./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca442d3-c711-485a-a326-5efc1eb04d56/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca442d3-c711-485a-a326-5efc1eb04d56/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca442d3-c711-485a-a326-5efc1eb04d56/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca442d3-c711-485a-a326-5efc1eb04d56/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca442d3-c711-485a-a326-5efc1eb04d56/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca442d3-c711-485a-a326-5efc1eb04d56/bin/uautomizer-verify-LYvppIcaGC --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 4a068220cd9a63125e810935e79eeb0e481ecd288491865590be5286d46acb22 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 22:50:42,297 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 22:50:42,411 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca442d3-c711-485a-a326-5efc1eb04d56/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 22:50:42,426 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 22:50:42,427 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 22:50:42,456 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 22:50:42,456 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 22:50:42,457 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 22:50:42,457 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 22:50:42,457 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 22:50:42,457 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 22:50:42,457 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 22:50:42,458 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 22:50:42,458 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 22:50:42,458 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 22:50:42,458 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 22:50:42,458 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 22:50:42,458 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 22:50:42,459 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 22:50:42,459 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 22:50:42,459 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 22:50:42,459 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 22:50:42,459 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 22:50:42,462 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 22:50:42,462 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 22:50:42,462 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 22:50:42,462 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 22:50:42,463 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 22:50:42,463 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 22:50:42,463 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:50:42,463 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:50:42,463 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:50:42,463 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:50:42,463 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 22:50:42,463 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:50:42,464 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:50:42,464 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:50:42,464 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:50:42,464 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 22:50:42,464 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 22:50:42,464 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 22:50:42,464 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 22:50:42,464 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 22:50:42,464 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 22:50:42,464 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 22:50:42,464 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 22:50:42,465 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 22:50:42,465 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 22:50:42,465 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_4ca442d3-c711-485a-a326-5efc1eb04d56/bin/uautomizer-verify-LYvppIcaGC 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 -> 4a068220cd9a63125e810935e79eeb0e481ecd288491865590be5286d46acb22 [2024-11-23 22:50:42,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 22:50:42,868 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 22:50:42,871 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 22:50:42,872 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 22:50:42,873 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 22:50:42,876 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca442d3-c711-485a-a326-5efc1eb04d56/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2024-11-23 22:50:46,549 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca442d3-c711-485a-a326-5efc1eb04d56/bin/uautomizer-verify-LYvppIcaGC/data/f61829e7a/ffc3f867a1a74823b532422e7fa10716/FLAGafd7f5bd9 [2024-11-23 22:50:46,936 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 22:50:46,939 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca442d3-c711-485a-a326-5efc1eb04d56/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2024-11-23 22:50:46,963 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca442d3-c711-485a-a326-5efc1eb04d56/bin/uautomizer-verify-LYvppIcaGC/data/f61829e7a/ffc3f867a1a74823b532422e7fa10716/FLAGafd7f5bd9 [2024-11-23 22:50:46,987 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca442d3-c711-485a-a326-5efc1eb04d56/bin/uautomizer-verify-LYvppIcaGC/data/f61829e7a/ffc3f867a1a74823b532422e7fa10716 [2024-11-23 22:50:46,990 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 22:50:46,992 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 22:50:46,994 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 22:50:46,996 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 22:50:47,002 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 22:50:47,003 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:50:46" (1/1) ... [2024-11-23 22:50:47,004 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c0127e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:50:47, skipping insertion in model container [2024-11-23 22:50:47,005 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:50:46" (1/1) ... [2024-11-23 22:50:47,068 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 22:50:47,461 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_4ca442d3-c711-485a-a326-5efc1eb04d56/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[7235,7248] [2024-11-23 22:50:47,538 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:50:47,570 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 22:50:47,629 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca442d3-c711-485a-a326-5efc1eb04d56/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[7235,7248] [2024-11-23 22:50:47,662 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:50:47,688 INFO L204 MainTranslator]: Completed translation [2024-11-23 22:50:47,688 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:50:47 WrapperNode [2024-11-23 22:50:47,689 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 22:50:47,690 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 22:50:47,691 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 22:50:47,691 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 22:50:47,700 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:50:47" (1/1) ... [2024-11-23 22:50:47,722 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:50:47" (1/1) ... [2024-11-23 22:50:47,803 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 633 [2024-11-23 22:50:47,807 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 22:50:47,807 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 22:50:47,808 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 22:50:47,808 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 22:50:47,821 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:50:47" (1/1) ... [2024-11-23 22:50:47,821 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:50:47" (1/1) ... [2024-11-23 22:50:47,831 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:50:47" (1/1) ... [2024-11-23 22:50:47,871 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]. [2024-11-23 22:50:47,872 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:50:47" (1/1) ... [2024-11-23 22:50:47,872 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:50:47" (1/1) ... [2024-11-23 22:50:47,897 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:50:47" (1/1) ... [2024-11-23 22:50:47,902 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:50:47" (1/1) ... [2024-11-23 22:50:47,909 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:50:47" (1/1) ... [2024-11-23 22:50:47,912 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:50:47" (1/1) ... [2024-11-23 22:50:47,914 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:50:47" (1/1) ... [2024-11-23 22:50:47,919 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 22:50:47,920 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 22:50:47,921 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 22:50:47,921 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 22:50:47,922 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:50:47" (1/1) ... [2024-11-23 22:50:47,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:50:47,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca442d3-c711-485a-a326-5efc1eb04d56/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:50:47,964 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca442d3-c711-485a-a326-5efc1eb04d56/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 22:50:47,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca442d3-c711-485a-a326-5efc1eb04d56/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 22:50:48,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 22:50:48,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 22:50:48,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 22:50:48,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 22:50:48,191 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 22:50:48,194 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 22:50:49,178 INFO L? ?]: Removed 48 outVars from TransFormulas that were not future-live. [2024-11-23 22:50:49,178 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 22:50:49,201 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 22:50:49,201 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-23 22:50:49,202 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:50:49 BoogieIcfgContainer [2024-11-23 22:50:49,202 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 22:50:49,207 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 22:50:49,208 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 22:50:49,214 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 22:50:49,216 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:50:46" (1/3) ... [2024-11-23 22:50:49,217 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b38fa8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:50:49, skipping insertion in model container [2024-11-23 22:50:49,218 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:50:47" (2/3) ... [2024-11-23 22:50:49,220 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b38fa8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:50:49, skipping insertion in model container [2024-11-23 22:50:49,221 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:50:49" (3/3) ... [2024-11-23 22:50:49,223 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2024-11-23 22:50:49,244 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 22:50:49,247 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c that has 1 procedures, 135 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-23 22:50:49,374 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 22:50:49,393 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;@32644f7c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 22:50:49,393 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 22:50:49,400 INFO L276 IsEmpty]: Start isEmpty. Operand has 135 states, 133 states have (on average 1.7744360902255638) internal successors, (236), 134 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:50:49,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-23 22:50:49,414 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:50:49,415 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] [2024-11-23 22:50:49,415 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:50:49,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:50:49,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1933157835, now seen corresponding path program 1 times [2024-11-23 