./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem19_label07.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_e25ba456-ae48-4a60-b5d3-029a93060f08/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e25ba456-ae48-4a60-b5d3-029a93060f08/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_e25ba456-ae48-4a60-b5d3-029a93060f08/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e25ba456-ae48-4a60-b5d3-029a93060f08/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem19_label07.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e25ba456-ae48-4a60-b5d3-029a93060f08/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_e25ba456-ae48-4a60-b5d3-029a93060f08/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 2043c9d5e1443059c92e4f987d5fa7d95d911c8e5885f3f6e6b42c76d53791e0 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:17:27,218 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:17:27,318 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e25ba456-ae48-4a60-b5d3-029a93060f08/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 00:17:27,324 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:17:27,324 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:17:27,359 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:17:27,361 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:17:27,361 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:17:27,362 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:17:27,362 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:17:27,363 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:17:27,363 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:17:27,364 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:17:27,364 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:17:27,364 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:17:27,365 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:17:27,365 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:17:27,365 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 00:17:27,365 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:17:27,366 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 00:17:27,366 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:17:27,366 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:17:27,366 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:17:27,366 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:17:27,366 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 00:17:27,367 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:17:27,367 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:17:27,367 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:17:27,367 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:17:27,367 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:17:27,367 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:17:27,367 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:17:27,368 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:17:27,368 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:17:27,368 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:17:27,369 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:17:27,369 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:17:27,369 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:17:27,369 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:17:27,369 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:17:27,369 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:17:27,369 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:17:27,369 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:17:27,369 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:17:27,370 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:17:27,370 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:17:27,370 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:17:27,370 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:17:27,370 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_e25ba456-ae48-4a60-b5d3-029a93060f08/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 -> 2043c9d5e1443059c92e4f987d5fa7d95d911c8e5885f3f6e6b42c76d53791e0 [2024-11-24 00:17:27,657 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:17:27,671 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:17:27,675 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:17:27,677 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:17:27,677 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:17:27,680 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e25ba456-ae48-4a60-b5d3-029a93060f08/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/eca-rers2012/Problem19_label07.c [2024-11-24 00:17:30,757 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e25ba456-ae48-4a60-b5d3-029a93060f08/bin/uautomizer-verify-LYvppIcaGC/data/e85cd2f36/0cffae0ec4f94d3096553921ffe07e24/FLAGbaff05f56 [2024-11-24 00:17:31,595 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:17:31,596 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e25ba456-ae48-4a60-b5d3-029a93060f08/sv-benchmarks/c/eca-rers2012/Problem19_label07.c [2024-11-24 00:17:31,645 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e25ba456-ae48-4a60-b5d3-029a93060f08/bin/uautomizer-verify-LYvppIcaGC/data/e85cd2f36/0cffae0ec4f94d3096553921ffe07e24/FLAGbaff05f56 [2024-11-24 00:17:31,666 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e25ba456-ae48-4a60-b5d3-029a93060f08/bin/uautomizer-verify-LYvppIcaGC/data/e85cd2f36/0cffae0ec4f94d3096553921ffe07e24 [2024-11-24 00:17:31,669 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:17:31,671 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:17:31,673 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:17:31,673 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:17:31,678 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:17:31,680 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:17:31" (1/1) ... [2024-11-24 00:17:31,682 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cb7ce0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:31, skipping insertion in model container [2024-11-24 00:17:31,682 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:17:31" (1/1) ... [2024-11-24 00:17:31,898 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:17:32,332 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_e25ba456-ae48-4a60-b5d3-029a93060f08/sv-benchmarks/c/eca-rers2012/Problem19_label07.c[7920,7933] [2024-11-24 00:17:33,941 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:17:33,962 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:17:34,007 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_e25ba456-ae48-4a60-b5d3-029a93060f08/sv-benchmarks/c/eca-rers2012/Problem19_label07.c[7920,7933] [2024-11-24 00:17:35,172 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:17:35,232 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:17:35,235 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:35 WrapperNode [2024-11-24 00:17:35,236 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:17:35,238 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:17:35,238 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:17:35,238 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:17:35,251 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:35" (1/1) ... [2024-11-24 00:17:35,369 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:35" (1/1) ... [2024-11-24 00:17:36,412 INFO L138 Inliner]: procedures = 19, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 9430 [2024-11-24 00:17:36,413 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:17:36,415 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:17:36,415 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:17:36,415 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:17:36,425 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:35" (1/1) ... [2024-11-24 00:17:36,426 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:35" (1/1) ... [2024-11-24 00:17:36,617 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:35" (1/1) ... [2024-11-24 00:17:37,009 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]. [2024-11-24 00:17:37,010 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:35" (1/1) ... [2024-11-24 00:17:37,010 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:35" (1/1) ... [2024-11-24 00:17:37,542 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:35" (1/1) ... [2024-11-24 00:17:37,610 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:35" (1/1) ... [2024-11-24 00:17:37,682 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:35" (1/1) ... [2024-11-24 00:17:37,766 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:35" (1/1) ... [2024-11-24 00:17:37,814 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:35" (1/1) ... [2024-11-24 00:17:38,045 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:17:38,046 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:17:38,047 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:17:38,047 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:17:38,049 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:35" (1/1) ... [2024-11-24 