accepts]: Start accepts. Automaton has 7554 states and 11238 transitions. Word has length 65 [2024-11-27 20:20:10,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:20:10,229 INFO L471 AbstractCegarLoop]: Abstraction has 7554 states and 11238 transitions. [2024-11-27 20:20:10,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:20:10,230 INFO L276 IsEmpty]: Start isEmpty. Operand 7554 states and 11238 transitions. [2024-11-27 20:20:10,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-27 20:20:10,232 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:20:10,232 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] [2024-11-27 20:20:10,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-27 20:20:10,233 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:20:10,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:20:10,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1188964029, now seen corresponding path program 1 times [2024-11-27 20:20:10,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:20:10,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491856710] [2024-11-27 20:20:10,234 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:20:10,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:20:10,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:20:10,390 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:20:10,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:20:10,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491856710] [2024-11-27 20:20:10,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491856710] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:20:10,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:20:10,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:20:10,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295340858] [2024-11-27 20:20:10,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:20:10,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:20:10,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:20:10,392 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:20:10,392 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:20:10,392 INFO L87 Difference]: Start difference. First operand 7554 states and 11238 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:20:10,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:20:10,521 INFO L93 Difference]: Finished difference Result 11896 states and 17379 transitions. [2024-11-27 20:20:10,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:20:10,522 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-27 20:20:10,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:20:10,538 INFO L225 Difference]: With dead ends: 11896 [2024-11-27 20:20:10,538 INFO L226 Difference]: Without dead ends: 5878 [2024-11-27 20:20:10,547 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:20:10,548 INFO L435 NwaCegarLoop]: 1560 mSDtfsCounter, 42 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 3073 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:20:10,549 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 3073 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:20:10,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5878 states. [2024-11-27 20:20:10,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5878 to 5876. [2024-11-27 20:20:10,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5876 states, 5874 states have (on average 1.5171944160708206) internal successors, (8912), 5875 states have internal predecessors, (8912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:20:10,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5876 states to 5876 states and 8912 transitions. [2024-11-27 20:20:10,740 INFO L78 Accepts]: Start accepts. Automaton has 5876 states and 8912 transitions. Word has length 67 [2024-11-27 20:20:10,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:20:10,742 INFO L471 AbstractCegarLoop]: Abstraction has 5876 states and 8912 transitions. [2024-11-27 20:20:10,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:20:10,743 INFO L276 IsEmpty]: Start isEmpty. Operand 5876 states and 8912 transitions. [2024-11-27 20:20:10,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-27 20:20:10,744 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:20:10,745 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] [2024-11-27 20:20:10,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-27 20:20:10,745 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:20:10,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:20:10,746 INFO L85 PathProgramCache]: Analyzing trace with hash -733131994, now seen corresponding path program 1 times [2024-11-27 20:20:10,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:20:10,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143278155] [2024-11-27 20:20:10,746 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:20:10,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:20:10,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:20:10,935 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 20:20:10,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:20:10,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143278155] [2024-11-27 20:20:10,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143278155] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:20:10,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:20:10,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:20:10,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848758755] [2024-11-27 20:20:10,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:20:10,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:20:10,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:20:10,937 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:20:10,937 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:20:10,937 INFO L87 Difference]: Start difference. First operand 5876 states and 8912 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:20:11,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:20:11,254 INFO L93 Difference]: Finished difference Result 9726 states and 14357 transitions. [2024-11-27 20:20:11,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:20:11,255 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-27 20:20:11,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:20:11,277 INFO L225 Difference]: With dead ends: 9726 [2024-11-27 20:20:11,277 INFO L226 Difference]: Without dead ends: 8764 [2024-11-27 20:20:11,281 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:20:11,282 INFO L435 NwaCegarLoop]: 1577 mSDtfsCounter, 4665 mSDsluCounter, 1827 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4665 SdHoareTripleChecker+Valid, 3404 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:20:11,283 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4665 Valid, 3404 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:20:11,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8764 states. [2024-11-27 20:20:11,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8764 to 6836. [2024-11-27 20:20:11,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6836 states, 6834 states have (on average 1.5007316359379572) internal