./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-86.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6a422f-b7ff-4917-aa17-060c2594d5a4/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6a422f-b7ff-4917-aa17-060c2594d5a4/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6a422f-b7ff-4917-aa17-060c2594d5a4/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6a422f-b7ff-4917-aa17-060c2594d5a4/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-86.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6a422f-b7ff-4917-aa17-060c2594d5a4/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6a422f-b7ff-4917-aa17-060c2594d5a4/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f6ff634e5a2ddc2f99bfdcb8104b17cc6d633ac176eb1b09b8fd9ed3cc24553b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:48:04,180 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:48:04,281 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6a422f-b7ff-4917-aa17-060c2594d5a4/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:48:04,287 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:48:04,288 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:48:04,316 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:48:04,317 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:48:04,317 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:48:04,318 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:48:04,318 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:48:04,318 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:48:04,318 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:48:04,318 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:48:04,319 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:48:04,319 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:48:04,319 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:48:04,319 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:48:04,319 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:48:04,319 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:48:04,320 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:48:04,320 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:48:04,320 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:48:04,320 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:48:04,320 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:48:04,320 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:48:04,320 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:48:04,320 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:48:04,321 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:48:04,321 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:48:04,321 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:48:04,321 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:48:04,321 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:48:04,321 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:48:04,321 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:48:04,321 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:48:04,322 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:48:04,322 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:48:04,322 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:48:04,322 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:48:04,322 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:48:04,322 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:48:04,322 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:48:04,323 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:48:04,323 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:48:04,323 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:48:04,323 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:48:04,323 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:48:04,323 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:48:04,323 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_8b6a422f-b7ff-4917-aa17-060c2594d5a4/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6ff634e5a2ddc2f99bfdcb8104b17cc6d633ac176eb1b09b8fd9ed3cc24553b [2024-11-28 02:48:04,673 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:48:04,690 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:48:04,695 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:48:04,696 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:48:04,697 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:48:04,698 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6a422f-b7ff-4917-aa17-060c2594d5a4/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-86.i [2024-11-28 02:48:07,991 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6a422f-b7ff-4917-aa17-060c2594d5a4/bin/uautomizer-verify-aQ6SnzHsRB/data/5e390d6a0/33cdcb341d324292b4f3ae114ac32b0b/FLAGb0a50ebce [2024-11-28 02:48:08,356 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:48:08,357 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6a422f-b7ff-4917-aa17-060c2594d5a4/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-86.i [2024-11-28 02:48:08,368 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6a422f-b7ff-4917-aa17-060c2594d5a4/bin/uautomizer-verify-aQ6SnzHsRB/data/5e390d6a0/33cdcb341d324292b4f3ae114ac32b0b/FLAGb0a50ebce [2024-11-28 02:48:08,385 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6a422f-b7ff-4917-aa17-060c2594d5a4/bin/uautomizer-verify-aQ6SnzHsRB/data/5e390d6a0/33cdcb341d324292b4f3ae114ac32b0b [2024-11-28 02:48:08,388 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:48:08,390 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:48:08,391 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:48:08,392 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:48:08,397 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:48:08,398 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:48:08" (1/1) ... [2024-11-28 02:48:08,399 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2883525c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:08, skipping insertion in model container [2024-11-28 02:48:08,399 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:48:08" (1/1) ... [2024-11-28 02:48:08,426 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:48:08,639 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_8b6a422f-b7ff-4917-aa17-060c2594d5a4/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-86.i[915,928] [2024-11-28 02:48:08,727 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:48:08,747 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:48:08,761 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_8b6a422f-b7ff-4917-aa17-060c2594d5a4/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-86.i[915,928] [2024-11-28 02:48:08,829 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:48:08,848 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:48:08,849 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:08 WrapperNode [2024-11-28 02:48:08,849 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:48:08,850 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:48:08,851 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:48:08,851 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:48:08,862 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:08" (1/1) ... [2024-11-28 02:48:08,879 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:08" (1/1) ... [2024-11-28 02:48:08,944 INFO L138 Inliner]: procedures = 26, calls = 28, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 131 [2024-11-28 02:48:08,947 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:48:08,948 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:48:08,952 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:48:08,952 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:48:08,966 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:08" (1/1) ... [2024-11-28 02:48:08,966 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:08" (1/1) ... [2024-11-28 02:48:08,975 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:08" (1/1) ... [2024-11-28 02:48:08,994 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]. [2024-11-28 02:48:08,994 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:08" (1/1) ... [2024-11-28 02:48:08,995 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:08" (1/1) ... [2024-11-28 02:48:09,003 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:08" (1/1) ... [2024-11-28 02:48:09,004 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:08" (1/1) ... [2024-11-28 02:48:09,008 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:08" (1/1) ... [2024-11-28 02:48:09,011 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:08" (1/1) ... [2024-11-28 02:48:09,012 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:08" (1/1) ... [2024-11-28 02:48:09,016 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:48:09,017 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:48:09,017 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:48:09,017 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:48:09,019 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:08" (1/1) ... [2024-11-28 02:48:09,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:48:09,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6a422f-b7ff-4917-aa17-060c2594d5a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:48:09,059 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6a422f-b7ff-4917-aa17-060c2594d5a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:48:09,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6a422f-b7ff-4917-aa17-060c2594d5a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:48:09,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:48:09,095 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 02:48:09,095 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 02:48:09,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:48:09,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:48:09,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:48:09,199 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:48:09,201 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:48:09,719 INFO L? ?]: Removed 21 outVars from TransFormulas that were not future-live. [2024-11-28 02:48:09,719 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:48:09,735 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:48:09,736 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-28 02:48:09,736 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:48:09 BoogieIcfgContainer [2024-11-28 02:48:09,736 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:48:09,742 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:48:09,742 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:48:09,749 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:48:09,749 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:48:08" (1/3) ... [2024-11-28 02:48:09,750 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ff3cdff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:48:09, skipping insertion in model container [2024-11-28 02:48:09,750 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:08" (2/3) ... [2024-11-28 02:48:09,751 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ff3cdff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:48:09, skipping insertion in model container [2024-11-28 02:48:09,751 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:48:09" (3/3) ... [2024-11-28 02:48:09,752 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_50-1loop_file-86.i [2024-11-28 02:48:09,774 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:48:09,778 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_loopvsstraightlinecode_50-1loop_file-86.i that has 2 procedures, 56 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 02:48:09,852 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:48:09,871 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;@781516b7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:48:09,871 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:48:09,876 INFO L276 IsEmpty]: Start isEmpty. Operand has 56 states, 38 states have (on average 1.394736842105263) internal successors, (53), 39 states have internal predecessors, (53), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-28 02:48:09,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-28 02:48:09,892 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:48:09,893 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:48:09,893 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:48:09,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:09,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1791317235, now seen corresponding path program 1 times [2024-11-28 02:48:09,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:09,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620418688] [2024-11-28 02:48:09,915 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:09,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:10,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:10,352 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2024-11-28 02:48:10,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:10,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620418688] [2024-11-28 02:48:10,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620418688] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:48:10,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854258335] [2024-11-28 02:48:10,354 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:10,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:48:10,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6a422f-b7ff-4917-aa17-060c2594d5a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:48:10,362 