00:17:38,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:17:38,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e25ba456-ae48-4a60-b5d3-029a93060f08/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:17:38,124 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e25ba456-ae48-4a60-b5d3-029a93060f08/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:17:38,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e25ba456-ae48-4a60-b5d3-029a93060f08/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:17:38,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:17:38,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 00:17:38,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:17:38,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:17:38,399 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:17:38,401 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:17:49,946 INFO L? ?]: Removed 1320 outVars from TransFormulas that were not future-live. [2024-11-24 00:17:49,947 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:17:50,060 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:17:50,060 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-24 00:17:50,061 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:17:50 BoogieIcfgContainer [2024-11-24 00:17:50,063 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:17:50,066 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:17:50,066 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:17:50,074 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:17:50,074 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:17:31" (1/3) ... [2024-11-24 00:17:50,076 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e65ec13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:17:50, skipping insertion in model container [2024-11-24 00:17:50,076 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:35" (2/3) ... [2024-11-24 00:17:50,077 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e65ec13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:17:50, skipping insertion in model container [2024-11-24 00:17:50,078 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:17:50" (3/3) ... [2024-11-24 00:17:50,079 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem19_label07.c [2024-11-24 00:17:50,096 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:17:50,098 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem19_label07.c that has 1 procedures, 1748 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 00:17:50,262 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:17:50,281 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;@11a70f80, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:17:50,281 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 00:17:50,295 INFO L276 IsEmpty]: Start isEmpty. Operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:17:50,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-24 00:17:50,305 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:17:50,306 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] [2024-11-24 00:17:50,307 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:17:50,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:17:50,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1818267785, now seen corresponding path program 1 times [2024-11-24 00:17:50,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:17:50,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409728435] [2024-11-24 00:17:50,323 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:50,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:17:50,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:51,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:17:51,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:17:51,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409728435] [2024-11-24 00:17:51,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409728435] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:17:51,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:17:51,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:17:51,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92169905] [2024-11-24 00:17:51,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:17:51,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:17:51,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:17:51,206 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:17:51,208 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:17:51,217 INFO L87 Difference]: Start difference. First operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 0 states have call successors, (0), 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 4 states, 4 states have (on average 15.25) 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) [2024-11-24 00:18:09,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:18:09,027 INFO L93 Difference]: Finished difference Result 6284 states and 12039 transitions. [2024-11-24 00:18:09,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:18:09,029 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) 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 [2024-11-24 00:18:09,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:18:09,073 INFO L225 Difference]: With dead ends: 6284 [2024-11-24 00:18:09,074 INFO L226 Difference]: Without dead ends: 4467 [2024-11-24 00:18:09,085 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:18:09,089 INFO L435 NwaCegarLoop]: 1812 mSDtfsCounter, 4219 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 10828 mSolverCounterSat, 2355 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4219 SdHoareTripleChecker+Valid, 2090 SdHoareTripleChecker+Invalid, 13183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2355 IncrementalHoareTripleChecker+Valid, 10828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:18:09,090 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4219 Valid, 2090 Invalid, 13183 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2355 Valid, 10828 Invalid, 0 Unknown, 0 Unchecked, 17.1s Time] [2024-11-24 00:18:09,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4467 states. [2024-11-24 00:18:09,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4467 to 4465. [2024-11-24 00:18:09,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4465 states, 4464 states have (on average 1.564516129032258) internal successors, (6984), 4464 states have internal predecessors, (6984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:09,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4465 states to 4465 states and 6984 transitions. [2024-11-24 00:18:09,350 INFO L78 Accepts]: Start accepts. Automaton has 4465 states and 6984 transitions. Word has length 61 [2024-11-24 00:18:09,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:18:09,351 INFO L471 AbstractCegarLoop]: Abstraction has 4465 states and 6984 transitions. [2024-11-24 00:18:09,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) 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) [2024-11-24 00:18:09,351 INFO L276 IsEmpty]: Start isEmpty. Operand 4465 states and 6984 transitions. [2024-11-24 00:18:09,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2024-11-24 00:18:09,361 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:18:09,362 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:18:09,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 00:18:09,363 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:18:09,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:18:09,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1440280171, now seen corresponding path program 1 times [2024-11-24 00:18:09,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:18:09,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304404081] [2024-11-24 00:18:09,365 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:09,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:18:09,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:11,533 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:18:11,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:18:11,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304404081] [2024-11-24 00:18:11,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304404081] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:18:11,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:18:11,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:18:11,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709786482] [2024-11-24 00:18:11,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:18:11,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:18:11,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:18:11,545 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:18:11,545 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:18:11,546 INFO L87 Difference]: Start difference. First operand 4465 states and 6984 transitions. Second operand has 4 states, 4 states have (on average 67.0) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:26,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:18:26,451 INFO L93 Difference]: Finished difference Result 11706 states and 20175 transitions. [2024-11-24 00:18:26,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:18:26,452 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 67.0) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 