22:50:49,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:50:49,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599525348] [2024-11-23 22:50:49,434 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:50:49,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:50:49,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:50:50,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:50:50,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:50:50,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599525348] [2024-11-23 22:50:50,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599525348] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:50:50,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:50:50,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:50:50,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52203907] [2024-11-23 22:50:50,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:50:50,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:50:50,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:50:50,257 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:50:50,258 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:50:50,262 INFO L87 Difference]: Start difference. First operand has 135 states, 133 states have (on average 1.7744360902255638) internal successors, (236), 134 states have internal predecessors, (236), 0 states have call successors, (0), 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 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:50:50,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:50:50,391 INFO L93 Difference]: Finished difference Result 288 states and 491 transitions. [2024-11-23 22:50:50,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:50:50,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-23 22:50:50,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:50:50,406 INFO L225 Difference]: With dead ends: 288 [2024-11-23 22:50:50,406 INFO L226 Difference]: Without dead ends: 201 [2024-11-23 22:50:50,410 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 [2024-11-23 22:50:50,414 INFO L435 NwaCegarLoop]: 236 mSDtfsCounter, 131 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:50:50,414 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 412 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:50:50,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-11-23 22:50:50,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 199. [2024-11-23 22:50:50,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 1.5808080808080809) internal successors, (313), 198 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:50:50,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 313 transitions. [2024-11-23 22:50:50,493 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 313 transitions. Word has length 57 [2024-11-23 22:50:50,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:50:50,493 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 313 transitions. [2024-11-23 22:50:50,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:50:50,494 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 313 transitions. [2024-11-23 22:50:50,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-23 22:50:50,496 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:50:50,496 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] [2024-11-23 22:50:50,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 22:50:50,497 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:50:50,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:50:50,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1883490782, now seen corresponding path program 1 times [2024-11-23 22:50:50,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:50:50,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169982226] [2024-11-23 22:50:50,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:50:50,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:50:50,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:50:50,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:50:50,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:50:50,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169982226] [2024-11-23 22:50:50,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169982226] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:50:50,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:50:50,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:50:50,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16542278] [2024-11-23 22:50:50,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:50:50,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:50:50,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:50:50,903 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:50:50,903 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:50:50,904 INFO L87 Difference]: Start difference. First operand 199 states and 313 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:50:50,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:50:50,988 INFO L93 Difference]: Finished difference Result 475 states and 769 transitions. [2024-11-23 22:50:50,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:50:50,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2024-11-23 22:50:50,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:50:50,996 INFO L225 Difference]: With dead ends: 475 [2024-11-23 22:50:50,996 INFO L226 Difference]: Without dead ends: 330 [2024-11-23 22:50:50,997 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 [2024-11-23 22:50:50,999 INFO L435 NwaCegarLoop]: 266 mSDtfsCounter, 110 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:50:50,999 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 442 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:50:51,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2024-11-23 22:50:51,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 328. [2024-11-23 22:50:51,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 327 states have (on average 1.6055045871559632) internal successors, (525), 327 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:50:51,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 525 transitions. [2024-11-23 22:50:51,037 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 525 transitions. Word has length 59 [2024-11-23 22:50:51,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:50:51,041 INFO L471 AbstractCegarLoop]: Abstraction has 328 states and 525 transitions. [2024-11-23 22:50:51,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:50:51,042 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 525 transitions. [2024-11-23 22:50:51,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-23 22:50:51,045 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:50:51,048 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] [2024-11-23 22:50:51,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 22:50:51,049 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:50:51,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:50:51,049 INFO L85 PathProgramCache]: Analyzing trace with hash -111872728, now seen corresponding path program 1 times [2024-11-23 22:50:51,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:50:51,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967235693] [2024-11-23 22:50:51,050 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:50:51,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:50:51,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:50:51,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:50:51,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:50:51,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967235693] [2024-11-23 22:50:51,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967235693] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:50:51,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:50:51,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:50:51,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025867046] [2024-11-23 22:50:51,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:50:51,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:50:51,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:50:51,284 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:50:51,284 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:50:51,284 INFO L87 Difference]: Start difference. First operand 328 states and 525 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 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) [2024-11-23 22:50:51,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:50:51,338 INFO L93 Difference]: Finished difference Result 603 states and 981 transitions. [2024-11-23 22:50:51,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:50:51,341 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 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 [2024-11-23 22:50:51,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:50:51,344 INFO L225 Difference]: With dead ends: 603 [2024-11-23 22:50:51,348 INFO L226 Difference]: Without dead ends: 458 [2024-11-23 22:50:51,349 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 [2024-11-23 22:50:51,350 INFO L435 NwaCegarLoop]: 267 mSDtfsCounter, 111 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:50:51,353 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 444 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:50:51,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2024-11-23 22:50:51,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 456. [2024-11-23 22:50:51,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 455 states have (on average 1.6153846153846154) internal successors, (735), 455 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:50:51,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 735 transitions. [2024-11-23 22:50:51,395 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 735 transitions. Word has length 61 [2024-11-23 22:50:51,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:50:51,395 INFO L471 AbstractCegarLoop]: Abstraction has 456 states and 735 transitions. [2024-11-23 22:50:51,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 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) [2024-11-23 22:50:51,398 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 735 transitions. [2024-11-23 22:50:51,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-23 22:50:51,401 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:50:51,401 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] [2024-11-23 22:50:51,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 22:50:51,401 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:50:51,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:50:51,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1275396395, now seen corresponding path program 1 times [2024-11-23 22:50:51,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:50:51,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180462034] [2024-11-23 22:50:51,407 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:50:51,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:50:51,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:50:51,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:50:51,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:50:51,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180462034] [2024-11-23 22:50:51,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180462034] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:50:51,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:50:51,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:50:51,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996334068] [2024-11-23 22:50:51,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:50:51,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:50:51,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:50:51,675 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:50:51,676 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:50:51,676 INFO L87 Difference]: Start difference. First operand 456 states and 735 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 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) [2024-11-23 22:50:51,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:50:51,726 INFO L93 Difference]: Finished difference Result 1172 states and 1911 transitions. [2024-11-23 22:50:51,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:50:51,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 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 [2024-11-23 22:50:51,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:50:51,731 INFO L225 Difference]: With dead ends: 