successors, (10256), 6835 states have internal predecessors, (10256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:20:11,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6836 states to 6836 states and 10256 transitions. [2024-11-27 20:20:11,512 INFO L78 Accepts]: Start accepts. Automaton has 6836 states and 10256 transitions. Word has length 67 [2024-11-27 20:20:11,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:20:11,512 INFO L471 AbstractCegarLoop]: Abstraction has 6836 states and 10256 transitions. [2024-11-27 20:20:11,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:20:11,513 INFO L276 IsEmpty]: Start isEmpty. Operand 6836 states and 10256 transitions. [2024-11-27 20:20:11,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-27 20:20:11,514 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:20:11,515 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] [2024-11-27 20:20:11,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-27 20:20:11,516 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:20:11,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:20:11,518 INFO L85 PathProgramCache]: Analyzing trace with hash 548136257, now seen corresponding path program 1 times [2024-11-27 20:20:11,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:20:11,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399852837] [2024-11-27 20:20:11,518 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:20:11,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:20:11,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:20:11,670 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:20:11,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:20:11,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399852837] [2024-11-27 20:20:11,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399852837] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:20:11,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:20:11,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:20:11,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953935395] [2024-11-27 20:20:11,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:20:11,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:20:11,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:20:11,672 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:20:11,672 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:20:11,672 INFO L87 Difference]: Start difference. First operand 6836 states and 10256 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:20:11,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:20:11,866 INFO L93 Difference]: Finished difference Result 9480 states and 13954 transitions. [2024-11-27 20:20:11,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:20:11,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-27 20:20:11,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:20:11,879 INFO L225 Difference]: With dead ends: 9480 [2024-11-27 20:20:11,880 INFO L226 Difference]: Without dead ends: 4198 [2024-11-27 20:20:11,887 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:20:11,888 INFO L435 NwaCegarLoop]: 1553 mSDtfsCounter, 37 mSDsluCounter, 1505 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3058 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:20:11,888 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 3058 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:20:11,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4198 states. [2024-11-27 20:20:12,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4198 to 4196. [2024-11-27 20:20:12,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4196 states, 4194 states have (on average 1.553648068669528) internal successors, (6516), 4195 states have internal predecessors, (6516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:20:12,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4196 states to 4196 states and 6516 transitions. [2024-11-27 20:20:12,056 INFO L78 Accepts]: Start accepts. Automaton has 4196 states and 6516 transitions. Word has length 68 [2024-11-27 20:20:12,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:20:12,057 INFO L471 AbstractCegarLoop]: Abstraction has 4196 states and 6516 transitions. [2024-11-27 20:20:12,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:20:12,057 INFO L276 IsEmpty]: Start isEmpty. Operand 4196 states and 6516 transitions. [2024-11-27 20:20:12,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-27 20:20:12,059 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:20:12,059 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] [2024-11-27 20:20:12,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-27 20:20:12,060 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:20:12,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:20:12,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1967598547, now seen corresponding path program 1 times [2024-11-27 20:20:12,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:20:12,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425384872] [2024-11-27 20:20:12,061 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:20:12,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:20:12,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:20:12,260 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:20:12,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:20:12,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425384872] [2024-11-27 20:20:12,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425384872] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:20:12,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:20:12,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:20:12,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200732565] [2024-11-27 20:20:12,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:20:12,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:20:12,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:20:12,263 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:20:12,263 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:20:12,264 INFO L87 Difference]: Start difference. First operand 4196 states and 6516 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:20:12,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:20:12,354 INFO L93 Difference]: Finished difference Result 5520 states and 8344 transitions. [2024-11-27 20:20:12,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:20:12,354 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-11-27 20:20:12,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:20:12,363 INFO L225 Difference]: With dead ends: 5520 [2024-11-27 20:20:12,364 INFO L226 Difference]: Without dead ends: 2878 [2024-11-27 20:20:12,367 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:20:12,368 INFO L435 NwaCegarLoop]: 1546 mSDtfsCounter, 34 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3043 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:20:12,368 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3043 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:20:12,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2878 states. [2024-11-27 