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 268 [2024-11-24 00:18:26,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:18:26,488 INFO L225 Difference]: With dead ends: 11706 [2024-11-24 00:18:26,488 INFO L226 Difference]: Without dead ends: 8608 [2024-11-24 00:18:26,492 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:18:26,493 INFO L435 NwaCegarLoop]: 1803 mSDtfsCounter, 3756 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 9455 mSolverCounterSat, 1337 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3756 SdHoareTripleChecker+Valid, 2157 SdHoareTripleChecker+Invalid, 10792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1337 IncrementalHoareTripleChecker+Valid, 9455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:18:26,494 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3756 Valid, 2157 Invalid, 10792 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1337 Valid, 9455 Invalid, 0 Unknown, 0 Unchecked, 14.4s Time] [2024-11-24 00:18:26,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8608 states. [2024-11-24 00:18:26,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8608 to 8594. [2024-11-24 00:18:26,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8594 states, 8593 states have (on average 1.3480740137321074) internal successors, (11584), 8593 states have internal predecessors, (11584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:26,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8594 states to 8594 states and 11584 transitions. [2024-11-24 00:18:26,695 INFO L78 Accepts]: Start accepts. Automaton has 8594 states and 11584 transitions. Word has length 268 [2024-11-24 00:18:26,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:18:26,696 INFO L471 AbstractCegarLoop]: Abstraction has 8594 states and 11584 transitions. [2024-11-24 00:18:26,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.0) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:26,697 INFO L276 IsEmpty]: Start isEmpty. Operand 8594 states and 11584 transitions. [2024-11-24 00:18:26,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2024-11-24 00:18:26,702 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:18:26,703 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:18:26,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 00:18:26,703 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:18:26,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:18:26,704 INFO L85 PathProgramCache]: Analyzing trace with hash -862057391, now seen corresponding path program 1 times [2024-11-24 00:18:26,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:18:26,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520879129] [2024-11-24 00:18:26,705 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:26,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:18:26,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:28,336 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:18:28,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:18:28,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520879129] [2024-11-24 00:18:28,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520879129] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:18:28,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:18:28,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:18:28,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396171976] [2024-11-24 00:18:28,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:18:28,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:18:28,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:18:28,339 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:18:28,339 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:18:28,339 INFO L87 Difference]: Start difference. First operand 8594 states and 11584 transitions. Second operand has 4 states, 4 states have (on average 74.0) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:36,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:18:36,312 INFO L93 Difference]: Finished difference Result 14487 states and 20449 transitions. [2024-11-24 00:18:36,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:18:36,313 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 74.0) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 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 296 [2024-11-24 00:18:36,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:18:36,343 INFO L225 Difference]: With dead ends: 14487 [2024-11-24 00:18:36,343 INFO L226 Difference]: Without dead ends: 8594 [2024-11-24 00:18:36,350 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:18:36,351 INFO L435 NwaCegarLoop]: 1775 mSDtfsCounter, 1151 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 5715 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1151 SdHoareTripleChecker+Valid, 1954 SdHoareTripleChecker+Invalid, 5723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 5715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2024-11-24 00:18:36,352 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1151 Valid, 1954 Invalid, 5723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 5715 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2024-11-24 00:18:36,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8594 states. [2024-11-24 00:18:36,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8594 to 8594. [2024-11-24 00:18:36,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8594 states, 8593 states have (on average 1.3465611544280227) internal successors, (11571), 8593 states have internal predecessors, (11571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:36,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8594 states to 8594 states and 11571 transitions. [2024-11-24 00:18:36,529 INFO L78 Accepts]: Start accepts. Automaton has 8594 states and 11571 transitions. Word has length 296 [2024-11-24 00:18:36,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:18:36,530 INFO L471 AbstractCegarLoop]: Abstraction has 8594 states and 11571 transitions. [2024-11-24 00:18:36,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.0) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:36,530 INFO L276 IsEmpty]: Start isEmpty. Operand 8594 states and 11571 transitions. [2024-11-24 00:18:36,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 618 [2024-11-24 00:18:36,543 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:18:36,544 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:18:36,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 00:18:36,544 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:18:36,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:18:36,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1175205269, now seen corresponding path program 1 times [2024-11-24 00:18:36,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:18:36,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889932001] [2024-11-24 00:18:36,546 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:36,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:18:36,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:37,535 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-24 00:18:37,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:18:37,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889932001] [2024-11-24 00:18:37,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889932001] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:18:37,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:18:37,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 00:18:37,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156568557] [2024-11-24 00:18:37,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:18:37,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:18:37,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:18:37,539 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:18:37,539 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:18:37,539 INFO L87 Difference]: Start difference. First operand 8594 states and 11571 transitions. Second operand has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 2 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:46,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:18:46,350 INFO L93 Difference]: Finished difference Result 20123 states and 28981 transitions. [2024-11-24 00:18:46,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:18:46,351 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 2 states have internal predecessors, (550), 0 states have call successors, (0), 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 617 [2024-11-24 00:18:46,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:18:46,391 INFO L225 Difference]: With dead ends: 20123 [2024-11-24 00:18:46,391 INFO L226 Difference]: Without dead ends: 14261 [2024-11-24 00:18:46,397 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:18:46,400 INFO L435 NwaCegarLoop]: 1338 mSDtfsCounter, 1356 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 4196 mSolverCounterSat, 1430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1356 SdHoareTripleChecker+Valid, 1610 SdHoareTripleChecker+Invalid, 5626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1430 IncrementalHoareTripleChecker+Valid, 