1172 [2024-11-23 22:50:51,731 INFO L226 Difference]: Without dead ends: 793 [2024-11-23 22:50:51,732 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 [2024-11-23 22:50:51,733 INFO L435 NwaCegarLoop]: 203 mSDtfsCounter, 105 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:50:51,734 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 380 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:50:51,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2024-11-23 22:50:51,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 791. [2024-11-23 22:50:51,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 790 states have (on average 1.6164556962025316) internal successors, (1277), 790 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:50:51,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 1277 transitions. [2024-11-23 22:50:51,775 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 1277 transitions. Word has length 61 [2024-11-23 22:50:51,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:50:51,779 INFO L471 AbstractCegarLoop]: Abstraction has 791 states and 1277 transitions. [2024-11-23 22:50:51,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 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) [2024-11-23 22:50:51,780 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 1277 transitions. [2024-11-23 22:50:51,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-23 22:50:51,781 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:50:51,782 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:50:51,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 22:50:51,782 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:50:51,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:50:51,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1280827262, now seen corresponding path program 1 times [2024-11-23 22:50:51,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:50:51,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671289728] [2024-11-23 22:50:51,783 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:50:51,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:50:51,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:50:52,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:50:52,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:50:52,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671289728] [2024-11-23 22:50:52,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671289728] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:50:52,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:50:52,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 22:50:52,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040241054] [2024-11-23 22:50:52,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:50:52,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:50:52,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:50:52,075 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:50:52,075 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:50:52,075 INFO L87 Difference]: Start difference. First operand 791 states and 1277 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:50:52,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:50:52,413 INFO L93 Difference]: Finished difference Result 3568 states and 5888 transitions. [2024-11-23 22:50:52,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 22:50:52,414 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2024-11-23 22:50:52,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:50:52,430 INFO L225 Difference]: With dead ends: 3568 [2024-11-23 22:50:52,430 INFO L226 Difference]: Without dead ends: 2854 [2024-11-23 22:50:52,435 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-23 22:50:52,437 INFO L435 NwaCegarLoop]: 194 mSDtfsCounter, 881 mSDsluCounter, 1066 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 1260 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 22:50:52,438 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [881 Valid, 1260 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 22:50:52,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2854 states. [2024-11-23 22:50:52,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2854 to 1432. [2024-11-23 22:50:52,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1431 states have (on average 1.623340321453529) internal successors, (2323), 1431 states have internal predecessors, (2323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:50:52,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 2323 transitions. [2024-11-23 22:50:52,560 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 2323 transitions. Word has length 63 [2024-11-23 22:50:52,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:50:52,560 INFO L471 AbstractCegarLoop]: Abstraction has 1432 states and 2323 transitions. [2024-11-23 22:50:52,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:50:52,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 2323 transitions. [2024-11-23 22:50:52,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-23 22:50:52,562 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:50:52,562 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:50:52,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 22:50:52,563 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:50:52,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:50:52,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1113443658, now seen corresponding path program 1 times [2024-11-23 22:50:52,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:50:52,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824237118] [2024-11-23 22:50:52,564 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:50:52,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:50:52,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:50:52,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:50:52,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:50:52,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824237118] [2024-11-23 22:50:52,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824237118] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:50:52,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:50:52,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 22:50:52,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516546703] [2024-11-23 22:50:52,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:50:52,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:50:52,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:50:52,794 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:50:52,794 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:50:52,795 INFO L87 Difference]: Start difference. First operand 1432 states and 2323 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:50:52,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:50:52,938 INFO L93 Difference]: Finished difference Result 4199 states and 6910 transitions. [2024-11-23 22:50:52,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:50:52,939 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-23 22:50:52,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:50:52,950 INFO L225 Difference]: With dead ends: 4199 [2024-11-23 22:50:52,950 INFO L226 Difference]: Without dead ends: 2846 [2024-11-23 22:50:52,956 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:50:52,957 INFO L435 NwaCegarLoop]: 192 mSDtfsCounter, 379 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:50:52,957 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 607 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:50:52,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2846 states. [2024-11-23 22:50:53,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2846 to 2127. [2024-11-23 22:50:53,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2127 states, 2126 states have (on average 1.6302916274694261) internal successors, (3466), 2126 states have internal predecessors, (3466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:50:53,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2127 states to 2127 states and 3466 transitions. [2024-11-23 22:50:53,073 INFO L78 Accepts]: Start accepts. Automaton has 2127 states and 3466 transitions. Word has length 64 [2024-11-23 22:50:53,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:50:53,073 INFO L471 AbstractCegarLoop]: Abstraction has 2127 states and 3466 transitions. [2024-11-23 22:50:53,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:50:53,073 INFO L276 IsEmpty]: Start isEmpty. Operand 2127 states and 3466 transitions. [2024-11-23 22:50:53,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-23 22:50:53,076 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:50:53,076 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:50:53,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 22:50:53,076 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:50:53,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:50:53,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1248232611, now seen corresponding path program 1 times [2024-11-23 22:50:53,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:50:53,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228071780] [2024-11-23 22:50:53,078 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:50:53,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:50:53,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:50:53,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:50:53,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:50:53,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228071780] [2024-11-23 22:50:53,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228071780] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:50:53,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:50:53,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:50:53,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167332057] [2024-11-23 22:50:53,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:50:53,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:50:53,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:50:53,220 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:50:53,220 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:50:53,220 INFO L87 Difference]: Start difference. First operand 2127 states and 3466 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:50:53,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:50:53,279 INFO L93 Difference]: Finished difference Result 4121 states and 6752 transitions. [2024-11-23 22:50:53,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:50:53,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-23 22:50:53,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:50:53,294 INFO L225 Difference]: With dead ends: 4121 [2024-11-23 22:50:53,294 INFO L226 Difference]: Without dead ends: 2979 [2024-11-23 22:50:53,296 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 [2024-11-23 22:50:53,299 INFO L435 NwaCegarLoop]: 248 mSDtfsCounter, 106 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:50:53,300 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 426 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:50:53,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2979 states. [2024-11-23 22:50:53,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2979 to 2977. [2024-11-23 22:50:53,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2977 states, 2976 states have (on average 1.6256720430107527) internal successors, (4838), 2976 states have internal predecessors, (4838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:50:53,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2977 states to 2977 states and 4838 transitions. [2024-11-23 22:50:53,402 INFO L78 Accepts]: Start accepts. Automaton has 2977 states and 4838 transitions. Word has length 64 [2024-11-23 22:50:53,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:50:53,402 INFO L471 AbstractCegarLoop]: Abstraction has 2977 states and 4838 transitions. [2024-11-23 22:50:53,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:50:53,402 INFO L276 IsEmpty]: Start isEmpty. Operand 2977 states and 4838 transitions. [2024-11-23 22:50:53,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-23 22:50:53,403 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:50:53,404 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:50:53,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 22:50:53,404 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:50:53,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:50:53,405 INFO L85 PathProgramCache]: Analyzing trace with hash 616386787, now seen corresponding path