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6a422f-b7ff-4917-aa17-060c2594d5a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:48:10,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6a422f-b7ff-4917-aa17-060c2594d5a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:48:10,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:10,613 INFO L256 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 02:48:10,627 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:48:10,665 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2024-11-28 02:48:10,669 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:48:10,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854258335] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:10,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:48:10,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 02:48:10,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471476418] [2024-11-28 02:48:10,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:10,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 02:48:10,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:10,707 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 02:48:10,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:48:10,711 INFO L87 Difference]: Start difference. First operand has 56 states, 38 states have (on average 1.394736842105263) internal successors, (53), 39 states have internal predecessors, (53), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 02:48:10,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:48:10,751 INFO L93 Difference]: Finished difference Result 109 states and 178 transitions. [2024-11-28 02:48:10,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 02:48:10,753 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 102 [2024-11-28 02:48:10,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:48:10,762 INFO L225 Difference]: With dead ends: 109 [2024-11-28 02:48:10,763 INFO L226 Difference]: Without dead ends: 52 [2024-11-28 02:48:10,768 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:48:10,773 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:48:10,777 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:48:10,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-28 02:48:10,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2024-11-28 02:48:10,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 35 states have internal predecessors, (46), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-28 02:48:10,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 76 transitions. [2024-11-28 02:48:10,834 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 76 transitions. Word has length 102 [2024-11-28 02:48:10,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:48:10,834 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 76 transitions. [2024-11-28 02:48:10,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 02:48:10,835 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 76 transitions. [2024-11-28 02:48:10,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-28 02:48:10,838 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:48:10,838 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:48:10,850 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6a422f-b7ff-4917-aa17-060c2594d5a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:48:11,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6a422f-b7ff-4917-aa17-060c2594d5a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 02:48:11,041 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:48:11,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:11,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1345471183, now seen corresponding path program 1 times [2024-11-28 02:48:11,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:11,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871278169] [2024-11-28 02:48:11,043 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:11,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:11,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:11,690 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-28 02:48:11,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:11,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871278169] [2024-11-28 02:48:11,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871278169] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:11,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:48:11,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:48:11,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731358050] [2024-11-28 02:48:11,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:11,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:48:11,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:11,696 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:48:11,696 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:48:11,696 INFO L87 Difference]: Start difference. First operand 52 states and 76 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-28 02:48:12,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:48:12,024 INFO L93 Difference]: Finished difference Result 152 states and 224 transitions. [2024-11-28 02:48:12,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:48:12,025 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 102 [2024-11-28 02:48:12,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:48:12,028 INFO L225 Difference]: With dead ends: 152 [2024-11-28 02:48:12,028 INFO L226 Difference]: Without dead ends: 103 [2024-11-28 02:48:12,029 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:48:12,030 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 69 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:48:12,032 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 244 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:48:12,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-28 02:48:12,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 82. [2024-11-28 02:48:12,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 49 states have (on average 1.2244897959183674) internal successors, (60), 49 states have internal predecessors, (60), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-28 02:48:12,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 120 transitions. [2024-11-28 02:48:12,078 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 120 transitions. Word has length 102 [2024-11-28 02:48:12,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:48:12,079 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 120 transitions. [2024-11-28 02:48:12,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-28 02:48:12,080 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 120 transitions. [2024-11-28 02:48:12,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-28 02:48:12,083 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:48:12,084 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:48:12,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:48:12,084 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:48:12,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:12,086 INFO L85 PathProgramCache]: Analyzing trace with hash 334353933, now seen corresponding path program 1 times [2024-11-28 02:48:12,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:12,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548249710] [2024-11-28 02:48:12,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:12,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:12,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:22,839 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-28 02:48:22,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:22,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548249710] [2024-11-28 02:48:22,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548249710] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:22,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:48:22,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-28 02:48:22,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040488401] [2024-11-28 02:48:22,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:22,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 02:48:22,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:22,845 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 02:48:22,846 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-11-28 02:48:22,847 INFO L87 Difference]: Start difference. First operand 82 states and 120 transitions. Second operand has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-28 02:48:24,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:48:24,489 INFO L93 Difference]: Finished difference Result 212 states and 304 transitions. [2024-11-28 02:48:24,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 02:48:24,491 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 102 [2024-11-28 02:48:24,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:48:24,494 INFO L225 Difference]: With dead ends: 212 [2024-11-28 02:48:24,494 INFO L226 Difference]: Without dead ends: 163 [2024-11-28 02:48:24,499 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=166, Invalid=484, Unknown=0, NotChecked=0, Total=650 [2024-11-28 02:48:24,501 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 219 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:48:24,503 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 503 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 02:48:24,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-11-28 02:48:24,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 99. [2024-11-28 02:48:24,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 66 states have (on average 1.2575757575757576) internal successors, (83), 66 states have internal predecessors, (83), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-28 02:48:24,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 143 transitions. [2024-11-28 02:48:24,529 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 143 transitions. Word has length 102 [2024-11-28 02:48:24,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:48:24,530 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 143 transitions. [2024-11-28 02:48:24,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-28 02:48:24,530 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 143 transitions. [2024-11-28 02:48:24,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-28 02:48:24,532 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:48:24,532 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:48:24,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:48:24,533 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:48:24,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:24,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1035418511, now seen corresponding path program 1 times [2024-11-28 02:48:24,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:24,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643284442] [2024-11-28 02:48:24,534 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:24,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:24,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:24,626 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-28 02:48:24,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:24,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643284442] [2024-11-28 02:48:24,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643284442] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:24,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:48:24,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:48:24,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115967249] [2024-11-28 02:48:24,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:24,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:48:24,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:24,628 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:48:24,629 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:48:24,629 INFO L87 Difference]: Start difference. First operand 99 states and 143 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-28 02:48:24,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:48:24,695 INFO L93 Difference]: Finished difference Result 196 states and 287 transitions. [2024-11-28 02:48:24,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:48:24,696 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 102 [2024-11-28 02:48:24,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:48:24,699 INFO L225 Difference]: With dead ends: 196 [2024-11-28 02:48:24,699 INFO L226 Difference]: Without dead ends: 147 [2024-11-28 02:48:24,700 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 [2024-11-28 02:48:24,705 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 68 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:48:24,705 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 152 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:48:24,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-11-28 02:48:24,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 145. [2024-11-28 02:48:24,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 96 states have (on average 1.25) internal successors, (120), 96 states have internal predecessors, (120), 45 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-28 02:48:24,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 210 transitions. [2024-11-28 02:48:24,753 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 210 transitions. Word has length 102 [2024-11-28 02:48:24,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:48:24,753 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 210 transitions. [2024-11-28 02:48:24,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-28 02:48:24,754 