20:20:12,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2878 to 2876. [2024-11-27 20:20:12,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2876 states, 2874 states have (on average 1.6242171189979122) internal successors, (4668), 2875 states have internal predecessors, (4668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:20:12,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2876 states to 2876 states and 4668 transitions. [2024-11-27 20:20:12,471 INFO L78 Accepts]: Start accepts. Automaton has 2876 states and 4668 transitions. Word has length 70 [2024-11-27 20:20:12,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:20:12,472 INFO L471 AbstractCegarLoop]: Abstraction has 2876 states and 4668 transitions. [2024-11-27 20:20:12,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:20:12,472 INFO L276 IsEmpty]: Start isEmpty. Operand 2876 states and 4668 transitions. [2024-11-27 20:20:12,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-27 20:20:12,474 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:20:12,474 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:20:12,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-27 20:20:12,475 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:20:12,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:20:12,475 INFO L85 PathProgramCache]: Analyzing trace with hash -673918747, now seen corresponding path program 1 times [2024-11-27 20:20:12,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:20:12,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139233219] [2024-11-27 20:20:12,476 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:20:12,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:20:12,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:20:12,660 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:20:12,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:20:12,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139233219] [2024-11-27 20:20:12,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139233219] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:20:12,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:20:12,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:20:12,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921659214] [2024-11-27 20:20:12,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:20:12,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:20:12,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:20:12,662 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:20:12,662 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:20:12,662 INFO L87 Difference]: Start difference. First operand 2876 states and 4668 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:20:12,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:20:12,723 INFO L93 Difference]: Finished difference Result 3540 states and 5572 transitions. [2024-11-27 20:20:12,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:20:12,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2024-11-27 20:20:12,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:20:12,732 INFO L225 Difference]: With dead ends: 3540 [2024-11-27 20:20:12,732 INFO L226 Difference]: Without dead ends: 2218 [2024-11-27 20:20:12,734 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:20:12,735 INFO L435 NwaCegarLoop]: 1539 mSDtfsCounter, 31 mSDsluCounter, 1489 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3028 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:20:12,735 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3028 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:20:12,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2218 states. [2024-11-27 20:20:12,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2218 to 2216. [2024-11-27 20:20:12,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2216 states, 2214 states have (on average 1.6960252935862692) internal successors, (3755), 2215 states have internal predecessors, (3755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:20:12,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 3755 transitions. [2024-11-27 20:20:12,801 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 3755 transitions. Word has length 72 [2024-11-27 20:20:12,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:20:12,801 INFO L471 AbstractCegarLoop]: Abstraction has 2216 states and 3755 transitions. [2024-11-27 20:20:12,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:20:12,801 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 3755 transitions. [2024-11-27 20:20:12,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-27 20:20:12,802 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:20:12,803 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:20:12,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-27 20:20:12,803 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:20:12,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:20:12,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1516893303, now seen corresponding path program 1 times [2024-11-27 20:20:12,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:20:12,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416626041] [2024-11-27 20:20:12,804 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:20:12,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:20:12,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:20:15,161 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:20:15,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:20:15,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416626041] [2024-11-27 20:20:15,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416626041] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:20:15,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829368681] [2024-11-27 20:20:15,162 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:20:15,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:20:15,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e441bbb-86a3-4b8a-86d0-94c376c3e7e6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:20:15,166 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e441bbb-86a3-4b8a-86d0-94c376c3e7e6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:20:15,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e441bbb-86a3-4b8a-86d0-94c376c3e7e6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:20:15,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:20:15,354 INFO L256 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-27 20:20:15,361 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:20:16,251 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:20:16,252 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:20:17,727 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:20:17,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829368681] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:20:17,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:20:17,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2024-11-27 20:20:17,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195432691] [2024-11-27 