program 1 times [2024-11-23 22:50:53,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:50:53,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192750612] [2024-11-23 22:50:53,406 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:50:53,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:50:53,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:50:53,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:50:53,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:50:53,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192750612] [2024-11-23 22:50:53,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192750612] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:50:53,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:50:53,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:50:53,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966006995] [2024-11-23 22:50:53,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:50:53,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:50:53,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:50:53,561 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:50:53,562 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:50:53,562 INFO L87 Difference]: Start difference. First operand 2977 states and 4838 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:50:53,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:50:53,643 INFO L93 Difference]: Finished difference Result 6399 states and 10550 transitions. [2024-11-23 22:50:53,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:50:53,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-23 22:50:53,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:50:53,666 INFO L225 Difference]: With dead ends: 6399 [2024-11-23 22:50:53,666 INFO L226 Difference]: Without dead ends: 4313 [2024-11-23 22:50:53,670 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 [2024-11-23 22:50:53,671 INFO L435 NwaCegarLoop]: 291 mSDtfsCounter, 116 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:50:53,671 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 467 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:50:53,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4313 states. [2024-11-23 22:50:53,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4313 to 4311. [2024-11-23 22:50:53,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4311 states, 4310 states have (on average 1.6331786542923434) internal successors, (7039), 4310 states have internal predecessors, (7039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:50:53,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4311 states to 4311 states and 7039 transitions. [2024-11-23 22:50:53,837 INFO L78 Accepts]: Start accepts. Automaton has 4311 states and 7039 transitions. Word has length 64 [2024-11-23 22:50:53,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:50:53,837 INFO L471 AbstractCegarLoop]: Abstraction has 4311 states and 7039 transitions. [2024-11-23 22:50:53,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:50:53,837 INFO L276 IsEmpty]: Start isEmpty. Operand 4311 states and 7039 transitions. [2024-11-23 22:50:53,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-23 22:50:53,838 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:50:53,838 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:50:53,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 22:50:53,839 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:50:53,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:50:53,840 INFO L85 PathProgramCache]: Analyzing trace with hash -214961207, now seen corresponding path program 1 times [2024-11-23 22:50:53,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:50:53,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579767107] [2024-11-23 22:50:53,841 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:50:53,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:50:53,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:50:54,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:50:54,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:50:54,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579767107] [2024-11-23 22:50:54,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579767107] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:50:54,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:50:54,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 22:50:54,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65515711] [2024-11-23 22:50:54,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:50:54,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:50:54,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:50:54,073 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:50:54,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:50:54,073 INFO L87 Difference]: Start difference. First operand 4311 states and 7039 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:50:54,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:50:54,330 INFO L93 Difference]: Finished difference Result 13702 states and 22482 transitions. [2024-11-23 22:50:54,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:50:54,333 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-23 22:50:54,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:50:54,389 INFO L225 Difference]: With dead ends: 13702 [2024-11-23 22:50:54,390 INFO L226 Difference]: Without dead ends: 9473 [2024-11-23 22:50:54,398 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:50:54,399 INFO L435 NwaCegarLoop]: 198 mSDtfsCounter, 377 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:50:54,401 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [377 Valid, 681 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:50:54,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9473 states. [2024-11-23 22:50:54,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9473 to 6863. [2024-11-23 22:50:54,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6863 states, 6862 states have (on average 1.6264937336053629) internal successors, (11161), 6862 states have internal predecessors, (11161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:50:54,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6863 states to 6863 states and 11161 transitions. [2024-11-23 22:50:54,639 INFO L78 Accepts]: Start accepts. Automaton has 6863 states and 11161 transitions. Word has length 65 [2024-11-23 22:50:54,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:50:54,639 INFO L471 AbstractCegarLoop]: Abstraction has 6863 states and 11161 transitions. [2024-11-23 22:50:54,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:50:54,639 INFO L276 IsEmpty]: Start isEmpty. Operand 6863 states and 11161 transitions. [2024-11-23 22:50:54,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-23 22:50:54,643 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:50:54,643 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:50:54,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 22:50:54,645 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:50:54,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:50:54,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1872749021, now seen corresponding path program 1 times [2024-11-23 22:50:54,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:50:54,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191993365] [2024-11-23 22:50:54,646 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:50:54,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:50:54,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:50:54,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:50:54,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:50:54,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191993365] [2024-11-23 22:50:54,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191993365] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:50:54,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:50:54,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 22:50:54,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359993416] [2024-11-23 22:50:54,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:50:54,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:50:54,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:50:54,832 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:50:54,832 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:50:54,833 INFO L87 Difference]: Start difference. First operand 6863 states and 11161 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 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) [2024-11-23 22:50:55,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:50:55,070 INFO L93 Difference]: Finished difference Result 21434 states and 34994 transitions. [2024-11-23 22:50:55,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:50:55,071 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-11-23 22:50:55,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:50:55,121 INFO L225 Difference]: With dead ends: 21434 [2024-11-23 22:50:55,121 INFO L226 Difference]: Without dead ends: 14653 [2024-11-23 22:50:55,132 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:50:55,133 INFO L435 NwaCegarLoop]: 192 mSDtfsCounter, 375 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:50:55,133 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 663 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:50:55,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14653 states. [2024-11-23 22:50:55,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14653 to 10715. [2024-11-23 22:50:55,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10715 states, 10714 states have (on average 1.6190965092402465) internal successors, (17347), 10714 states have internal predecessors, (17347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:50:55,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10715 states to 10715 states and 17347 transitions. [2024-11-23 22:50:55,521 INFO L78 Accepts]: Start accepts. Automaton has 10715 states and 17347 transitions. Word has length 66 [2024-11-23 22:50:55,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:50:55,521 INFO L471 AbstractCegarLoop]: Abstraction has 10715 states and 17347 transitions. [2024-11-23 22:50:55,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 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) [2024-11-23 22:50:55,522 INFO L276 IsEmpty]: Start isEmpty. Operand 10715 states and 17347 transitions. [2024-11-23 22:50:55,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-23 22:50:55,522 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:50:55,522 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:50:55,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 22:50:55,523 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:50:55,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:50:55,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1396799506, now seen corresponding path program 1 times [2024-11-23 22:50:55,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:50:55,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969996156] [2024-11-23 22:50:55,524 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:50:55,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:50:55,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:50:56,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:50:56,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:50:56,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969996156] [2024-11-23 22:50:56,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969996156] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:50:56,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:50:56,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 22:50:56,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471480646] [2024-11-23 22:50:56,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:50:56,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:50:56,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:50:56,017 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:50:56,017 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:50:56,017 INFO L87 Difference]: Start difference. First operand 10715 states and 17347 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:50:56,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:50:56,285 INFO L93 Difference]: Finished difference Result 21350 states and 34583 transitions. [2024-11-23 22:50:56,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:50:56,286 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-23 22:50:56,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:50:56,322 