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 210 transitions. [2024-11-28 02:48:24,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-28 02:48:24,755 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:48:24,756 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:48:24,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:48:24,756 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:48:24,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:24,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1828539130, now seen corresponding path program 1 times [2024-11-28 02:48:24,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:24,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339130194] [2024-11-28 02:48:24,759 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:24,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:24,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:32,513 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-28 02:48:32,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:32,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339130194] [2024-11-28 02:48:32,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339130194] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:32,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:48:32,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-28 02:48:32,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107143206] [2024-11-28 02:48:32,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:32,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 02:48:32,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:32,518 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 02:48:32,519 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:48:32,519 INFO L87 Difference]: Start difference. First operand 145 states and 210 transitions. Second operand has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-28 02:48:34,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:48:34,167 INFO L93 Difference]: Finished difference Result 200 states and 273 transitions. [2024-11-28 02:48:34,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 02:48:34,168 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 103 [2024-11-28 02:48:34,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:48:34,171 INFO L225 Difference]: With dead ends: 200 [2024-11-28 02:48:34,172 INFO L226 Difference]: Without dead ends: 198 [2024-11-28 02:48:34,174 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=191, Invalid=565, Unknown=0, NotChecked=0, Total=756 [2024-11-28 02:48:34,177 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 326 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:48:34,177 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 425 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 02:48:34,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-28 02:48:34,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 146. [2024-11-28 02:48:34,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 97 states have (on average 1.2474226804123711) internal successors, (121), 97 states have internal predecessors, (121), 45 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-28 02:48:34,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 211 transitions. [2024-11-28 02:48:34,231 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 211 transitions. Word has length 103 [2024-11-28 02:48:34,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:48:34,232 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 211 transitions. [2024-11-28 02:48:34,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-28 02:48:34,232 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 211 transitions. [2024-11-28 02:48:34,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-28 02:48:34,235 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:48:34,235 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:48:34,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:48:34,236 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:48:34,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:34,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1616381716, now seen corresponding path program 1 times [2024-11-28 02:48:34,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:34,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775900944] [2024-11-28 02:48:34,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:34,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:34,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:34,518 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-28 02:48:34,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:34,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775900944] [2024-11-28 02:48:34,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775900944] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:34,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:48:34,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:48:34,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063401162] [2024-11-28 02:48:34,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:34,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:48:34,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:34,526 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:48:34,526 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:48:34,526 INFO L87 Difference]: Start difference. First operand 146 states and 211 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-28 02:48:34,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:48:34,579 INFO L93 Difference]: Finished difference Result 252 states and 366 transitions. [2024-11-28 02:48:34,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:48:34,580 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 103 [2024-11-28 02:48:34,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:48:34,583 INFO L225 Difference]: With dead ends: 252 [2024-11-28 02:48:34,583 INFO L226 Difference]: Without dead ends: 154 [2024-11-28 02:48:34,584 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 [2024-11-28 02:48:34,589 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 6 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:48:34,592 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 143 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:48:34,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2024-11-28 02:48:34,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 146. [2024-11-28 02:48:34,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 97 states have (on average 1.2164948453608246) internal successors, (118), 97 states have internal predecessors, (118), 45 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-28 02:48:34,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 208 transitions. [2024-11-28 02:48:34,636 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 208 transitions. Word has length 103 [2024-11-28 02:48:34,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:48:34,640 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 208 transitions. [2024-11-28 02:48:34,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-28 02:48:34,640 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 208 transitions. [2024-11-28 02:48:34,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-28 02:48:34,646 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:48:34,646 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:48:34,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 02:48:34,647 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:48:34,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:34,647 INFO L85 PathProgramCache]: Analyzing trace with hash -903578218, now seen corresponding path program 1 times [2024-11-28 02:48:34,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:34,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776639627] [2024-11-28 02:48:34,648 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:34,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:34,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:44,828 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-28 02:48:44,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:44,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776639627] [2024-11-28 02:48:44,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776639627] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:44,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:48:44,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-28 02:48:44,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088877047] [2024-11-28 02:48:44,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:44,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 02:48:44,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:44,831 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 02:48:44,831 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2024-11-28 02:48:44,832 INFO L87 Difference]: Start difference. First operand 146 states and 208 transitions. Second operand has 16 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-28 02:48:52,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:48:52,270 INFO L93 Difference]: Finished difference Result 206 states and 274 transitions. [2024-11-28 02:48:52,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 02:48:52,271 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 103 [2024-11-28 02:48:52,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:48:52,273 INFO L225 Difference]: With dead ends: 206 [2024-11-28 02:48:52,273 INFO L226 Difference]: Without dead ends: 204 [2024-11-28 02:48:52,275 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=324, Invalid=1008, Unknown=0, NotChecked=0, Total=1332 [2024-11-28 02:48:52,276 INFO L435 NwaCegarLoop]: 58 mSDtfsCounter, 295 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:48:52,276 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 464 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-28 02:48:52,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2024-11-28 02:48:52,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 146. [2024-11-28 02:48:52,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 97 states have (on average 1.2164948453608246) internal successors, (118), 97 states have internal predecessors, (118), 45 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-28 02:48:52,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 208 transitions. [2024-11-28 02:48:52,314 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 208 transitions. Word has length 103 [2024-11-28 02:48:52,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:48:52,317 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 208 transitions. [2024-11-28 02:48:52,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-28 02:48:52,317 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 208 transitions. [2024-11-28 02:48:52,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-28 02:48:52,319 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:48:52,319 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:48:52,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 02:48:52,320 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:48:52,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:52,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1347700941, now seen corresponding path program 1 times [2024-11-28 02:48:52,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:52,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101135357] [2024-11-28 02:48:52,322 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:52,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:52,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:58,022 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-28 02:48:58,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:58,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101135357] [2024-11-28 02:48:58,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101135357] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:58,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:48:58,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-28 02:48:58,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456048683] [2024-11-28 02:48:58,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:58,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 02:48:58,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:58,024 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 02:48:58,024 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:48:58,025 INFO L87 Difference]: Start difference. First operand 146 states and 208 transitions. Second operand has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-28 02:49:01,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:49:01,513 INFO L93 Difference]: Finished difference Result 222 states and 293 transitions. [2024-11-28 02:49:01,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 02:49:01,514 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 103 [2024-11-28 02:49:01,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:49:01,516 INFO L225 Difference]: With dead ends: 222 [2024-11-28 02:49:01,516 INFO L226 Difference]: Without dead ends: 220 [2024-11-28 02:49:01,516 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=261, Invalid=669, Unknown=0, NotChecked=0, Total=930 [2024-11-28 02:49:01,517 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 286 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:49:01,518 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 424 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 02:49:01,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-11-28 02:49:01,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 156. [2024-11-28 