20:20:17,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:20:17,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-27 20:20:17,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:20:17,729 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-27 20:20:17,730 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=669, Unknown=0, NotChecked=0, Total=756 [2024-11-27 20:20:17,730 INFO L87 Difference]: Start difference. First operand 2216 states and 3755 transitions. Second operand has 28 states, 28 states have (on average 6.714285714285714) internal successors, (188), 27 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:20:22,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:20:22,398 INFO L93 Difference]: Finished difference Result 4580 states and 6939 transitions. [2024-11-27 20:20:22,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-27 20:20:22,399 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.714285714285714) internal successors, (188), 27 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-11-27 20:20:22,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:20:22,408 INFO L225 Difference]: With dead ends: 4580 [2024-11-27 20:20:22,408 INFO L226 Difference]: Without dead ends: 3918 [2024-11-27 20:20:22,411 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 824 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=858, Invalid=3174, Unknown=0, NotChecked=0, Total=4032 [2024-11-27 20:20:22,411 INFO L435 NwaCegarLoop]: 1493 mSDtfsCounter, 21782 mSDsluCounter, 4964 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21782 SdHoareTripleChecker+Valid, 6457 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-27 20:20:22,412 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21782 Valid, 6457 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-27 20:20:22,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3918 states. [2024-11-27 20:20:22,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3918 to 3855. [2024-11-27 20:20:22,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3855 states, 3853 states have (on average 1.5341292499351156) internal successors, (5911), 3854 states have internal predecessors, (5911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:20:22,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3855 states to 3855 states and 5911 transitions. [2024-11-27 20:20:22,508 INFO L78 Accepts]: Start accepts. Automaton has 3855 states and 5911 transitions. Word has length 74 [2024-11-27 20:20:22,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:20:22,508 INFO L471 AbstractCegarLoop]: Abstraction has 3855 states and 5911 transitions. [2024-11-27 20:20:22,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.714285714285714) internal successors, (188), 27 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:20:22,508 INFO L276 IsEmpty]: Start isEmpty. Operand 3855 states and 5911 transitions. [2024-11-27 20:20:22,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-27 20:20:22,510 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:20:22,510 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:20:22,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e441bbb-86a3-4b8a-86d0-94c376c3e7e6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-27 20:20:22,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e441bbb-86a3-4b8a-86d0-94c376c3e7e6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:20:22,715 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:20:22,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:20:22,715 INFO L85 PathProgramCache]: Analyzing trace with hash 217982714, now seen corresponding path program 1 times [2024-11-27 20:20:22,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:20:22,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369642885] [2024-11-27 20:20:22,715 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:20:22,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:20:22,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:20:23,321 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:20:23,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:20:23,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369642885] [2024-11-27 20:20:23,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369642885] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:20:23,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147024348] [2024-11-27 20:20:23,322 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:20:23,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:20:23,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e441bbb-86a3-4b8a-86d0-94c376c3e7e6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:20:23,324 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e441bbb-86a3-4b8a-86d0-94c376c3e7e6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:20:23,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e441bbb-86a3-4b8a-86d0-94c376c3e7e6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:20:23,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:20:23,457 INFO L256 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-27 20:20:23,460 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:20:24,007 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:20:24,008 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:20:25,068 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:20:25,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147024348] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:20:25,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:20:25,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-27 20:20:25,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360777208] [2024-11-27 20:20:25,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:20:25,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-27 20:20:25,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:20:25,071 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-27 20:20:25,071 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2024-11-27 20:20:25,072 INFO L87 Difference]: Start difference. First operand 3855 states and 5911 transitions. Second operand has 25 states, 25 states have (on average 8.36) internal successors, (209), 24 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:20:26,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:20:26,694 INFO L93 Difference]: Finished difference Result 10432 states and 14716 transitions. [2024-11-27 20:20:26,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-27 20:20:26,695 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 8.36) internal successors, (209), 24 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-11-27 20:20:26,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:20:26,710 INFO L225 Difference]: With dead ends: 10432 [2024-11-27 20:20:26,710 INFO L226 Difference]: Without dead ends: 8131 [2024-11-27 20:20:26,715 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=457, Invalid=1613, Unknown=0, NotChecked=0, Total=2070 [2024-11-27 20:20:26,715 INFO L435 NwaCegarLoop]: 1494 mSDtfsCounter, 15506 mSDsluCounter, 6443 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15506 SdHoareTripleChecker+Valid, 7937 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:20:26,716 