INFO L225 Difference]: With dead ends: 21350 [2024-11-23 22:50:56,323 INFO L226 Difference]: Without dead ends: 10717 [2024-11-23 22:50:56,337 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:50:56,338 INFO L435 NwaCegarLoop]: 197 mSDtfsCounter, 313 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:50:56,339 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 551 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:50:56,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10717 states. [2024-11-23 22:50:56,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10717 to 10715. [2024-11-23 22:50:56,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10715 states, 10714 states have (on average 1.607429531454172) internal successors, (17222), 10714 states have internal predecessors, (17222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:50:56,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10715 states to 10715 states and 17222 transitions. [2024-11-23 22:50:56,758 INFO L78 Accepts]: Start accepts. Automaton has 10715 states and 17222 transitions. Word has length 68 [2024-11-23 22:50:56,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:50:56,758 INFO L471 AbstractCegarLoop]: Abstraction has 10715 states and 17222 transitions. [2024-11-23 22:50:56,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:50:56,758 INFO L276 IsEmpty]: Start isEmpty. Operand 10715 states and 17222 transitions. [2024-11-23 22:50:56,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-23 22:50:56,759 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:50:56,759 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:50:56,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 22:50:56,760 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:50:56,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:50:56,762 INFO L85 PathProgramCache]: Analyzing trace with hash -164512453, now seen corresponding path program 1 times [2024-11-23 22:50:56,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:50:56,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300107637] [2024-11-23 22:50:56,762 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:50:56,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:50:56,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:50:57,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:50:57,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:50:57,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300107637] [2024-11-23 22:50:57,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300107637] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:50:57,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:50:57,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 22:50:57,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55454457] [2024-11-23 22:50:57,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:50:57,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:50:57,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:50:57,138 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:50:57,138 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:50:57,140 INFO L87 Difference]: Start difference. First operand 10715 states and 17222 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:50:57,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:50:57,435 INFO L93 Difference]: Finished difference Result 30660 states and 49437 transitions. [2024-11-23 22:50:57,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:50:57,436 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2024-11-23 22:50:57,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:50:57,494 INFO L225 Difference]: With dead ends: 30660 [2024-11-23 22:50:57,495 INFO L226 Difference]: Without dead ends: 20027 [2024-11-23 22:50:57,508 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:50:57,509 INFO L435 NwaCegarLoop]: 196 mSDtfsCounter, 205 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:50:57,509 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 560 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:50:57,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20027 states. [2024-11-23 22:50:57,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20027 to 20025. [2024-11-23 22:50:57,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20025 states, 20024 states have (on average 1.5949360767079506) internal successors, (31937), 20024 states have internal predecessors, (31937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:50:57,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20025 states to 20025 states and 31937 transitions. [2024-11-23 22:50:57,995 INFO L78 Accepts]: Start accepts. Automaton has 20025 states and 31937 transitions. Word has length 71 [2024-11-23 22:50:57,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:50:57,995 INFO L471 AbstractCegarLoop]: Abstraction has 20025 states and 31937 transitions. [2024-11-23 22:50:57,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:50:57,997 INFO L276 IsEmpty]: Start isEmpty. Operand 20025 states and 31937 transitions. [2024-11-23 22:50:57,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-23 22:50:57,999 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:50:57,999 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:50:57,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-23 22:50:58,000 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:50:58,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:50:58,001 INFO L85 PathProgramCache]: Analyzing trace with hash -806828053, now seen corresponding path program 1 times [2024-11-23 22:50:58,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:50:58,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437608826] [2024-11-23 22:50:58,001 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:50:58,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:50:58,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:50:58,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:50:58,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:50:58,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437608826] [2024-11-23 22:50:58,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437608826] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:50:58,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:50:58,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 22:50:58,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646268219] [2024-11-23 22:50:58,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:50:58,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:50:58,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:50:58,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:50:58,711 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:50:58,711 INFO L87 Difference]: Start difference. First operand 20025 states and 31937 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:50:58,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:50:58,888 INFO L93 Difference]: Finished difference Result 20751 states and 33024 transitions. [2024-11-23 22:50:58,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:50:58,889 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2024-11-23 22:50:58,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:50:58,947 INFO L225 Difference]: With dead ends: 20751 [2024-11-23 22:50:58,947 INFO L226 Difference]: Without dead ends: 20749 [2024-11-23 22:50:58,955 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:50:58,956 INFO L435 NwaCegarLoop]: 201 mSDtfsCounter, 0 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:50:58,957 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 787 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:50:58,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20749 states. [2024-11-23 22:50:59,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20749 to 20749. [2024-11-23 22:50:59,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20749 states, 20748 states have (on average 1.573742047426258) internal successors, (32652), 20748 states have internal predecessors, (32652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:50:59,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20749 states to 20749 states and 32652 transitions. [2024-11-23 22:50:59,398 INFO L78 Accepts]: Start accepts. Automaton has 20749 states and 32652 transitions. Word has length 72 [2024-11-23 22:50:59,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:50:59,399 INFO L471 AbstractCegarLoop]: Abstraction has 20749 states and 32652 transitions. [2024-11-23 22:50:59,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:50:59,400 INFO L276 IsEmpty]: Start isEmpty. Operand 20749 states and 32652 transitions. [2024-11-23 22:50:59,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-23 22:50:59,403 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:50:59,403 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:50:59,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-23 22:50:59,404 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:50:59,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:50:59,405 INFO L85 PathProgramCache]: Analyzing trace with hash 25494517, now seen corresponding path program 1 times [2024-11-23 22:50:59,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:50:59,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032308084] [2024-11-23 22:50:59,406 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:50:59,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:50:59,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:50:59,744 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-23 22:50:59,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:50:59,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032308084] [2024-11-23 22:50:59,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032308084] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:50:59,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:50:59,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 22:50:59,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846635647] [2024-11-23 22:50:59,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:50:59,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:50:59,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:50:59,746 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:50:59,746 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:50:59,747 INFO L87 Difference]: Start difference. First operand 20749 states and 32652 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:51:00,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:51:00,195 INFO L93 Difference]: Finished difference Result 50557 states and 79854 transitions. [2024-11-23 22:51:00,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:51:00,196 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2024-11-23 22:51:00,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:51:00,321 INFO L225 Difference]: With dead ends: 50557 [2024-11-23 22:51:00,321 INFO L226 Difference]: Without dead ends: 40765 [2024-11-23 22:51:00,341 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:51:00,342 INFO L435 NwaCegarLoop]: 318 mSDtfsCounter, 479 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:51:00,343 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 936 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:51:00,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40765 states. [2024-11-23 22:51:00,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40765 to 31835. [2024-11-23 22:51:00,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31835 states, 31834 states have (on average 1.572532512408117) internal successors, (50060), 31834 states have internal predecessors, (50060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:51:01,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31835 states to 31835 states and 50060 transitions. [2024-11-23 22:51:01,389 INFO L78 Accepts]: Start accepts. Automaton has 31835 states and 50060 transitions. Word has length 93 [2024-11-23 22:51:01,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:51:01,390 INFO L471 AbstractCegarLoop]: Abstraction has 31835 states and 50060 transitions. [2024-11-23 22:51:01,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:51:01,391 INFO L276 IsEmpty]: Start isEmpty. Operand 31835 states and 50060 transitions. [2024-11-23 22:51:01,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-23 22:51:01,394 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:51:01,394 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:51:01,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-23 22:51:01,395 