02:49:01,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 107 states have (on average 1.2242990654205608) internal successors, (131), 107 states have internal predecessors, (131), 45 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-28 02:49:01,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 221 transitions. [2024-11-28 02:49:01,541 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 221 transitions. Word has length 103 [2024-11-28 02:49:01,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:49:01,542 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 221 transitions. [2024-11-28 02:49:01,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-28 02:49:01,542 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 221 transitions. [2024-11-28 02:49:01,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-28 02:49:01,544 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:49:01,544 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:49:01,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 02:49:01,545 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:49:01,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:49:01,545 INFO L85 PathProgramCache]: Analyzing trace with hash -667642571, now seen corresponding path program 1 times [2024-11-28 02:49:01,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:49:01,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685371766] [2024-11-28 02:49:01,546 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:49:01,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:49:01,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:49:11,749 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-28 02:49:11,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:49:11,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685371766] [2024-11-28 02:49:11,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685371766] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:49:11,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:49:11,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-28 02:49:11,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44992] [2024-11-28 02:49:11,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:49:11,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 02:49:11,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:49:11,753 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 02:49:11,753 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2024-11-28 02:49:11,753 INFO L87 Difference]: Start difference. First operand 156 states and 221 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 3 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-28 02:49:28,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:49:28,862 INFO L93 Difference]: Finished difference Result 215 states and 286 transitions. [2024-11-28 02:49:28,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 02:49:28,863 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 3 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 103 [2024-11-28 02:49:28,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:49:28,864 INFO L225 Difference]: With dead ends: 215 [2024-11-28 02:49:28,865 INFO L226 Difference]: Without dead ends: 213 [2024-11-28 02:49:28,865 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 17.7s TimeCoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2024-11-28 02:49:28,866 INFO L435 NwaCegarLoop]: 58 mSDtfsCounter, 356 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:49:28,866 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 431 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-28 02:49:28,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2024-11-28 02:49:28,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 156. [2024-11-28 02:49:28,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 107 states have (on average 1.2242990654205608) internal successors, (131), 107 states have internal predecessors, (131), 45 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-28 02:49:28,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 221 transitions. [2024-11-28 02:49:28,887 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 221 transitions. Word has length 103 [2024-11-28 02:49:28,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:49:28,888 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 221 transitions. [2024-11-28 02:49:28,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 3 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-28 02:49:28,888 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 221 transitions. [2024-11-28 02:49:28,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-28 02:49:28,890 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:49:28,890 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:49:28,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 02:49:28,890 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:49:28,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:49:28,891 INFO L85 PathProgramCache]: Analyzing trace with hash 2107348113, now seen corresponding path program 1 times [2024-11-28 02:49:28,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:49:28,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215355725] [2024-11-28 02:49:28,892 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:49:28,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:49:28,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:49:33,851 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-28 02:49:33,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:49:33,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215355725] [2024-11-28 02:49:33,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215355725] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:49:33,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:49:33,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-28 02:49:33,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114926431] [2024-11-28 02:49:33,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:49:33,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 02:49:33,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:49:33,853 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 02:49:33,853 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-11-28 02:49:33,854 INFO L87 Difference]: Start difference. First operand 156 states and 221 transitions. Second operand has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-28 02:49:35,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:49:35,907 INFO L93 Difference]: Finished difference Result 209 states and 278 transitions. [2024-11-28 02:49:35,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-28 02:49:35,907 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 104 [2024-11-28 02:49:35,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:49:35,909 INFO L225 Difference]: With dead ends: 209 [2024-11-28 02:49:35,909 INFO L226 Difference]: Without dead ends: 207 [2024-11-28 02:49:35,910 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=321, Invalid=939, Unknown=0, NotChecked=0, Total=1260 [2024-11-28 02:49:35,911 INFO L435 NwaCegarLoop]: 72 mSDtfsCounter, 270 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:49:35,911 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 467 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 02:49:35,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-11-28 02:49:35,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 153. [2024-11-28 02:49:35,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 104 states have (on average 1.2211538461538463) internal successors, (127), 104 states have internal predecessors, (127), 45 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-28 02:49:35,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 217 transitions. [2024-11-28 02:49:35,933 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 217 transitions. Word has length 104 [2024-11-28 02:49:35,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:49:35,934 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 217 transitions. [2024-11-28 02:49:35,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-28 02:49:35,934 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 217 transitions. [2024-11-28 02:49:35,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-28 02:49:35,936 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:49:35,936 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:49:35,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 02:49:35,936 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:49:35,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:49:35,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1226292630, now seen corresponding path program 1 times [2024-11-28 02:49:35,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:49:35,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072019530] [2024-11-28 02:49:35,938 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:49:35,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:49:35,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:49:50,801 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-28 02:49:50,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:49:50,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072019530] [2024-11-28 02:49:50,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072019530] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:49:50,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:49:50,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-28 02:49:50,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614509157] [2024-11-28 02:49:50,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:49:50,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 02:49:50,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:49:50,802 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 02:49:50,802 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2024-11-28 02:49:50,803 INFO L87 Difference]: Start difference. First operand 153 states and 217 transitions. Second operand has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-28 02:50:07,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:50:07,378 INFO L93 Difference]: Finished difference Result 217 states and 288 transitions. [2024-11-28 02:50:07,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 02:50:07,379 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 104 [2024-11-28 02:50:07,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:50:07,381 INFO L225 Difference]: With dead ends: 217 [2024-11-28 02:50:07,381 INFO L226 Difference]: Without dead ends: 215 [2024-11-28 02:50:07,382 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 19.2s TimeCoverageRelationStatistics Valid=294, Invalid=762, Unknown=0, NotChecked=0, Total=1056 [2024-11-28 02:50:07,384 INFO L435 NwaCegarLoop]: 66 mSDtfsCounter, 213 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:50:07,385 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 489 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-28 02:50:07,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2024-11-28 02:50:07,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 158. [2024-11-28 02:50:07,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 109 states have (on average 1.2293577981651376) internal successors, (134), 109 states have internal predecessors, (134), 45 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-28 02:50:07,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 224 transitions. [2024-11-28 02:50:07,405 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 224 transitions. Word has length 104 [2024-11-28 02:50:07,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:50:07,405 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 224 transitions. [2024-11-28 02:50:07,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-28 02:50:07,406 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 224 transitions. [2024-11-28 02:50:07,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-28 02:50:07,407 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:50:07,407 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:50:07,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 02:50:07,408 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:50:07,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:50:07,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1507671760, now seen corresponding path program 1 times [2024-11-28 02:50:07,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:50:07,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663748447] [2024-11-28 02:50:07,409 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:50:07,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:50:07,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:50:12,386 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-28 02:50:12,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:50:12,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663748447] [2024-11-28 02:50:12,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663748447] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:50:12,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:50:12,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-28 02:50:12,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155400838] [2024-11-28 02:50:12,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:50:12,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 02:50:12,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:50:12,388 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 02:50:12,388 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2024-11-28 02:50:12,389 INFO L87 Difference]: Start difference. First operand 158 states and 224 transitions. Second