./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 24a2674686e3cd976907355f3a5c851b85884bd28355ffc3fa271cccc21387fd --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-01 23:05:00,751 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-01 23:05:00,806 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-01 23:05:00,810 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-01 23:05:00,811 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-01 23:05:00,831 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-01 23:05:00,831 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-01 23:05:00,831 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-01 23:05:00,832 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-01 23:05:00,832 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-01 23:05:00,832 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-01 23:05:00,832 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-01 23:05:00,832 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-01 23:05:00,832 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-01 23:05:00,832 INFO L153 SettingsManager]: * Use SBE=true [2024-12-01 23:05:00,833 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-01 23:05:00,833 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-01 23:05:00,833 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-01 23:05:00,833 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-01 23:05:00,833 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-01 23:05:00,833 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-01 23:05:00,833 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-01 23:05:00,833 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-01 23:05:00,833 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-01 23:05:00,833 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-01 23:05:00,833 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-01 23:05:00,833 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-01 23:05:00,833 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-01 23:05:00,834 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-01 23:05:00,834 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-01 23:05:00,834 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-01 23:05:00,834 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-01 23:05:00,834 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 23:05:00,834 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-01 23:05:00,834 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-01 23:05:00,834 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-01 23:05:00,834 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-01 23:05:00,834 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 23:05:00,834 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-01 23:05:00,835 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-01 23:05:00,835 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-01 23:05:00,835 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-01 23:05:00,835 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-01 23:05:00,835 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-01 23:05:00,835 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-01 23:05:00,835 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-01 23:05:00,835 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-01 23:05:00,835 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-01 23:05:00,835 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_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 24a2674686e3cd976907355f3a5c851b85884bd28355ffc3fa271cccc21387fd [2024-12-01 23:05:01,076 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-01 23:05:01,084 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-01 23:05:01,086 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-01 23:05:01,087 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-01 23:05:01,087 INFO L274 PluginConnector]: CDTParser initialized [2024-12-01 23:05:01,089 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c [2024-12-01 23:05:03,741 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/data/efffd555c/986b54a5665c4dd0a16c099b75c1dff4/FLAG3818ba0b8 [2024-12-01 23:05:04,118 INFO L384 CDTParser]: Found 1 translation units. [2024-12-01 23:05:04,118 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/sv-benchmarks/c/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c [2024-12-01 23:05:04,139 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/data/efffd555c/986b54a5665c4dd0a16c099b75c1dff4/FLAG3818ba0b8 [2024-12-01 23:05:04,152 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/data/efffd555c/986b54a5665c4dd0a16c099b75c1dff4 [2024-12-01 23:05:04,154 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-01 23:05:04,155 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-01 23:05:04,156 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-01 23:05:04,156 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-01 23:05:04,159 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-01 23:05:04,160 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:05:04" (1/1) ... [2024-12-01 23:05:04,160 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63c86958 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:05:04, skipping insertion in model container [2024-12-01 23:05:04,160 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:05:04" (1/1) ... [2024-12-01 23:05:04,241 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-01 23:05:04,492 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_53c72f43-0672-4b5e-9657-ac61e6b2eabc/sv-benchmarks/c/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c[11742,11755] [2024-12-01 23:05:04,538 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_53c72f43-0672-4b5e-9657-ac61e6b2eabc/sv-benchmarks/c/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c[17297,17310] [2024-12-01 23:05:05,097 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-01 23:05:05,105 INFO L200 MainTranslator]: Completed pre-run [2024-12-01 23:05:05,133 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_53c72f43-0672-4b5e-9657-ac61e6b2eabc/sv-benchmarks/c/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c[11742,11755] [2024-12-01 23:05:05,142 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_53c72f43-0672-4b5e-9657-ac61e6b2eabc/sv-benchmarks/c/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c[17297,17310] [2024-12-01 23:05:05,543 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-01 23:05:05,567 INFO L204 MainTranslator]: Completed translation [2024-12-01 23:05:05,586 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:05:05 WrapperNode [2024-12-01 23:05:05,586 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-01 23:05:05,587 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-01 23:05:05,587 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-01 23:05:05,587 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-01 23:05:05,592 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:05:05" (1/1) ... [2024-12-01 23:05:05,627 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:05:05" (1/1) ... [2024-12-01 23:05:05,831 INFO L138 Inliner]: procedures = 37, calls = 22, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 5093 [2024-12-01 23:05:05,832 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-01 23:05:05,832 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-01 23:05:05,832 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-01 23:05:05,832 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-01 23:05:05,839 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:05:05" (1/1) ... [2024-12-01 