4196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2024-11-24 00:18:46,404 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1356 Valid, 1610 Invalid, 5626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1430 Valid, 4196 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2024-11-24 00:18:46,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14261 states. [2024-11-24 00:18:46,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14261 to 14244. [2024-11-24 00:18:46,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14244 states, 14243 states have (on average 1.2722038896299936) internal successors, (18120), 14243 states have internal predecessors, (18120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:46,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14244 states to 14244 states and 18120 transitions. [2024-11-24 00:18:46,647 INFO L78 Accepts]: Start accepts. Automaton has 14244 states and 18120 transitions. Word has length 617 [2024-11-24 00:18:46,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:18:46,648 INFO L471 AbstractCegarLoop]: Abstraction has 14244 states and 18120 transitions. [2024-11-24 00:18:46,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 2 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:46,650 INFO L276 IsEmpty]: Start isEmpty. Operand 14244 states and 18120 transitions. [2024-11-24 00:18:46,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2024-11-24 00:18:46,674 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:18:46,675 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:18:46,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 00:18:46,676 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:18:46,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:18:46,678 INFO L85 PathProgramCache]: Analyzing trace with hash 848910986, now seen corresponding path program 1 times [2024-11-24 00:18:46,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:18:46,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106230690] [2024-11-24 00:18:46,678 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:46,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:18:46,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:47,551 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-24 00:18:47,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:18:47,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106230690] [2024-11-24 00:18:47,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106230690] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:18:47,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:18:47,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 00:18:47,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799822913] [2024-11-24 00:18:47,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:18:47,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:18:47,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:18:47,555 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:18:47,555 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:18:47,556 INFO L87 Difference]: Start difference. First operand 14244 states and 18120 transitions. Second operand has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 2 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:56,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:18:56,318 INFO L93 Difference]: Finished difference Result 28511 states and 37629 transitions. [2024-11-24 00:18:56,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:18:56,318 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 2 states have internal predecessors, (550), 0 states have call successors, (0), 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 622 [2024-11-24 00:18:56,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:18:56,363 INFO L225 Difference]: With dead ends: 28511 [2024-11-24 00:18:56,363 INFO L226 Difference]: Without dead ends: 16999 [2024-11-24 00:18:56,371 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:18:56,372 INFO L435 NwaCegarLoop]: 706 mSDtfsCounter, 1387 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 3927 mSolverCounterSat, 2123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1387 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 6050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2123 IncrementalHoareTripleChecker+Valid, 3927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2024-11-24 00:18:56,373 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1387 Valid, 757 Invalid, 6050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2123 Valid, 3927 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2024-11-24 00:18:56,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16999 states. [2024-11-24 00:18:56,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16999 to 16985. [2024-11-24 00:18:56,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16985 states, 16984 states have (on average 1.2707253886010363) internal successors, (21582), 16984 states have internal predecessors, (21582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:56,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16985 states to 16985 states and 21582 transitions. [2024-11-24 00:18:56,627 INFO L78 Accepts]: Start accepts. Automaton has 16985 states and 21582 transitions. Word has length 622 [2024-11-24 00:18:56,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:18:56,628 INFO L471 AbstractCegarLoop]: Abstraction has 16985 states and 21582 transitions. [2024-11-24 00:18:56,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 2 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:56,629 INFO L276 IsEmpty]: Start isEmpty. Operand 16985 states and 21582 transitions. [2024-11-24 00:18:56,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 626 [2024-11-24 00:18:56,647 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:18:56,649 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:18:56,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 00:18:56,649 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:18:56,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:18:56,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1288083713, now seen corresponding path program 1 times [2024-11-24 00:18:56,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:18:56,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445106877] [2024-11-24 00:18:56,651 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:56,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:18:56,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:57,437 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-24 00:18:57,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:18:57,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445106877] [2024-11-24 00:18:57,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445106877] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:18:57,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:18:57,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 00:18:57,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129700140] [2024-11-24 00:18:57,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:18:57,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:18:57,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:18:57,442 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:18:57,443 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:18:57,443 INFO L87 Difference]: Start difference. First operand 16985 states and 21582 transitions. Second operand has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 2 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:06,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:19:06,820 INFO L93 Difference]: Finished difference Result 43710 states and 57265 transitions. [2024-11-24 00:19:06,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:19:06,820 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 2 states have internal predecessors, (550), 0 states have call successors, (0), 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 625 [2024-11-24 00:19:06,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:19:06,869 INFO L225 Difference]: With dead ends: 43710 [2024-11-24 00:19:06,869 INFO L226 Difference]: Without dead ends: 29457 [2024-11-24 00:19:06,880 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:19:06,881 INFO L435 NwaCegarLoop]: 715 mSDtfsCounter, 2112 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 5114 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2112 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 5548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 5114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:19:06,881 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2112 Valid, 985 Invalid, 5548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 5114 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2024-11-24 00:19:06,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29457 states. [2024-11-24 00:19:07,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29457 to 29454. [2024-11-24 00:19:07,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29454 states, 29453 states have (on average 1.255593657691916) internal successors, (36981), 29453 states have