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:51:01,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:51:01,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1396393528, now seen corresponding path program 1 times [2024-11-23 22:51:01,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:51:01,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145847304] [2024-11-23 22:51:01,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:51:01,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:51:01,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:51:01,703 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-23 22:51:01,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:51:01,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145847304] [2024-11-23 22:51:01,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145847304] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:51:01,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:51:01,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 22:51:01,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169351950] [2024-11-23 22:51:01,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:51:01,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:51:01,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:51:01,706 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:51:01,706 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:51:01,706 INFO L87 Difference]: Start difference. First operand 31835 states and 50060 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:51:02,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:51:02,166 INFO L93 Difference]: Finished difference Result 54449 states and 86018 transitions. [2024-11-23 22:51:02,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:51:02,167 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2024-11-23 22:51:02,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:51:02,265 INFO L225 Difference]: With dead ends: 54449 [2024-11-23 22:51:02,265 INFO L226 Difference]: Without dead ends: 44657 [2024-11-23 22:51:02,277 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:51:02,277 INFO L435 NwaCegarLoop]: 326 mSDtfsCounter, 478 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:51:02,281 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 872 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:51:02,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44657 states. [2024-11-23 22:51:02,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44657 to 43067. [2024-11-23 22:51:02,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43067 states, 43066 states have (on average 1.573445409371662) internal successors, (67762), 43066 states have internal predecessors, (67762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:51:03,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43067 states to 43067 states and 67762 transitions. [2024-11-23 22:51:03,059 INFO L78 Accepts]: Start accepts. Automaton has 43067 states and 67762 transitions. Word has length 93 [2024-11-23 22:51:03,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:51:03,059 INFO L471 AbstractCegarLoop]: Abstraction has 43067 states and 67762 transitions. [2024-11-23 22:51:03,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:51:03,060 INFO L276 IsEmpty]: Start isEmpty. Operand 43067 states and 67762 transitions. [2024-11-23 22:51:03,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-23 22:51:03,063 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:51:03,063 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:51:03,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-23 22:51:03,064 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:51:03,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:51:03,065 INFO L85 PathProgramCache]: Analyzing trace with hash 71809854, now seen corresponding path program 1 times [2024-11-23 22:51:03,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:51:03,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964590161] [2024-11-23 22:51:03,065 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:51:03,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:51:03,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:51:03,594 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 22:51:03,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:51:03,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964590161] [2024-11-23 22:51:03,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964590161] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:51:03,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:51:03,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 22:51:03,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856672527] [2024-11-23 22:51:03,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:51:03,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:51:03,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:51:03,599 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:51:03,599 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:51:03,599 INFO L87 Difference]: Start difference. First operand 43067 states and 67762 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:51:04,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:51:04,021 INFO L93 Difference]: Finished difference Result 61063 states and 96646 transitions. [2024-11-23 22:51:04,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:51:04,022 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2024-11-23 22:51:04,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:51:04,139 INFO L225 Difference]: With dead ends: 61063 [2024-11-23 22:51:04,140 INFO L226 Difference]: Without dead ends: 51041 [2024-11-23 22:51:04,166 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:51:04,167 INFO L435 NwaCegarLoop]: 323 mSDtfsCounter, 476 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:51:04,167 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 985 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:51:04,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51041 states. [2024-11-23 22:51:05,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51041 to 49451. [2024-11-23 22:51:05,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49451 states, 49450 states have (on average 1.5763397371081902) internal successors, (77950), 49450 states have internal predecessors, (77950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:51:05,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49451 states to 49451 states and 77950 transitions. [2024-11-23 22:51:05,206 INFO L78 Accepts]: Start accepts. Automaton has 49451 states and 77950 transitions. Word has length 93 [2024-11-23 22:51:05,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:51:05,207 INFO L471 AbstractCegarLoop]: Abstraction has 49451 states and 77950 transitions. [2024-11-23 22:51:05,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:51:05,207 INFO L276 IsEmpty]: Start isEmpty. Operand 49451 states and 77950 transitions. [2024-11-23 22:51:05,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-23 22:51:05,210 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:51:05,211 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:51:05,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-23 22:51:05,211 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:51:05,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:51:05,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1205465200, now seen corresponding path program 1 times [2024-11-23 22:51:05,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:51:05,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357219693] [2024-11-23 22:51:05,212 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:51:05,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:51:05,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:51:05,424 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:51:05,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:51:05,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357219693] [2024-11-23 22:51:05,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357219693] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:51:05,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:51:05,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:51:05,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294231624] [2024-11-23 22:51:05,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:51:05,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:51:05,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:51:05,427 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:51:05,427 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:51:05,427 INFO L87 Difference]: Start difference. First operand 49451 states and 77950 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:51:05,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:51:05,898 INFO L93 Difference]: Finished difference Result 92380 states and 146099 transitions. [2024-11-23 22:51:05,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:51:05,898 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2024-11-23 22:51:05,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:51:05,983 INFO L225 Difference]: With dead ends: 92380 [2024-11-23 22:51:05,983 INFO L226 Difference]: Without dead ends: 43011 [2024-11-23 22:51:06,016 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 [2024-11-23 22:51:06,017 INFO L435 NwaCegarLoop]: 248 mSDtfsCounter, 87 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 22:51:06,017 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 433 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 22:51:06,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43011 states. [2024-11-23 22:51:06,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43011 to 43005. [2024-11-23 22:51:06,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43005 states, 43004 states have (on average 1.5771556134313087) internal successors, (67824), 43004 states have internal predecessors, (67824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:51:07,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43005 states to 43005 states and 67824 transitions. [2024-11-23 22:51:07,027 INFO L78 Accepts]: Start accepts. Automaton has 43005 states and 67824 transitions. Word has length 94 [2024-11-23 22:51:07,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:51:07,027 INFO L471 AbstractCegarLoop]: Abstraction has 43005 states and 67824 transitions. [2024-11-23 22:51:07,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:51:07,028 INFO L276 IsEmpty]: Start isEmpty. Operand 43005 states and 67824 transitions. [2024-11-23 22:51:07,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-23 22:51:07,030 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:51:07,031 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:51:07,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-23 22:51:07,031 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:51:07,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:51:07,032 INFO L85 PathProgramCache]: Analyzing trace with hash -209592631, now seen corresponding path program 1 times [2024-11-23 22:51:07,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:51:07,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117006553] [2024-11-23 22:51:07,032 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:51:07,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:51:07,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:51:07,656 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 22:51:07,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:51:07,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117006553] [2024-11-23 22:51:07,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117006553] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:51:07,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:51:07,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 22:51:07,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111372353] [2024-11-23 22:51:07,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:51:07,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:51:07,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:51:07,658 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:51:07,659 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:51:07,659 INFO L87 Difference]: Start difference. First operand 43005 states and 67824 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:51:08,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:51:08,443 INFO L93 Difference]: Finished difference Result 102019 states and 161793 transitions. [2024-11-23 22:51:08,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:51:08,445 