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15506 Valid, 7937 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 671 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 20:20:26,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8131 states. [2024-11-27 20:20:27,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8131 to 8090. [2024-11-27 20:20:27,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8090 states, 8088 states have (on average 1.4176557863501484) internal successors, (11466), 8089 states have internal predecessors, (11466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:20:27,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8090 states to 8090 states and 11466 transitions. [2024-11-27 20:20:27,030 INFO L78 Accepts]: Start accepts. Automaton has 8090 states and 11466 transitions. Word has length 75 [2024-11-27 20:20:27,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:20:27,030 INFO L471 AbstractCegarLoop]: Abstraction has 8090 states and 11466 transitions. [2024-11-27 20:20:27,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 8.36) internal successors, (209), 24 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:20:27,030 INFO L276 IsEmpty]: Start isEmpty. Operand 8090 states and 11466 transitions. [2024-11-27 20:20:27,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-27 20:20:27,032 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:20:27,032 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:20:27,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e441bbb-86a3-4b8a-86d0-94c376c3e7e6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-27 20:20:27,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e441bbb-86a3-4b8a-86d0-94c376c3e7e6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-27 20:20:27,233 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:20:27,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:20:27,233 INFO L85 PathProgramCache]: Analyzing trace with hash -268185879, now seen corresponding path program 1 times [2024-11-27 20:20:27,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:20:27,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888564048] [2024-11-27 20:20:27,233 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:20:27,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:20:27,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:20:27,666 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:20:27,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:20:27,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888564048] [2024-11-27 20:20:27,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888564048] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:20:27,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260862892] [2024-11-27 20:20:27,666 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:20:27,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:20:27,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e441bbb-86a3-4b8a-86d0-94c376c3e7e6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:20:27,669 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e441bbb-86a3-4b8a-86d0-94c376c3e7e6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:20:27,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e441bbb-86a3-4b8a-86d0-94c376c3e7e6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 20:20:27,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:20:27,808 INFO L256 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-27 20:20:27,811 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:20:28,527 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:20:28,527 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:20:29,515 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:20:29,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260862892] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:20:29,515 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:20:29,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2024-11-27 20:20:29,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839525931] [2024-11-27 20:20:29,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:20:29,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-27 20:20:29,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:20:29,516 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-27 20:20:29,516 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=624, Unknown=0, NotChecked=0, Total=756 [2024-11-27 20:20:29,517 INFO L87 Difference]: Start difference. First operand 8090 states and 11466 transitions. Second operand has 28 states, 28 states have (on average 7.0) internal successors, (196), 28 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:20:30,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:20:30,529 INFO L93 Difference]: Finished difference Result 19767 states and 26902 transitions. [2024-11-27 20:20:30,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-27 20:20:30,530 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 7.0) internal successors, (196), 28 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-27 20:20:30,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:20:30,551 INFO L225 Difference]: With dead ends: 19767 [2024-11-27 20:20:30,551 INFO L226 Difference]: Without dead ends: 13231 [2024-11-27 20:20:30,558 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=351, Invalid=1209, Unknown=0, NotChecked=0, Total=1560 [2024-11-27 20:20:30,560 INFO L435 NwaCegarLoop]: 1517 mSDtfsCounter, 12194 mSDsluCounter, 7884 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12194 SdHoareTripleChecker+Valid, 9401 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:20:30,560 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12194 Valid, 9401 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 20:20:30,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13231 states. [2024-11-27 20:20:30,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13231 to 12589. [2024-11-27 20:20:30,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12589 states, 12587 states have (on average 1.3697465639151505) internal successors, (17241), 12588 states have internal predecessors, (17241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:20:30,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12589 states to 12589 states and 17241 transitions. [2024-11-27 20:20:30,988 INFO L78 Accepts]: Start accepts. Automaton has 12589 states and 17241 transitions. Word has length 76 [2024-11-27 20:20:30,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:20:30,988 INFO L471 AbstractCegarLoop]: Abstraction has 12589 states and 17241 transitions. [2024-11-27 20:20:30,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 7.0) internal successors, (196), 28 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:20:30,989 INFO L276 IsEmpty]: Start isEmpty. Operand 12589 states and 17241 transitions. [2024-11-27 20:20:30,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-27 20:20:30,991 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:20:30,991 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:20:31,000 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e441bbb-86a3-4b8a-86d0-94c376c3e7e6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 