internal predecessors, (36981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:07,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29454 states to 29454 states and 36981 transitions. [2024-11-24 00:19:07,308 INFO L78 Accepts]: Start accepts. Automaton has 29454 states and 36981 transitions. Word has length 625 [2024-11-24 00:19:07,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:19:07,310 INFO L471 AbstractCegarLoop]: Abstraction has 29454 states and 36981 transitions. [2024-11-24 00:19:07,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 2 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:07,310 INFO L276 IsEmpty]: Start isEmpty. Operand 29454 states and 36981 transitions. [2024-11-24 00:19:07,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 653 [2024-11-24 00:19:07,316 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:19:07,317 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:19:07,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 00:19:07,317 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:19:07,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:19:07,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1902908419, now seen corresponding path program 1 times [2024-11-24 00:19:07,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:19:07,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918301880] [2024-11-24 00:19:07,319 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:19:07,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:19:07,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:19:09,269 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 220 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:19:09,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:19:09,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918301880] [2024-11-24 00:19:09,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918301880] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:19:09,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:19:09,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:19:09,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798698153] [2024-11-24 00:19:09,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:19:09,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:19:09,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:19:09,273 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:19:09,274 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:19:09,274 INFO L87 Difference]: Start difference. First operand 29454 states and 36981 transitions. Second operand has 5 states, 5 states have (on average 130.4) internal successors, (652), 4 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:21,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:19:21,089 INFO L93 Difference]: Finished difference Result 63037 states and 78523 transitions. [2024-11-24 00:19:21,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:19:21,090 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 130.4) internal successors, (652), 4 states have internal predecessors, (652), 0 states have call successors, (0), 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 652 [2024-11-24 00:19:21,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:19:21,136 INFO L225 Difference]: With dead ends: 63037 [2024-11-24 00:19:21,136 INFO L226 Difference]: Without dead ends: 36289 [2024-11-24 00:19:21,152 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:19:21,153 INFO L435 NwaCegarLoop]: 1654 mSDtfsCounter, 2272 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 10028 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2272 SdHoareTripleChecker+Valid, 1870 SdHoareTripleChecker+Invalid, 10216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 10028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:19:21,154 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2272 Valid, 1870 Invalid, 10216 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [188 Valid, 10028 Invalid, 0 Unknown, 0 Unchecked, 11.4s Time] [2024-11-24 00:19:21,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36289 states. [2024-11-24 00:19:21,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36289 to 34921. [2024-11-24 00:19:21,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34921 states, 34920 states have (on average 1.2223654066437573) internal successors, (42685), 34920 states have internal predecessors, (42685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:21,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34921 states to 34921 states and 42685 transitions. [2024-11-24 00:19:21,606 INFO L78 Accepts]: Start accepts. Automaton has 34921 states and 42685 transitions. Word has length 652 [2024-11-24 00:19:21,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:19:21,608 INFO L471 AbstractCegarLoop]: Abstraction has 34921 states and 42685 transitions. [2024-11-24 00:19:21,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 130.4) internal successors, (652), 4 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:21,608 INFO L276 IsEmpty]: Start isEmpty. Operand 34921 states and 42685 transitions. [2024-11-24 00:19:21,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 855 [2024-11-24 00:19:21,618 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:19:21,619 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:19:21,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 00:19:21,620 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:19:21,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:19:21,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1001552943, now seen corresponding path program 1 times [2024-11-24 00:19:21,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:19:21,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400397357] [2024-11-24 00:19:21,622 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:19:21,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:19:21,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:19:24,796 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 118 proven. 360 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-24 00:19:24,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:19:24,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400397357] [2024-11-24 00:19:24,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400397357] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:19:24,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973218419] [2024-11-24 00:19:24,797 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:19:24,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:19:24,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e25ba456-ae48-4a60-b5d3-029a93060f08/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:19:24,801 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e25ba456-ae48-4a60-b5d3-029a93060f08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:19:24,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e25ba456-ae48-4a60-b5d3-029a93060f08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 00:19:25,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:19:25,194 INFO L256 TraceCheckSpWp]: Trace formula consists of 986 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-24 00:19:25,233 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:19:25,460 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2024-11-24 00:19:25,460 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:19:25,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973218419] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:19:25,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:19:25,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-24 00:19:25,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115406509] [2024-11-24 00:19:25,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:19:25,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:19:25,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:19:25,464 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:19:25,464 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:19:25,465 INFO L87 Difference]: Start difference. First operand 34921 states and 42685 transitions. Second operand has 3 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:33,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:19:33,778 INFO L93 Difference]: Finished difference Result 87633 states and 109678 transitions. [2024-11-24 00:19:33,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:19:33,779 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 states have internal predecessors, (553), 0 states have call successors, (0), 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 854 [2024-11-24 00:19:33,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:19:33,841 INFO L225 Difference]: With dead ends: 87633 [2024-11-24 00:19:33,842 INFO L226 Difference]: Without dead ends: 55444 [2024-11-24 00:19:33,861 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 858 GetRequests, 855 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:19:33,862 INFO L435 NwaCegarLoop]: 1675 mSDtfsCounter, 1410 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 4095 mSolverCounterSat, 1671 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1410 SdHoareTripleChecker+Valid, 