operand has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 3 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-28 02:50:17,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:50:17,694 INFO L93 Difference]: Finished difference Result 227 states and 297 transitions. [2024-11-28 02:50:17,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-28 02:50:17,695 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 3 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 104 [2024-11-28 02:50:17,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:50:17,697 INFO L225 Difference]: With dead ends: 227 [2024-11-28 02:50:17,697 INFO L226 Difference]: Without dead ends: 225 [2024-11-28 02:50:17,698 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=432, Invalid=1208, Unknown=0, NotChecked=0, Total=1640 [2024-11-28 02:50:17,699 INFO L435 NwaCegarLoop]: 64 mSDtfsCounter, 351 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:50:17,700 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 516 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 696 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-28 02:50:17,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2024-11-28 02:50:17,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 163. [2024-11-28 02:50:17,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 113 states have (on average 1.2212389380530972) internal successors, (138), 113 states have internal predecessors, (138), 45 states have call successors, (45), 4 states have call predecessors, (45), 4 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-28 02:50:17,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 228 transitions. [2024-11-28 02:50:17,732 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 228 transitions. Word has length 104 [2024-11-28 02:50:17,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:50:17,732 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 228 transitions. [2024-11-28 02:50:17,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 3 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-28 02:50:17,733 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 228 transitions. [2024-11-28 02:50:17,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-28 02:50:17,734 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:50:17,735 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:50:17,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 02:50:17,738 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:50:17,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:50:17,739 INFO L85 PathProgramCache]: Analyzing trace with hash 833265620, now seen corresponding path program 1 times [2024-11-28 02:50:17,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:50:17,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806233116] [2024-11-28 02:50:17,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:50:17,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:50:17,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:50:26,389 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-28 02:50:26,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:50:26,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806233116] [2024-11-28 02:50:26,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806233116] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:50:26,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:50:26,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-28 02:50:26,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352240919] [2024-11-28 02:50:26,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:50:26,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 02:50:26,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:50:26,391 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 02:50:26,391 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2024-11-28 02:50:26,392 INFO L87 Difference]: Start difference. First operand 163 states and 228 transitions. Second operand has 17 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 states have internal predecessors, (32), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-28 02:50:30,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:50:30,122 INFO L93 Difference]: Finished difference Result 216 states and 286 transitions. [2024-11-28 02:50:30,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 02:50:30,123 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 states have internal predecessors, (32), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 104 [2024-11-28 02:50:30,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:50:30,125 INFO L225 Difference]: With dead ends: 216 [2024-11-28 02:50:30,125 INFO L226 Difference]: Without dead ends: 214 [2024-11-28 02:50:30,126 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=314, Invalid=808, Unknown=0, NotChecked=0, Total=1122 [2024-11-28 02:50:30,127 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 207 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:50:30,127 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 511 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 02:50:30,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2024-11-28 02:50:30,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 163. [2024-11-28 02:50:30,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 113 states have (on average 1.2212389380530972) internal successors, (138), 113 states have internal predecessors, (138), 45 states have call successors, (45), 4 states have call predecessors, (45), 4 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-28 02:50:30,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 228 transitions. [2024-11-28 02:50:30,150 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 228 transitions. Word has length 104 [2024-11-28 02:50:30,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:50:30,151 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 228 transitions. [2024-11-28 02:50:30,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 states have internal predecessors, (32), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-28 02:50:30,151 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 228 transitions. [2024-11-28 02:50:30,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-28 02:50:30,152 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:50:30,155 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:50:30,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 02:50:30,155 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:50:30,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:50:30,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1900698770, now seen corresponding path program 1 times [2024-11-28 02:50:30,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:50:30,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83097147] [2024-11-28 02:50:30,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:50:30,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:50:30,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:50:45,294 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-28 02:50:45,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:50:45,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83097147] [2024-11-28 02:50:45,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83097147] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:50:45,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:50:45,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-28 02:50:45,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244336262] [2024-11-28 02:50:45,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:50:45,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 02:50:45,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:50:45,297 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 02:50:45,297 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2024-11-28 02:50:45,298 INFO L87 Difference]: Start difference. First operand 163 states and 228 transitions. Second operand has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 3 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-28 02:50:54,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:50:54,634 INFO L93 Difference]: Finished difference Result 210 states and 279 transitions. [2024-11-28 02:50:54,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 02:50:54,635 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 3 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 104 [2024-11-28 02:50:54,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:50:54,636 INFO L225 Difference]: With dead ends: 210 [2024-11-28 02:50:54,636 INFO L226 Difference]: Without dead ends: 208 [2024-11-28 02:50:54,636 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=357, Invalid=903, Unknown=0, NotChecked=0, Total=1260 [2024-11-28 02:50:54,637 INFO L435 NwaCegarLoop]: 62 mSDtfsCounter, 306 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:50:54,637 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 494 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-28 02:50:54,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-11-28 02:50:54,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 161. [2024-11-28 02:50:54,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 111 states have (on average 1.2162162162162162) internal successors, (135), 111 states have internal predecessors, (135), 45 states have call successors, (45), 4 states have call predecessors, (45), 4 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-28 02:50:54,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 225 transitions. [2024-11-28 02:50:54,655 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 225 transitions. Word has length 104 [2024-11-28 02:50:54,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:50:54,655 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 225 transitions. [2024-11-28 02:50:54,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 3 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-28 02:50:54,655 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 225 transitions. [2024-11-28 02:50:54,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-28 02:50:54,657 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:50:54,657 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:50:54,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 02:50:54,658 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:50:54,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:50:54,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1605505311, now seen corresponding path program 1 times [2024-11-28 02:50:54,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:50:54,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776515038] [2024-11-28 02:50:54,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:50:54,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:50:54,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:51:14,221 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-28 02:51:14,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:51:14,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776515038] [2024-11-28 02:51:14,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776515038] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:51:14,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:51:14,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-28 02:51:14,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644341067] [2024-11-28 02:51:14,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:51:14,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 02:51:14,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:51:14,223 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 02:51:14,223 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2024-11-28 02:51:14,224 INFO L87 Difference]: Start difference. First operand 161 states and 225 transitions. Second operand has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-28 02:51:28,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:51:28,193 INFO L93 Difference]: Finished difference Result 224 states and 294 transitions. [2024-11-28 02:51:28,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 02:51:28,195 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 104 [2024-11-28 02:51:28,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:51:28,197 INFO L225 Difference]: With dead ends: 224 [2024-11-28 02:51:28,197 INFO L226 Difference]: Without dead ends: 222 [2024-11-28 02:51:28,200 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 19.1s TimeCoverageRelationStatistics Valid=344, Invalid=916, Unknown=0, NotChecked=0, Total=1260 [2024-11-28 02:51:28,201 INFO L435 NwaCegarLoop]: 65 mSDtfsCounter, 193 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:51:28,201 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 490 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-28 02:51:28,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-11-28 02:51:28,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 167. [2024-11-28 02:51:28,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 117 states have (on average 1.2222222222222223) internal successors, (143), 117 states have internal predecessors, (143), 45 states have call successors, (45), 4 states have call predecessors, (45), 4 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-28 02:51:28,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 233 transitions. [2024-11-28 02:51:28,235 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 233 transitions. Word has length 104 [2024-11-28 02:51:28,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:51:28,236 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 233 transitions. [2024-11-28 