20:20:31,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e441bbb-86a3-4b8a-86d0-94c376c3e7e6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-27 20:20:31,192 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:20:31,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:20:31,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1113650506, now seen corresponding path program 1 times [2024-11-27 20:20:31,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:20:31,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746705190] [2024-11-27 20:20:31,192 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:20:31,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:20:31,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:20:33,483 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:20:33,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:20:33,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746705190] [2024-11-27 20:20:33,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746705190] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:20:33,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506162083] [2024-11-27 20:20:33,484 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:20:33,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:20:33,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e441bbb-86a3-4b8a-86d0-94c376c3e7e6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:20:33,486 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e441bbb-86a3-4b8a-86d0-94c376c3e7e6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:20:33,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e441bbb-86a3-4b8a-86d0-94c376c3e7e6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 20:20:33,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:20:33,647 INFO L256 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-27 20:20:33,651 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:20:56,893 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:20:56,894 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:21:02,459 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:21:02,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506162083] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:21:02,459 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:21:02,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 25, 23] total 60 [2024-11-27 20:21:02,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843605111] [2024-11-27 20:21:02,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:21:02,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-27 20:21:02,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:21:02,461 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-27 20:21:02,462 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=358, Invalid=3182, Unknown=0, NotChecked=0, Total=3540 [2024-11-27 20:21:02,462 INFO L87 Difference]: Start difference. First operand 12589 states and 17241 transitions. Second operand has 60 states, 60 states have (on average 3.4833333333333334) internal successors, (209), 60 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:21:12,228 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-27 20:23:47,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:23:47,488 INFO L93 Difference]: Finished difference Result 61447 states and 80764 transitions. [2024-11-27 20:23:47,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 280 states. [2024-11-27 20:23:47,489 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 3.4833333333333334) internal successors, (209), 60 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-11-27 20:23:47,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:23:47,726 INFO L225 Difference]: With dead ends: 61447 [2024-11-27 20:23:47,726 INFO L226 Difference]: Without dead ends: 54239 [2024-11-27 20:23:47,759 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 336 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47184 ImplicationChecksByTransitivity, 158.3s TimeCoverageRelationStatistics Valid=18868, Invalid=95038, Unknown=0, NotChecked=0, Total=113906 [2024-11-27 20:23:47,761 INFO L435 NwaCegarLoop]: 1561 mSDtfsCounter, 34823 mSDsluCounter, 25732 mSDsCounter, 0 mSdLazyCounter, 6934 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34823 SdHoareTripleChecker+Valid, 27293 SdHoareTripleChecker+Invalid, 7182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 6934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:23:47,761 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34823 Valid, 27293 Invalid, 7182 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [248 Valid, 6934 Invalid, 0 Unknown, 0 Unchecked, 15.5s Time] [2024-11-27 20:23:47,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54239 states. [2024-11-27 20:23:50,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54239 to 21724. [2024-11-27 20:23:50,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21724 states, 21722 states have (on average 1.3423257526931223) internal successors, (29158), 21723 states have internal predecessors, (29158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:50,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21724 states to 21724 states and 29158 transitions. [2024-11-27 20:23:50,284 INFO L78 Accepts]: Start accepts. Automaton has 21724 states and 29158 transitions. Word has length 77 [2024-11-27 20:23:50,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:23:50,285 INFO L471 AbstractCegarLoop]: Abstraction has 21724 states and 29158 transitions. [2024-11-27 20:23:50,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 3.4833333333333334) internal successors, (209), 60 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:50,285 INFO L276 IsEmpty]: Start isEmpty. Operand 21724 states and 29158 transitions. [2024-11-27 20:23:50,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-27 20:23:50,295 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:23:50,296 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:23:50,314 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e441bbb-86a3-4b8a-86d0-94c376c3e7e6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-27 20:23:50,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e441bbb-86a3-4b8a-86d0-94c376c3e7e6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-27 20:23:50,497 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:23:50,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:50,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1383704617, now seen corresponding path program 1 times [2024-11-27 20:23:50,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:50,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227867559] [2024-11-27 20:23:50,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:50,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:50,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:54,321 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:23:54,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:54,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227867559] [2024-11-27 