1872 SdHoareTripleChecker+Invalid, 5766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1671 IncrementalHoareTripleChecker+Valid, 4095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2024-11-24 00:19:33,862 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1410 Valid, 1872 Invalid, 5766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1671 Valid, 4095 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2024-11-24 00:19:33,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55444 states. [2024-11-24 00:19:34,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55444 to 54041. [2024-11-24 00:19:34,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54041 states, 54040 states have (on average 1.181661732050333) internal successors, (63857), 54040 states have internal predecessors, (63857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:34,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54041 states to 54041 states and 63857 transitions. [2024-11-24 00:19:34,530 INFO L78 Accepts]: Start accepts. Automaton has 54041 states and 63857 transitions. Word has length 854 [2024-11-24 00:19:34,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:19:34,531 INFO L471 AbstractCegarLoop]: Abstraction has 54041 states and 63857 transitions. [2024-11-24 00:19:34,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:34,531 INFO L276 IsEmpty]: Start isEmpty. Operand 54041 states and 63857 transitions. [2024-11-24 00:19:34,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 915 [2024-11-24 00:19:34,668 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:19:34,669 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:19:34,706 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e25ba456-ae48-4a60-b5d3-029a93060f08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 00:19:34,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e25ba456-ae48-4a60-b5d3-029a93060f08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:19:34,874 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:19:34,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:19:34,876 INFO L85 PathProgramCache]: Analyzing trace with hash -913205463, now seen corresponding path program 1 times [2024-11-24 00:19:34,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:19:34,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673199845] [2024-11-24 00:19:34,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:19:34,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:19:35,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:19:36,472 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 551 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2024-11-24 00:19:36,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:19:36,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673199845] [2024-11-24 00:19:36,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673199845] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:19:36,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:19:36,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:19:36,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780097341] [2024-11-24 00:19:36,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:19:36,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:19:36,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:19:36,476 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:19:36,476 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:19:36,477 INFO L87 Difference]: Start difference. First operand 54041 states and 63857 transitions. Second operand has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:51,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:19:51,636 INFO L93 Difference]: Finished difference Result 172462 states and 208118 transitions. [2024-11-24 00:19:51,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:19:51,638 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 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 914 [2024-11-24 00:19:51,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:19:51,753 INFO L225 Difference]: With dead ends: 172462 [2024-11-24 00:19:51,754 INFO L226 Difference]: Without dead ends: 121153 [2024-11-24 00:19:51,788 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 [2024-11-24 00:19:51,789 INFO L435 NwaCegarLoop]: 952 mSDtfsCounter, 3216 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 8806 mSolverCounterSat, 2790 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3216 SdHoareTripleChecker+Valid, 1286 SdHoareTripleChecker+Invalid, 11596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2790 IncrementalHoareTripleChecker+Valid, 8806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:19:51,789 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3216 Valid, 1286 Invalid, 11596 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2790 Valid, 8806 Invalid, 0 Unknown, 0 Unchecked, 14.4s Time] [2024-11-24 00:19:51,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121153 states. [2024-11-24 00:19:53,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121153 to 104650. [2024-11-24 00:19:53,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104650 states, 104649 states have (on average 1.1877705472579767) internal successors, (124299), 104649 states have internal predecessors, (124299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:53,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104650 states to 104650 states and 124299 transitions. [2024-11-24 00:19:53,682 INFO L78 Accepts]: Start accepts. Automaton has 104650 states and 124299 transitions. Word has length 914 [2024-11-24 00:19:53,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:19:53,683 INFO L471 AbstractCegarLoop]: Abstraction has 104650 states and 124299 transitions. [2024-11-24 00:19:53,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:53,683 INFO L276 IsEmpty]: Start isEmpty. Operand 104650 states and 124299 transitions. [2024-11-24 00:19:53,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 921 [2024-11-24 00:19:53,709 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:19:53,709 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:19:53,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 00:19:53,710 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:19:53,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:19:53,711 INFO L85 PathProgramCache]: Analyzing trace with hash 2048607819, now seen corresponding path program 1 times [2024-11-24 00:19:53,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:19:53,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583479269] [2024-11-24 00:19:53,711 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:19:53,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:19:54,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:19:57,150 INFO L134 CoverageAnalysis]: Checked inductivity of 704 backedges. 495 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2024-11-24 00:19:57,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:19:57,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583479269] [2024-11-24 00:19:57,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583479269] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:19:57,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:19:57,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:19:57,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348073804] [2024-11-24 00:19:57,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:19:57,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:19:57,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:19:57,154 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:19:57,155 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:19:57,155 INFO L87 Difference]: Start difference. First operand 104650 states and 124299 transitions. Second operand has 3 states, 3 states have (on average 237.33333333333334) internal successors, (712), 3 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:20:07,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:20:07,180 INFO L93 Difference]: Finished difference Result 291333 states and 348718 transitions. [2024-11-24 00:20:07,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:20:07,181 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 237.33333333333334) internal successors, (712), 3 states have internal predecessors, (712), 0 states have call successors, (0), 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 920 [2024-11-24 00:20:07,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:20:07,626 INFO L225 Difference]: With dead ends: 291333 [2024-11-24 00:20:07,626 INFO L226 Difference]: Without dead ends: 189415 [2024-11-24 00:20:07,710 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:20:07,710 INFO L435 NwaCegarLoop]: 487 mSDtfsCounter, 1595 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 4226 mSolverCounterSat, 2392 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1595 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 6618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2392 IncrementalHoareTripleChecker+Valid, 4226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2024-11-24 00:20:07,710 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1595 Valid, 542 Invalid, 