02:51:28,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-28 02:51:28,236 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 233 transitions. [2024-11-28 02:51:28,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-28 02:51:28,238 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:51:28,238 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:51:28,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 02:51:28,239 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:51:28,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:51:28,240 INFO L85 PathProgramCache]: Analyzing trace with hash -925446941, now seen corresponding path program 1 times [2024-11-28 02:51:28,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:51:28,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431296684] [2024-11-28 02:51:28,240 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:51:28,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:51:28,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:51:42,627 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-28 02:51:42,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:51:42,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431296684] [2024-11-28 02:51:42,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431296684] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:51:42,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:51:42,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-28 02:51:42,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478386322] [2024-11-28 02:51:42,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:51:42,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 02:51:42,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:51:42,629 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 02:51:42,629 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2024-11-28 02:51:42,629 INFO L87 Difference]: Start difference. First operand 167 states and 233 transitions. Second operand has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 18 states have internal predecessors, (32), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 02:51:53,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:51:53,098 INFO L93 Difference]: Finished difference Result 217 states and 287 transitions. [2024-11-28 02:51:53,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 02:51:53,099 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 18 states have internal predecessors, (32), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 104 [2024-11-28 02:51:53,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:51:53,101 INFO L225 Difference]: With dead ends: 217 [2024-11-28 02:51:53,101 INFO L226 Difference]: Without dead ends: 215 [2024-11-28 02:51:53,101 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 13.8s TimeCoverageRelationStatistics Valid=336, Invalid=924, Unknown=0, NotChecked=0, Total=1260 [2024-11-28 02:51:53,102 INFO L435 NwaCegarLoop]: 75 mSDtfsCounter, 156 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:51:53,103 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 492 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-28 02:51:53,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2024-11-28 02:51:53,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 167. [2024-11-28 02:51:53,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 117 states have (on average 1.2222222222222223) internal successors, (143), 117 states have internal predecessors, (143), 45 states have call successors, (45), 4 states have call predecessors, (45), 4 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-28 02:51:53,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 233 transitions. [2024-11-28 02:51:53,139 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 233 transitions. Word has length 104 [2024-11-28 02:51:53,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:51:53,139 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 233 transitions. [2024-11-28 02:51:53,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 18 states have internal predecessors, (32), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 02:51:53,140 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 233 transitions. [2024-11-28 02:51:53,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-28 02:51:53,141 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:51:53,141 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:51:53,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 02:51:53,142 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:51:53,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:51:53,143 INFO L85 PathProgramCache]: Analyzing trace with hash 562164537, now seen corresponding path program 1 times [2024-11-28 02:51:53,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:51:53,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062503532] [2024-11-28 02:51:53,143 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:51:53,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:51:53,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:52:07,790 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-28 02:52:07,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:52:07,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062503532] [2024-11-28 02:52:07,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062503532] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:52:07,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:52:07,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-28 02:52:07,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544737542] [2024-11-28 02:52:07,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:52:07,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 02:52:07,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:52:07,792 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 02:52:07,792 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2024-11-28 02:52:07,793 INFO L87 Difference]: Start difference. First operand 167 states and 233 transitions. Second operand has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 states have internal predecessors, (33), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 02:52:26,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:52:26,732 INFO L93 Difference]: Finished difference Result 225 states and 296 transitions. [2024-11-28 02:52:26,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 02:52:26,733 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 states have internal predecessors, (33), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 105 [2024-11-28 02:52:26,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:52:26,735 INFO L225 Difference]: With dead ends: 225 [2024-11-28 02:52:26,735 INFO L226 Difference]: Without dead ends: 223 [2024-11-28 02:52:26,736 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 20.3s TimeCoverageRelationStatistics Valid=355, Invalid=1051, Unknown=0, NotChecked=0, Total=1406 [2024-11-28 02:52:26,736 INFO L435 NwaCegarLoop]: 65 mSDtfsCounter, 332 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:52:26,736 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 520 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-28 02:52:26,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2024-11-28 02:52:26,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 170. [2024-11-28 02:52:26,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 120 states have (on average 1.225) internal successors, (147), 120 states have internal predecessors, (147), 45 states have call successors, (45), 4 states have call predecessors, (45), 4 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-28 02:52:26,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 237 transitions. [2024-11-28 02:52:26,757 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 237 transitions. Word has length 105 [2024-11-28 02:52:26,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:52:26,758 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 237 transitions. [2024-11-28 02:52:26,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 states have internal predecessors, (33), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 02:52:26,759 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 237 transitions. [2024-11-28 02:52:26,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-28 02:52:26,760 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:52:26,760 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:52:26,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 02:52:26,760 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:52:26,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:52:26,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1263229115, now seen corresponding path program 1 times [2024-11-28 02:52:26,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:52:26,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531760947] [2024-11-28 02:52:26,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:52:26,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:52:26,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:52:35,444 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-28 02:52:35,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:52:35,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531760947] [2024-11-28 02:52:35,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531760947] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:52:35,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:52:35,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-28 02:52:35,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476984144] [2024-11-28 02:52:35,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:52:35,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 02:52:35,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:52:35,446 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 02:52:35,446 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2024-11-28 02:52:35,446 INFO L87 Difference]: Start difference. First operand 170 states and 237 transitions. Second operand has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 states have internal predecessors, (33), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 02:52:42,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:52:42,089 INFO L93 Difference]: Finished difference Result 220 states and 290 transitions. [2024-11-28 02:52:42,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-28 02:52:42,090 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 states have internal predecessors, (33), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 105 [2024-11-28 02:52:42,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:52:42,091 INFO L225 Difference]: With dead ends: 220 [2024-11-28 02:52:42,091 INFO L226 Difference]: Without dead ends: 218 [2024-11-28 02:52:42,091 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=478, Invalid=1328, Unknown=0, NotChecked=0, Total=1806 [2024-11-28 02:52:42,092 INFO L435 NwaCegarLoop]: 68 mSDtfsCounter, 240 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:52:42,092 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 565 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-28 02:52:42,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2024-11-28 02:52:42,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 167. [2024-11-28 02:52:42,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 117 states have (on average 1.2222222222222223) internal successors, (143), 117 states have internal predecessors, (143), 45 states have call successors, (45), 4 states have call predecessors, (45), 4 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-28 02:52:42,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 233 transitions. [2024-11-28 02:52:42,113 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 233 transitions. Word has length 105 [2024-11-28 02:52:42,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:52:42,113 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 233 transitions. [2024-11-28 02:52:42,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 states have internal predecessors, (33), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 02:52:42,114 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 233 transitions. [2024-11-28 02:52:42,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-28 02:52:42,115 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:52:42,115 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:52:42,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 02:52:42,116 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:52:42,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:52:42,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1824291752, now seen corresponding path program 1 times [2024-11-28 02:52:42,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:52:42,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172955974] [2024-11-28 02:52:42,117 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:52:42,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:52:42,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:52:59,544 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-28 02:52:59,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:52:59,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172955974] [2024-11-28 02:52:59,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172955974] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:52:59,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:52:59,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2024-11-28 02:52:59,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082745639] [2024-11-28 02:52:59,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:52:59,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-28 