20:23:54,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227867559] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:23:54,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154728415] [2024-11-27 20:23:54,322 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:54,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:23:54,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e441bbb-86a3-4b8a-86d0-94c376c3e7e6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:23:54,325 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e441bbb-86a3-4b8a-86d0-94c376c3e7e6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:23:54,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e441bbb-86a3-4b8a-86d0-94c376c3e7e6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 20:23:54,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:54,533 INFO L256 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-27 20:23:54,539 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:23:54,939 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 20:23:54,939 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:23:55,304 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 20:23:55,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154728415] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:23:55,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:23:55,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 6, 4] total 30 [2024-11-27 20:23:55,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17636451] [2024-11-27 20:23:55,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:23:55,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-27 20:23:55,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:55,307 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-27 20:23:55,307 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=774, Unknown=0, NotChecked=0, Total=870 [2024-11-27 20:23:55,308 INFO L87 Difference]: Start difference. First operand 21724 states and 29158 transitions. Second operand has 30 states, 30 states have (on average 7.233333333333333) internal successors, (217), 30 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:34,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:24:34,371 INFO L93 Difference]: Finished difference Result 109788 states and 140979 transitions. [2024-11-27 20:24:34,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2024-11-27 20:24:34,371 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 7.233333333333333) internal successors, (217), 30 states have internal predecessors, (217), 0 states have call successors, (0), 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 78 [2024-11-27 20:24:34,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:24:34,580 INFO L225 Difference]: With dead ends: 109788 [2024-11-27 20:24:34,581 INFO L226 Difference]: Without dead ends: 89618 [2024-11-27 20:24:34,609 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21408 ImplicationChecksByTransitivity, 27.6s TimeCoverageRelationStatistics Valid=8576, Invalid=39604, Unknown=0, NotChecked=0, Total=48180 [2024-11-27 20:24:34,611 INFO L435 NwaCegarLoop]: 1577 mSDtfsCounter, 21410 mSDsluCounter, 17871 mSDsCounter, 0 mSdLazyCounter, 3417 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21410 SdHoareTripleChecker+Valid, 19448 SdHoareTripleChecker+Invalid, 3640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 3417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:24:34,614 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21410 Valid, 19448 Invalid, 3640 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [223 Valid, 3417 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2024-11-27 20:24:34,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89618 states. [2024-11-27 20:24:39,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89618 to 48913. [2024-11-27 20:24:39,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48913 states, 48911 states have (on average 1.2561387009057268) internal successors, (61439), 48912 states have internal predecessors, (61439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:39,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48913 states to 48913 states and 61439 transitions. [2024-11-27 20:24:39,890 INFO L78 Accepts]: Start accepts. Automaton has 48913 states and 61439 transitions. Word has length 78 [2024-11-27 20:24:39,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:24:39,890 INFO L471 AbstractCegarLoop]: Abstraction has 48913 states and 61439 transitions. [2024-11-27 20:24:39,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 7.233333333333333) internal successors, (217), 30 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:39,891 INFO L276 IsEmpty]: Start isEmpty. Operand 48913 states and 61439 transitions. [2024-11-27 20:24:39,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-27 20:24:39,893 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:24:39,893 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:39,905 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e441bbb-86a3-4b8a-86d0-94c376c3e7e6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-27 20:24:40,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e441bbb-86a3-4b8a-86d0-94c376c3e7e6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-27 20:24:40,094 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:24:40,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:40,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1281515107, now seen corresponding path program 1 times [2024-11-27 20:24:40,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:40,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955414712] [2024-11-27 20:24:40,097 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:24:40,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:40,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:43,242 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:43,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:43,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955414712] [2024-11-27 20:24:43,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955414712] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:24:43,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952231152] [2024-11-27 20:24:43,243 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:24:43,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:43,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e441bbb-86a3-4b8a-86d0-94c376c3e7e6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:24:43,246 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e441bbb-86a3-4b8a-86d0-94c376c3e7e6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:24:43,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e441bbb-86a3-4b8a-86d0-94c376c3e7e6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 20:24:43,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:43,425 INFO L256 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-27 20:24:43,434 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:24:50,304 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:50,305 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:25:02,101 