6618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2392 Valid, 4226 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2024-11-24 00:20:08,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189415 states. [2024-11-24 00:20:10,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189415 to 172901. [2024-11-24 00:20:10,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172901 states, 172900 states have (on average 1.2092712550607287) internal successors, (209083), 172900 states have internal predecessors, (209083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:20:11,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172901 states to 172901 states and 209083 transitions. [2024-11-24 00:20:11,313 INFO L78 Accepts]: Start accepts. Automaton has 172901 states and 209083 transitions. Word has length 920 [2024-11-24 00:20:11,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:20:11,314 INFO L471 AbstractCegarLoop]: Abstraction has 172901 states and 209083 transitions. [2024-11-24 00:20:11,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 237.33333333333334) internal successors, (712), 3 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:20:11,314 INFO L276 IsEmpty]: Start isEmpty. Operand 172901 states and 209083 transitions. [2024-11-24 00:20:11,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 952 [2024-11-24 00:20:11,324 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:20:11,324 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:20:11,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-24 00:20:11,325 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:20:11,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:20:11,326 INFO L85 PathProgramCache]: Analyzing trace with hash 2006679270, now seen corresponding path program 1 times [2024-11-24 00:20:11,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:20:11,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180279425] [2024-11-24 00:20:11,326 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:20:11,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:20:11,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:20:12,635 INFO L134 CoverageAnalysis]: Checked inductivity of 918 backedges. 522 proven. 0 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2024-11-24 00:20:12,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:20:12,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180279425] [2024-11-24 00:20:12,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180279425] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:20:12,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:20:12,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:20:12,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218171850] [2024-11-24 00:20:12,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:20:12,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:20:12,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:20:12,638 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:20:12,638 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:20:12,639 INFO L87 Difference]: Start difference. First operand 172901 states and 209083 transitions. Second operand has 3 states, 3 states have (on average 216.66666666666666) internal successors, (650), 3 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:20:21,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:20:21,218 INFO L93 Difference]: Finished difference Result 345806 states and 418220 transitions. [2024-11-24 00:20:21,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:20:21,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 216.66666666666666) internal successors, (650), 3 states have internal predecessors, (650), 0 states have call successors, (0), 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 951 [2024-11-24 00:20:21,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:20:21,441 INFO L225 Difference]: With dead ends: 345806 [2024-11-24 00:20:21,442 INFO L226 Difference]: Without dead ends: 172907 [2024-11-24 00:20:21,763 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 [2024-11-24 00:20:21,764 INFO L435 NwaCegarLoop]: 2876 mSDtfsCounter, 1508 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 3671 mSolverCounterSat, 1477 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1508 SdHoareTripleChecker+Valid, 3058 SdHoareTripleChecker+Invalid, 5148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1477 IncrementalHoareTripleChecker+Valid, 3671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:20:21,764 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1508 Valid, 3058 Invalid, 5148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1477 Valid, 3671 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2024-11-24 00:20:21,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172907 states. [2024-11-24 00:20:23,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172907 to 167436. [2024-11-24 00:20:23,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167436 states, 167435 states have (on average 1.154639113685908) internal successors, (193327), 167435 states have internal predecessors, (193327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:20:24,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167436 states to 167436 states and 193327 transitions. [2024-11-24 00:20:24,321 INFO L78 Accepts]: Start accepts. Automaton has 167436 states and 193327 transitions. Word has length 951 [2024-11-24 00:20:24,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:20:24,322 INFO L471 AbstractCegarLoop]: Abstraction has 167436 states and 193327 transitions. [2024-11-24 00:20:24,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 216.66666666666666) internal successors, (650), 3 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:20:24,323 INFO L276 IsEmpty]: Start isEmpty. Operand 167436 states and 193327 transitions. [2024-11-24 00:20:24,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1012 [2024-11-24 00:20:24,344 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:20:24,345 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:20:24,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-24 00:20:24,347 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:20:24,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:20:24,352 INFO L85 PathProgramCache]: Analyzing trace with hash -653307196, now seen corresponding path program 1 times [2024-11-24 00:20:24,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:20:24,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578367815] [2024-11-24 00:20:24,354 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:20:24,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:20:24,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:20:26,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1218 backedges. 628 proven. 0 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2024-11-24 00:20:26,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:20:26,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578367815] [2024-11-24 00:20:26,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578367815] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:20:26,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:20:26,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:20:26,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623737950] [2024-11-24 00:20:26,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:20:26,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:20:26,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:20:26,570 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:20:26,570 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:20:26,571 INFO L87 Difference]: Start difference. First operand 167436 states and 193327 transitions. Second operand has 5 states, 5 states have (on average 129.2) internal successors, (646), 5 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:20:37,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:20:37,091 INFO L93 Difference]: Finished difference Result 366264 states and 427477 transitions. [2024-11-24 00:20:37,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:20:37,091 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 129.2) internal successors, (646), 5 states have internal predecessors, (646), 0 states have call successors, (0), 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 1011 [2024-11-24 00:20:37,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:20:37,322 INFO L225 Difference]: With dead ends: 366264 [2024-11-24 00:20:37,322 INFO L226 Difference]: Without dead ends: 211120 [2024-11-24 00:20:37,396 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:20:37,397 INFO L435 NwaCegarLoop]: 2954 mSDtfsCounter, 2811 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 7084 mSolverCounterSat, 976 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2811 SdHoareTripleChecker+Valid, 3314 SdHoareTripleChecker+Invalid, 8060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 976 IncrementalHoareTripleChecker+Valid, 7084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:20:37,397 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2811 Valid, 3314 Invalid, 8060 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [976 Valid, 7084 