02:52:59,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:52:59,546 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-28 02:52:59,547 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2024-11-28 02:52:59,547 INFO L87 Difference]: Start difference. First operand 167 states and 233 transitions. Second operand has 22 states, 22 states have (on average 1.5) internal successors, (33), 21 states have internal predecessors, (33), 5 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2024-11-28 02:53:15,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:53:15,306 INFO L93 Difference]: Finished difference Result 219 states and 289 transitions. [2024-11-28 02:53:15,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 02:53:15,308 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 21 states have internal predecessors, (33), 5 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 105 [2024-11-28 02:53:15,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:53:15,309 INFO L225 Difference]: With dead ends: 219 [2024-11-28 02:53:15,309 INFO L226 Difference]: Without dead ends: 217 [2024-11-28 02:53:15,310 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 18.6s TimeCoverageRelationStatistics Valid=394, Invalid=1166, Unknown=0, NotChecked=0, Total=1560 [2024-11-28 02:53:15,310 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 234 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:53:15,310 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 603 Invalid, 849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 769 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-11-28 02:53:15,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2024-11-28 02:53:15,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 169. [2024-11-28 02:53:15,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 119 states have (on average 1.226890756302521) internal successors, (146), 119 states have internal predecessors, (146), 45 states have call successors, (45), 4 states have call predecessors, (45), 4 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-28 02:53:15,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 236 transitions. [2024-11-28 02:53:15,326 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 236 transitions. Word has length 105 [2024-11-28 02:53:15,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:53:15,326 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 236 transitions. [2024-11-28 02:53:15,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 21 states have internal predecessors, (33), 5 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2024-11-28 02:53:15,327 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 236 transitions. [2024-11-28 02:53:15,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-28 02:53:15,328 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:53:15,328 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:53:15,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 02:53:15,328 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:53:15,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:15,329 INFO L85 PathProgramCache]: Analyzing trace with hash -909672638, now seen corresponding path program 1 times [2024-11-28 02:53:15,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:15,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832222717] [2024-11-28 02:53:15,329 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:53:15,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:15,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:53:27,658 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-28 02:53:27,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:27,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832222717] [2024-11-28 02:53:27,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832222717] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:53:27,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:53:27,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-28 02:53:27,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725667341] [2024-11-28 02:53:27,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:53:27,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 02:53:27,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:27,660 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 02:53:27,660 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2024-11-28 02:53:27,661 INFO L87 Difference]: Start difference. First operand 169 states and 236 transitions. Second operand has 18 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 18 states have internal predecessors, (33), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-28 02:53:36,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:53:36,886 INFO L93 Difference]: Finished difference Result 225 states and 295 transitions. [2024-11-28 02:53:36,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-28 02:53:36,887 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 18 states have internal predecessors, (33), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 105 [2024-11-28 02:53:36,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:53:36,889 INFO L225 Difference]: With dead ends: 225 [2024-11-28 02:53:36,889 INFO L226 Difference]: Without dead ends: 223 [2024-11-28 02:53:36,890 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=457, Invalid=1183, Unknown=0, NotChecked=0, Total=1640 [2024-11-28 02:53:36,890 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 208 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:53:36,891 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 438 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-28 02:53:36,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2024-11-28 02:53:36,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 170. [2024-11-28 02:53:36,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 120 states have (on average 1.225) internal successors, (147), 120 states have internal predecessors, (147), 45 states have call successors, (45), 4 states have call predecessors, (45), 4 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-28 02:53:36,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 237 transitions. [2024-11-28 02:53:36,916 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 237 transitions. Word has length 105 [2024-11-28 02:53:36,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:53:36,917 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 237 transitions. [2024-11-28 02:53:36,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 18 states have internal predecessors, (33), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-28 02:53:36,918 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 237 transitions. [2024-11-28 02:53:36,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-28 02:53:36,919 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:53:36,919 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:53:36,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-28 02:53:36,919 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:53:36,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:36,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1431264742, now seen corresponding path program 1 times [2024-11-28 02:53:36,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:36,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34466235] [2024-11-28 02:53:36,920 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:53:36,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:36,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:53:53,076 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-28 02:53:53,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:53,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34466235] [2024-11-28 02:53:53,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34466235] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:53:53,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:53:53,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-28 02:53:53,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991452701] [2024-11-28 02:53:53,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:53:53,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 02:53:53,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:53,079 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 02:53:53,079 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2024-11-28 02:53:53,079 INFO L87 Difference]: Start difference. First operand 170 states and 237 transitions. Second operand has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 states have internal predecessors, (33), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-28 02:54:11,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:54:11,880 INFO L93 Difference]: Finished difference Result 214 states and 284 transitions. [2024-11-28 02:54:11,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 02:54:11,881 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 states have internal predecessors, (33), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 105 [2024-11-28 02:54:11,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:54:11,883 INFO L225 Difference]: With dead ends: 214 [2024-11-28 02:54:11,883 INFO L226 Difference]: Without dead ends: 212 [2024-11-28 02:54:11,884 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 19.8s TimeCoverageRelationStatistics Valid=392, Invalid=940, Unknown=0, NotChecked=0, Total=1332 [2024-11-28 02:54:11,885 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 203 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:54:11,886 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 471 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2024-11-28 02:54:11,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2024-11-28 02:54:11,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 170. [2024-11-28 02:54:11,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 120 states have (on average 1.225) internal successors, (147), 120 states have internal predecessors, (147), 45 states have call successors, (45), 4 states have call predecessors, (45), 4 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-28 02:54:11,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 237 transitions. [2024-11-28 02:54:11,906 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 237 transitions. Word has length 105 [2024-11-28 02:54:11,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:54:11,907 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 237 transitions. [2024-11-28 02:54:11,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 states have internal predecessors, (33), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-28 02:54:11,907 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 237 transitions. [2024-11-28 02:54:11,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-28 02:54:11,908 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:54:11,909 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:54:11,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-28 02:54:11,909 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:54:11,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:54:11,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1302699648, now seen corresponding path program 1 times [2024-11-28 02:54:11,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:54:11,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909419874] [2024-11-28 02:54:11,910 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:54:11,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:54:11,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:54:32,210 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-28 02:54:32,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:54:32,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909419874] [2024-11-28 02:54:32,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909419874] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:54:32,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:54:32,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-28 02:54:32,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608430280] [2024-11-28 02:54:32,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:54:32,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 02:54:32,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:54:32,212 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 02:54:32,212 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2024-11-28 02:54:32,213 INFO L87 Difference]: Start difference. First operand 170 states and 237 transitions. Second operand has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 02:55:10,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:55:10,363 INFO L93 Difference]: Finished difference Result 214 states and 283 transitions. [2024-11-28 02:55:10,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-28 02:55:10,364 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 105 [2024-11-28 02:55:10,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:55:10,366 INFO L225 Difference]: With dead ends: 214 [2024-11-28 02:55:10,366 INFO L226 Difference]: Without dead ends: 212 [2024-11-28 02:55:10,367 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 40.1s TimeCoverageRelationStatistics Valid=475, Invalid=1331, Unknown=0, NotChecked=0, Total=1806 [2024-11-28 02:55:10,369 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 201 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:55:10,370 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 553 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 810 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2024-11-28 