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:02,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952231152] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:25:02,102 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:25:02,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 28, 27] total 77 [2024-11-27 20:25:02,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722925999] [2024-11-27 20:25:02,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:25:02,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2024-11-27 20:25:02,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:02,104 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2024-11-27 20:25:02,105 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=560, Invalid=5292, Unknown=0, NotChecked=0, Total=5852 [2024-11-27 20:25:02,105 INFO L87 Difference]: Start difference. First operand 48913 states and 61439 transitions. Second operand has 77 states, 77 states have (on average 2.8051948051948052) internal successors, (216), 77 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:27:07,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:27:07,409 INFO L93 Difference]: Finished difference Result 95289 states and 119552 transitions. [2024-11-27 20:27:07,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 218 states. [2024-11-27 20:27:07,409 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 2.8051948051948052) internal successors, (216), 77 states have internal predecessors, (216), 0 states have call successors, (0), 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 78 [2024-11-27 20:27:07,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:27:07,550 INFO L225 Difference]: With dead ends: 95289 [2024-11-27 20:27:07,550 INFO L226 Difference]: Without dead ends: 91732 [2024-11-27 20:27:07,572 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 287 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30376 ImplicationChecksByTransitivity, 116.3s TimeCoverageRelationStatistics Valid=13584, Invalid=69648, Unknown=0, NotChecked=0, Total=83232 [2024-11-27 20:27:07,573 INFO L435 NwaCegarLoop]: 1616 mSDtfsCounter, 39999 mSDsluCounter, 28179 mSDsCounter, 0 mSdLazyCounter, 6076 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39999 SdHoareTripleChecker+Valid, 29795 SdHoareTripleChecker+Invalid, 6462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 6076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:27:07,574 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39999 Valid, 29795 Invalid, 6462 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [386 Valid, 6076 Invalid, 0 Unknown, 0 Unchecked, 10.8s Time] [2024-11-27 20:27:07,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91732 states. [2024-11-27 20:27:12,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91732 to 51982. [2024-11-27 20:27:12,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51982 states, 51980 states have (on average 1.2548287803001155) internal successors, (65226), 51981 states have internal predecessors, (65226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:27:12,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51982 states to 51982 states and 65226 transitions. [2024-11-27 20:27:12,909 INFO L78 Accepts]: Start accepts. Automaton has 51982 states and 65226 transitions. Word has length 78 [2024-11-27 20:27:12,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:27:12,909 INFO L471 AbstractCegarLoop]: Abstraction has 51982 states and 65226 transitions. [2024-11-27 20:27:12,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 2.8051948051948052) internal successors, (216), 77 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:27:12,910 INFO L276 IsEmpty]: Start isEmpty. Operand 51982 states and 65226 transitions. [2024-11-27 20:27:12,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-27 20:27:12,912 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:27:12,913 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:27:12,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e441bbb-86a3-4b8a-86d0-94c376c3e7e6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-27 20:27:13,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e441bbb-86a3-4b8a-86d0-94c376c3e7e6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-27 20:27:13,114 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:27:13,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:27:13,115 INFO L85 PathProgramCache]: Analyzing trace with hash -601997175, now seen corresponding path program 1 times [2024-11-27 20:27:13,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:27:13,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525292039] [2024-11-27 20:27:13,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:27:13,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:27:13,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:27:14,313 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:27:14,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:27:14,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525292039] [2024-11-27 20:27:14,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525292039] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:27:14,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975581042] [2024-11-27 20:27:14,314 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:27:14,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:27:14,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e441bbb-86a3-4b8a-86d0-94c376c3e7e6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:27:14,317 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e441bbb-86a3-4b8a-86d0-94c376c3e7e6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:27:14,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e441bbb-86a3-4b8a-86d0-94c376c3e7e6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 20:27:14,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:27:14,527 INFO L256 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-27 20:27:14,534 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:27:20,108 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:27:20,108 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:27:27,064 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:27:27,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975581042] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:27:27,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:27:27,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 23, 19] total 53 [2024-11-27 20:27:27,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771208644] [2024-11-27 20:27:27,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:27:27,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-27 20:27:27,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:27:27,066 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-27 20:27:27,067 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=381, Invalid=2375, Unknown=0, NotChecked=0, Total=2756 [2024-11-27 20:27:27,067 INFO L87 Difference]: Start difference. First operand 51982 states and 65226 transitions. Second operand has 53 states, 53 states have (on average 4.056603773584905) internal successors, (215), 53 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)