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2024-11-23 22:51:08,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:51:08,589 INFO L225 Difference]: With dead ends: 102019 [2024-11-23 22:51:08,589 INFO L226 Difference]: Without dead ends: 77437 [2024-11-23 22:51:08,623 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:51:08,625 INFO L435 NwaCegarLoop]: 202 mSDtfsCounter, 405 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:51:08,625 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 538 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:51:08,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77437 states. [2024-11-23 22:51:09,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77437 to 67003. [2024-11-23 22:51:09,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67003 states, 67002 states have (on average 1.5803707352019343) internal successors, (105888), 67002 states have internal predecessors, (105888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:51:10,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67003 states to 67003 states and 105888 transitions. [2024-11-23 22:51:10,044 INFO L78 Accepts]: Start accepts. Automaton has 67003 states and 105888 transitions. Word has length 94 [2024-11-23 22:51:10,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:51:10,044 INFO L471 AbstractCegarLoop]: Abstraction has 67003 states and 105888 transitions. [2024-11-23 22:51:10,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:51:10,044 INFO L276 IsEmpty]: Start isEmpty. Operand 67003 states and 105888 transitions. [2024-11-23 22:51:10,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-23 22:51:10,046 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:51:10,046 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:51:10,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-23 22:51:10,046 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:51:10,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:51:10,047 INFO L85 PathProgramCache]: Analyzing trace with hash 2003616192, now seen corresponding path program 1 times [2024-11-23 22:51:10,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:51:10,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273456837] [2024-11-23 22:51:10,047 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:51:10,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:51:10,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:51:10,168 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 22:51:10,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:51:10,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273456837] [2024-11-23 22:51:10,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273456837] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:51:10,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:51:10,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:51:10,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468803771] [2024-11-23 22:51:10,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:51:10,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:51:10,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:51:10,171 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:51:10,171 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:51:10,171 INFO L87 Difference]: Start difference. First operand 67003 states and 105888 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:51:11,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:51:11,162 INFO L93 Difference]: Finished difference Result 158352 states and 250596 transitions. [2024-11-23 22:51:11,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:51:11,163 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2024-11-23 22:51:11,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:51:11,389 INFO L225 Difference]: With dead ends: 158352 [2024-11-23 22:51:11,390 INFO L226 Difference]: Without dead ends: 113752 [2024-11-23 22:51:11,431 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 [2024-11-23 22:51:11,432 INFO L435 NwaCegarLoop]: 193 mSDtfsCounter, 96 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:51:11,432 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 367 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:51:11,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113752 states. [2024-11-23 22:51:13,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113752 to 113431. [2024-11-23 22:51:13,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113431 states, 113430 states have (on average 1.5783478797496253) internal successors, (179032), 113430 states have internal predecessors, (179032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:51:13,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113431 states to 113431 states and 179032 transitions. [2024-11-23 22:51:13,994 INFO L78 Accepts]: Start accepts. Automaton has 113431 states and 179032 transitions. Word has length 94 [2024-11-23 22:51:13,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:51:13,995 INFO L471 AbstractCegarLoop]: Abstraction has 113431 states and 179032 transitions. [2024-11-23 22:51:13,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:51:13,995 INFO L276 IsEmpty]: Start isEmpty. Operand 113431 states and 179032 transitions. [2024-11-23 22:51:13,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-23 22:51:13,998 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:51:13,999 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:51:13,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-23 22:51:14,000 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:51:14,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:51:14,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1140588764, now seen corresponding path program 1 times [2024-11-23 22:51:14,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:51:14,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655399839] [2024-11-23 22:51:14,001 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:51:14,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:51:14,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:51:14,749 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:51:14,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:51:14,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655399839] [2024-11-23 22:51:14,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655399839] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:51:14,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:51:14,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:51:14,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327359016] [2024-11-23 22:51:14,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:51:14,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:51:14,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:51:14,752 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:51:14,752 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:51:14,752 INFO L87 Difference]: Start difference. First operand 113431 states and 179032 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:51:15,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:51:15,255 INFO L93 Difference]: Finished difference Result 164375 states and 259543 transitions. [2024-11-23 22:51:15,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:51:15,256 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2024-11-23 22:51:15,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:51:15,365 INFO L225 Difference]: With dead ends: 164375 [2024-11-23 22:51:15,365 INFO L226 Difference]: Without dead ends: 51049 [2024-11-23 22:51:15,430 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 [2024-11-23 22:51:15,435 INFO L435 NwaCegarLoop]: 240 mSDtfsCounter, 65 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:51:15,435 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 411 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:51:15,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51049 states. [2024-11-23 22:51:16,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51049 to 51047. [2024-11-23 22:51:16,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51047 states, 51046 states have (on average 1.5693883947811778) internal successors, (80111), 51046 states have internal predecessors, (80111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:51:16,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51047 states to 51047 states and 80111 transitions. [2024-11-23 22:51:16,616 INFO L78 Accepts]: Start accepts. Automaton has 51047 states and 80111 transitions. Word has length 94 [2024-11-23 22:51:16,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:51:16,616 INFO L471 AbstractCegarLoop]: Abstraction has 51047 states and 80111 transitions. [2024-11-23 22:51:16,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:51:16,617 INFO L276 IsEmpty]: Start isEmpty. Operand 51047 states and 80111 transitions. [2024-11-23 22:51:16,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-23 22:51:16,618 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:51:16,618 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:51:16,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-23 22:51:16,619 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:51:16,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:51:16,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1305716613, now seen corresponding path program 1 times [2024-11-23 22:51:16,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:51:16,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735586747] [2024-11-23 22:51:16,620 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:51:16,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:51:16,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:51:17,012 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 22:51:17,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:51:17,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735586747] [2024-11-23 22:51:17,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735586747] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:51:17,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:51:17,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 22:51:17,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015068174] [2024-11-23 22:51:17,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:51:17,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:51:17,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:51:17,014 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:51:17,015 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:51:17,015 INFO L87 Difference]: Start difference. First operand 51047 states and 80111 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:51:17,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:51:17,427 INFO L93 Difference]: Finished difference Result 115837 states and 182824 transitions. [2024-11-23 22:51:17,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:51:17,428 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2024-11-23 22:51:17,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:51:17,630 INFO L225 Difference]: With dead ends: 115837 [2024-11-23 22:51:17,631 INFO L226 Difference]: Without dead ends: 88419 [2024-11-23 22:51:17,670 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:51:17,672 INFO L435 NwaCegarLoop]: 238 mSDtfsCounter, 380 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:51:17,672 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 572 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:51:17,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88419 states. [2024-11-23 22:51:19,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88419 to 76867. [2024-11-23 22:51:19,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76867 states, 76866 states have (on average 1.5722556136653396) internal successors, (120853), 76866 states have internal predecessors, (120853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:51:19,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76867 states to 76867 states and 120853 transitions. [2024-11-23 22:51:19,293 INFO L78 Accepts]: Start accepts. Automaton has 76867 states and 120853 transitions. Word has length 94 [2024-11-23 22:51:19,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:51:19,293 INFO L471 AbstractCegarLoop]: Abstraction has 76867 states and 120853 transitions. [2024-11-23 22:51:19,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:51:19,293 INFO L276 IsEmpty]: Start isEmpty. Operand 76867 states and 120853 transitions. [2024-11-23 22:51:19,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-23 22:51:19,295 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:51:19,295 