02:55:10,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2024-11-28 02:55:10,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 168. [2024-11-28 02:55:10,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 118 states have (on average 1.2203389830508475) internal successors, (144), 118 states have internal predecessors, (144), 45 states have call successors, (45), 4 states have call predecessors, (45), 4 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-28 02:55:10,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 234 transitions. [2024-11-28 02:55:10,390 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 234 transitions. Word has length 105 [2024-11-28 02:55:10,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:55:10,390 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 234 transitions. [2024-11-28 02:55:10,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 02:55:10,391 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 234 transitions. [2024-11-28 02:55:10,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-28 02:55:10,392 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:55:10,392 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:55:10,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-28 02:55:10,392 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:55:10,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:55:10,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1920268135, now seen corresponding path program 1 times [2024-11-28 02:55:10,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:55:10,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972510788] [2024-11-28 02:55:10,393 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:55:10,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:55:10,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:55:27,297 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-28 02:55:27,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:55:27,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972510788] [2024-11-28 02:55:27,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972510788] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:55:27,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:55:27,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-28 02:55:27,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498545269] [2024-11-28 02:55:27,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:55:27,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 02:55:27,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:55:27,299 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 02:55:27,299 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2024-11-28 02:55:27,299 INFO L87 Difference]: Start difference. First operand 168 states and 234 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-28 02:55:36,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:55:59,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:55:59,956 INFO L93 Difference]: Finished difference Result 224 states and 294 transitions. [2024-11-28 02:55:59,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-28 02:55:59,958 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 106 [2024-11-28 02:55:59,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:55:59,959 INFO L225 Difference]: With dead ends: 224 [2024-11-28 02:55:59,960 INFO L226 Difference]: Without dead ends: 222 [2024-11-28 02:55:59,960 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 30.7s TimeCoverageRelationStatistics Valid=537, Invalid=1355, Unknown=0, NotChecked=0, Total=1892 [2024-11-28 02:55:59,961 INFO L435 NwaCegarLoop]: 73 mSDtfsCounter, 165 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:55:59,962 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 528 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2024-11-28 02:55:59,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-11-28 02:55:59,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 168. [2024-11-28 02:55:59,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 118 states have (on average 1.2203389830508475) internal successors, (144), 118 states have internal predecessors, (144), 45 states have call successors, (45), 4 states have call predecessors, (45), 4 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-28 02:55:59,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 234 transitions. [2024-11-28 02:55:59,983 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 234 transitions. Word has length 106 [2024-11-28 02:55:59,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:55:59,983 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 234 transitions. [2024-11-28 02:55:59,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-28 02:55:59,984 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 234 transitions. [2024-11-28 02:55:59,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-28 02:55:59,985 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:55:59,985 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:55:59,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-28 02:55:59,985 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:55:59,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:55:59,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1673634583, now seen corresponding path program 1 times [2024-11-28 02:55:59,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:55:59,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784750353] [2024-11-28 02:55:59,986 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:55:59,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:56:00,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:56:26,705 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-28 02:56:26,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:56:26,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784750353] [2024-11-28 02:56:26,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784750353] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:56:26,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:56:26,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-28 02:56:26,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84011635] [2024-11-28 02:56:26,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:56:26,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 02:56:26,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:56:26,707 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 02:56:26,707 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2024-11-28 02:56:26,707 INFO L87 Difference]: Start difference. First operand 168 states and 234 transitions. Second operand has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-28 02:57:04,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:57:04,370 INFO L93 Difference]: Finished difference Result 213 states and 282 transitions. [2024-11-28 02:57:04,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-28 02:57:04,370 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 106 [2024-11-28 02:57:04,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:57:04,372 INFO L225 Difference]: With dead ends: 213 [2024-11-28 02:57:04,372 INFO L226 Difference]: Without dead ends: 211 [2024-11-28 02:57:04,373 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 42.8s TimeCoverageRelationStatistics Valid=555, Invalid=1425, Unknown=0, NotChecked=0, Total=1980 [2024-11-28 02:57:04,374 INFO L435 NwaCegarLoop]: 73 mSDtfsCounter, 140 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:57:04,374 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 541 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2024-11-28 02:57:04,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-11-28 02:57:04,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 160. [2024-11-28 02:57:04,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 110 states have (on average 1.209090909090909) internal successors, (133), 110 states have internal predecessors, (133), 45 states have call successors, (45), 4 states have call predecessors, (45), 4 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-28 02:57:04,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 223 transitions. [2024-11-28 02:57:04,395 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 223 transitions. Word has length 106 [2024-11-28 02:57:04,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:57:04,396 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 223 transitions. [2024-11-28 02:57:04,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-28 02:57:04,396 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 223 transitions. [2024-11-28 02:57:04,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-11-28 02:57:04,400 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:57:04,401 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 30, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 02:57:04,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-28 02:57:04,401 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:57:04,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:57:04,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1242602078, now seen corresponding path program 1 times [2024-11-28 02:57:04,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:57:04,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578078327] [2024-11-28 02:57:04,402 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:57:04,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:57:04,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:57:04,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1778 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-11-28 02:57:04,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:57:04,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578078327] [2024-11-28 02:57:04,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578078327] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:57:04,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626369847] [2024-11-28 02:57:04,537 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:57:04,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:57:04,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6a422f-b7ff-4917-aa17-060c2594d5a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:57:04,539 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6a422f-b7ff-4917-aa17-060c2594d5a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:57:04,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6a422f-b7ff-4917-aa17-060c2594d5a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:57:04,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:57:04,685 INFO L256 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:57:04,697 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:57:04,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1778 backedges. 938 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-11-28 02:57:04,829 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:57:04,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626369847] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:57:04,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:57:04,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2024-11-28 02:57:04,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229417373] [2024-11-28 02:57:04,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:57:04,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:57:04,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:57:04,831 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:57:04,831 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:57:04,832 INFO L87 Difference]: Start difference. First operand 160 states and 223 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2024-11-28 02:57:04,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:57:04,902 INFO L93 Difference]: Finished difference Result 164 states and 227 transitions. [2024-11-28 02:57:04,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:57:04,903 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 201 [2024-11-28 02:57:04,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:57:04,903 INFO L225 Difference]: With dead ends: 164 [2024-11-28 02:57:04,903 INFO L226 Difference]: Without dead ends: 0 [2024-11-28 02:57:04,904 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:57:04,905 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 11 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:57:04,905 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 121 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:57:04,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-28 02:57:04,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-28 02:57:04,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:04,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-28 02:57:04,907 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 201 [2024-11-28 02:57:04,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:57:04,907 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-28 02:57:04,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2024-11-28 02:57:04,908 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-28 02:57:04,908 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-28 02:57:04,911 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-28 02:57:04,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6a422f-b7ff-4917-aa17-060c2594d5a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 02:57:05,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6a422f-b7ff-4917-aa17-060c2594d5a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-28 02:57:05,116 INFO L422 BasicCegarLoop]: Path program 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] [2024-11-28 02:57:05,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.