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2024-11-24 00:20:37,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211120 states. [2024-11-24 00:20:39,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211120 to 191990. [2024-11-24 00:20:39,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191990 states, 191989 states have (on average 1.139638208439025) internal successors, (218798), 191989 states have internal predecessors, (218798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:20:39,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191990 states to 191990 states and 218798 transitions. [2024-11-24 00:20:39,954 INFO L78 Accepts]: Start accepts. Automaton has 191990 states and 218798 transitions. Word has length 1011 [2024-11-24 00:20:39,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:20:39,955 INFO L471 AbstractCegarLoop]: Abstraction has 191990 states and 218798 transitions. [2024-11-24 00:20:39,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 129.2) internal successors, (646), 5 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:20:39,955 INFO L276 IsEmpty]: Start isEmpty. Operand 191990 states and 218798 transitions. [2024-11-24 00:20:39,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1032 [2024-11-24 00:20:39,967 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:20:39,967 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:20:39,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-24 00:20:39,968 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:20:39,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:20:39,969 INFO L85 PathProgramCache]: Analyzing trace with hash -752903690, now seen corresponding path program 1 times [2024-11-24 00:20:39,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:20:39,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976018618] [2024-11-24 00:20:39,969 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:20:39,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:20:40,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:20:41,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1262 backedges. 672 proven. 0 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2024-11-24 00:20:41,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:20:41,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976018618] [2024-11-24 00:20:41,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976018618] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:20:41,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:20:41,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:20:41,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783489869] [2024-11-24 00:20:41,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:20:41,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:20:41,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:20:41,460 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:20:41,463 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:20:41,464 INFO L87 Difference]: Start difference. First operand 191990 states and 218798 transitions. Second operand has 4 states, 4 states have (on average 166.5) internal successors, (666), 4 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:20:56,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:20:56,222 INFO L93 Difference]: Finished difference Result 542335 states and 633744 transitions. [2024-11-24 00:20:56,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:20:56,223 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 166.5) internal successors, (666), 4 states have internal predecessors, (666), 0 states have call successors, (0), 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 1031 [2024-11-24 00:20:56,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:20:56,642 INFO L225 Difference]: With dead ends: 542335 [2024-11-24 00:20:56,642 INFO L226 Difference]: Without dead ends: 368099 [2024-11-24 00:20:56,709 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 [2024-11-24 00:20:56,710 INFO L435 NwaCegarLoop]: 869 mSDtfsCounter, 3094 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 7669 mSolverCounterSat, 2855 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3094 SdHoareTripleChecker+Valid, 1084 SdHoareTripleChecker+Invalid, 10524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2855 IncrementalHoareTripleChecker+Valid, 7669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2024-11-24 00:20:56,710 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3094 Valid, 1084 Invalid, 10524 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2855 Valid, 7669 Invalid, 0 Unknown, 0 Unchecked, 12.9s Time] [2024-11-24 00:20:57,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368099 states. [2024-11-24 00:21:01,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368099 to 338050. [2024-11-24 00:21:01,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338050 states, 338049 states have (on average 1.1357554674026547) internal successors, (383941), 338049 states have internal predecessors, (383941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:02,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338050 states to 338050 states and 383941 transitions. [2024-11-24 00:21:02,158 INFO L78 Accepts]: Start accepts. Automaton has 338050 states and 383941 transitions. Word has length 1031 [2024-11-24 00:21:02,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:21:02,159 INFO L471 AbstractCegarLoop]: Abstraction has 338050 states and 383941 transitions. [2024-11-24 00:21:02,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 166.5) internal successors, (666), 4 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:02,160 INFO L276 IsEmpty]: Start isEmpty. Operand 338050 states and 383941 transitions. [2024-11-24 00:21:02,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1157 [2024-11-24 00:21:02,185 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:21:02,186 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:21:02,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-24 00:21:02,186 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:21:02,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:21:02,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1578365389, now seen corresponding path program 1 times [2024-11-24 00:21:02,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:21:02,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920519154] [2024-11-24 00:21:02,190 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:21:02,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:21:03,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:21:03,993 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 781 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2024-11-24 00:21:03,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:21:03,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920519154] [2024-11-24 00:21:03,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920519154] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:21:03,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:21:03,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:21:03,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058644852] [2024-11-24 00:21:03,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:21:03,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:21:03,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:21:03,995 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:21:03,995 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:21:03,996 INFO L87 Difference]: Start difference. First operand 338050 states and 383941 transitions. Second operand has 3 states, 3 states have (on average 316.0) internal successors, (948), 3 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:15,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:21:15,627 INFO L93 Difference]: Finished difference Result 820900 states and 935071 transitions. [2024-11-24 00:21:15,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:21:15,627 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 316.0) internal successors, (948), 3 states have internal predecessors, (948), 0 states have call successors, (0), 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 1156 [2024-11-24 00:21:15,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:21:16,299 INFO L225 Difference]: With dead ends: 820900 [2024-11-24 00:21:16,299 INFO L226 Difference]: Without dead ends: 482851 [2024-11-24 00:21:16,404 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 [2024-11-24 00:21:16,404 INFO L435 NwaCegarLoop]: 3019 mSDtfsCounter, 1080 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 4955 mSolverCounterSat, 905 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1080 SdHoareTripleChecker+Valid, 3184 SdHoareTripleChecker+Invalid, 5860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 905 IncrementalHoareTripleChecker+Valid, 4955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2024-11-24 00:21:16,405 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1080 Valid, 3184 Invalid, 5860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [905 Valid, 4955 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2024-11-24 00:21:16,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482851 states.