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:51:19,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-23 22:51:19,295 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:51:19,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:51:19,296 INFO L85 PathProgramCache]: Analyzing trace with hash 689656633, now seen corresponding path program 1 times [2024-11-23 22:51:19,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:51:19,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633294495] [2024-11-23 22:51:19,297 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:51:19,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:51:19,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:51:19,897 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 22:51:19,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:51:19,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633294495] [2024-11-23 22:51:19,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633294495] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:51:19,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:51:19,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 22:51:19,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162779878] [2024-11-23 22:51:19,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:51:19,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:51:19,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:51:19,898 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:51:19,898 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:51:19,899 INFO L87 Difference]: Start difference. First operand 76867 states and 120853 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:51:20,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:51:20,572 INFO L93 Difference]: Finished difference Result 135698 states and 213974 transitions. [2024-11-23 22:51:20,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:51:20,573 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2024-11-23 22:51:20,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:51:20,819 INFO L225 Difference]: With dead ends: 135698 [2024-11-23 22:51:20,819 INFO L226 Difference]: Without dead ends: 105796 [2024-11-23 22:51:20,873 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:51:20,878 INFO L435 NwaCegarLoop]: 324 mSDtfsCounter, 212 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:51:20,878 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 711 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:51:20,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105796 states. [2024-11-23 22:51:22,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105796 to 99671. [2024-11-23 22:51:22,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99671 states, 99670 states have (on average 1.5700411357479682) internal successors, (156486), 99670 states have internal predecessors, (156486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:51:22,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99671 states to 99671 states and 156486 transitions. [2024-11-23 22:51:22,722 INFO L78 Accepts]: Start accepts. Automaton has 99671 states and 156486 transitions. Word has length 94 [2024-11-23 22:51:22,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:51:22,722 INFO L471 AbstractCegarLoop]: Abstraction has 99671 states and 156486 transitions. [2024-11-23 22:51:22,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:51:22,723 INFO L276 IsEmpty]: Start isEmpty. Operand 99671 states and 156486 transitions. [2024-11-23 22:51:22,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-23 22:51:22,724 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:51:22,724 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:51:22,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-23 22:51:22,725 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:51:22,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:51:22,725 INFO L85 PathProgramCache]: Analyzing trace with hash 936937837, now seen corresponding path program 1 times [2024-11-23 22:51:22,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:51:22,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233190204] [2024-11-23 22:51:22,725 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:51:22,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:51:22,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:51:22,821 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:51:22,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:51:22,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233190204] [2024-11-23 22:51:22,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233190204] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:51:22,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:51:22,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:51:22,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129450541] [2024-11-23 22:51:22,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:51:22,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:51:22,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:51:22,823 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:51:22,823 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:51:22,824 INFO L87 Difference]: Start difference. First operand 99671 states and 156486 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:51:24,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:51:24,379 INFO L93 Difference]: Finished difference Result 293954 states and 461355 transitions. [2024-11-23 22:51:24,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:51:24,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2024-11-23 22:51:24,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:51:24,676 INFO L225 Difference]: With dead ends: 293954 [2024-11-23 22:51:24,677 INFO L226 Difference]: Without dead ends: 194367 [2024-11-23 22:51:24,724 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 [2024-11-23 22:51:24,724 INFO L435 NwaCegarLoop]: 294 mSDtfsCounter, 153 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:51:24,725 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 490 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:51:24,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194367 states. [2024-11-23 22:51:27,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194367 to 194365. [2024-11-23 22:51:27,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194365 states, 194364 states have (on average 1.5587145767734765) internal successors, (302958), 194364 states have internal predecessors, (302958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:51:27,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194365 states to 194365 states and 302958 transitions. [2024-11-23 22:51:27,847 INFO L78 Accepts]: Start accepts. Automaton has 194365 states and 302958 transitions. Word has length 95 [2024-11-23 22:51:27,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:51:27,847 INFO L471 AbstractCegarLoop]: Abstraction has 194365 states and 302958 transitions. [2024-11-23 22:51:27,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:51:27,847 INFO L276 IsEmpty]: Start isEmpty. Operand 194365 states and 302958 transitions. [2024-11-23 22:51:27,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-23 22:51:27,849 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:51:27,849 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:51:27,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-23 22:51:27,849 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:51:27,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:51:27,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1845821687, now seen corresponding path program 1 times [2024-11-23 22:51:27,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:51:27,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836948779] [2024-11-23 22:51:27,851 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:51:27,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:51:27,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:51:27,979 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:51:27,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:51:27,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836948779] [2024-11-23 22:51:27,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836948779] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:51:27,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:51:27,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:51:27,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349406382] [2024-11-23 22:51:27,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:51:27,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:51:27,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:51:27,981 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:51:27,981 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:51:27,982 INFO L87 Difference]: Start difference. First operand 194365 states and 302958 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:51:30,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:51:30,601 INFO L93 Difference]: Finished difference Result 571490 states and 890433 transitions. [2024-11-23 22:51:30,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:51:30,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2024-11-23 22:51:30,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:51:31,176 INFO L225 Difference]: With dead ends: 571490 [2024-11-23 22:51:31,176 INFO L226 Difference]: Without dead ends: 377254 [2024-11-23 22:51:31,301 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 [2024-11-23 22:51:31,301 INFO L435 NwaCegarLoop]: 261 mSDtfsCounter, 135 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:51:31,301 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 457 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:51:31,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377254 states. [2024-11-23 22:51:37,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377254 to 377252. [2024-11-23 22:51:37,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377252 states, 377251 states have (on average 1.5459892750449966) internal successors, (583226), 377251 states have internal predecessors, (583226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:51:38,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377252 states to 377252 states and 583226 transitions. [2024-11-23 22:51:38,203 INFO L78 Accepts]: Start accepts. Automaton has 377252 states and 583226 transitions. Word has length 95 [2024-11-23 22:51:38,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:51:38,203 INFO L471 AbstractCegarLoop]: Abstraction has 377252 states and 583226 transitions. [2024-11-23 22:51:38,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:51:38,203 INFO L276 IsEmpty]: Start isEmpty. Operand 377252 states and 583226 transitions. [2024-11-23 22:51:38,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-23 22:51:38,209 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:51:38,209 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:51:38,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-23 22:51:38,209 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:51:38,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:51:38,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1385537563, now seen corresponding path program 1 times [2024-11-23 22:51:38,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:51:38,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006513412] [2024-11-23 22:51:38,210 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:51:38,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:51:38,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:51:38,425 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 22:51:38,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:51:38,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006513412] [2024-11-23 22:51:38,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006513412] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:51:38,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:51:38,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 22:51:38,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299403644] [2024-11-23 22:51:38,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:51:38,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:51:38,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:51:38,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:51:38,431 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:51:38,431 INFO L87 Difference]: Start difference. First operand 377252 states and 583226 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)