23:05:05,839 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:05:05" (1/1) ... [2024-12-01 23:05:05,874 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:05:05" (1/1) ... [2024-12-01 23:05:06,019 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-12-01 23:05:06,020 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:05:05" (1/1) ... [2024-12-01 23:05:06,020 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:05:05" (1/1) ... [2024-12-01 23:05:06,124 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:05:05" (1/1) ... [2024-12-01 23:05:06,134 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:05:05" (1/1) ... [2024-12-01 23:05:06,152 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:05:05" (1/1) ... [2024-12-01 23:05:06,173 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:05:05" (1/1) ... [2024-12-01 23:05:06,183 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:05:05" (1/1) ... [2024-12-01 23:05:06,225 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-01 23:05:06,226 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-01 23:05:06,226 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-01 23:05:06,226 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-01 23:05:06,227 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:05:05" (1/1) ... [2024-12-01 23:05:06,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 23:05:06,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:05:06,254 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-01 23:05:06,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-01 23:05:06,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-01 23:05:06,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-01 23:05:06,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-01 23:05:06,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-01 23:05:06,374 INFO L234 CfgBuilder]: Building ICFG [2024-12-01 23:05:06,376 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-01 23:05:10,668 INFO L? ?]: Removed 744 outVars from TransFormulas that were not future-live. [2024-12-01 23:05:10,668 INFO L283 CfgBuilder]: Performing block encoding [2024-12-01 23:05:10,696 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-01 23:05:10,696 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-12-01 23:05:10,697 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:05:10 BoogieIcfgContainer [2024-12-01 23:05:10,697 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-01 23:05:10,699 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-01 23:05:10,699 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-01 23:05:10,703 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-01 23:05:10,703 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 11:05:04" (1/3) ... [2024-12-01 23:05:10,704 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b99dafb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:05:10, skipping insertion in model container [2024-12-01 23:05:10,704 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:05:05" (2/3) ... [2024-12-01 23:05:10,704 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b99dafb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:05:10, skipping insertion in model container [2024-12-01 23:05:10,705 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:05:10" (3/3) ... [2024-12-01 23:05:10,706 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c [2024-12-01 23:05:10,720 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-01 23:05:10,723 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c that has 1 procedures, 899 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-12-01 23:05:10,795 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-01 23:05:10,807 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;@6dcf5ecb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-01 23:05:10,807 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-12-01 23:05:10,814 INFO L276 IsEmpty]: Start isEmpty. Operand has 899 states, 896 states have (on average 1.9051339285714286) internal successors, (1707), 898 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:10,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-12-01 23:05:10,818 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:05:10,819 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:05:10,819 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:05:10,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:05:10,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1798739915, now seen corresponding path program 1 times [2024-12-01 23:05:10,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:05:10,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597201685] [2024-12-01 23:05:10,832 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:10,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:05:10,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:11,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:05:11,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:05:11,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597201685] [2024-12-01 23:05:11,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597201685] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:05:11,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:05:11,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-01 23:05:11,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956145064] [2024-12-01 23:05:11,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:05:11,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-01 23:05:11,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:05:11,051 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-01 23:05:11,051 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-01 23:05:11,055 INFO L87 Difference]: Start difference. First operand has 899 states, 896 states have (on average 1.9051339285714286) internal successors, (1707), 898 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:11,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:05:11,125 INFO L93 Difference]: Finished difference Result 1759 states and 3342 transitions. [2024-12-01 23:05:11,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-01 23:05:11,127 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-12-01 23:05:11,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:05:11,140 INFO L225 Difference]: With dead ends: 1759 [2024-12-01 23:05:11,140 INFO L226 Difference]: Without dead ends: 833 [2024-12-01 23:05:11,145 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-01 23:05:11,148 INFO L435 NwaCegarLoop]: 1638 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, 1638 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:05:11,149 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1638 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:05:11,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2024-12-01 23:05:11,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 833. [2024-12-01 23:05:11,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 831 states have (on average 1.8941034897713598) internal successors, (1574), 832 states have internal predecessors, (1574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:11,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1574 transitions. [2024-12-01 23:05:11,213 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1574 transitions. Word has length 24 [2024-12-01 23:05:11,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:05:11,213 INFO L471 AbstractCegarLoop]: Abstraction has 833 states and 1574 transitions. [2024-12-01 23:05:11,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:11,214 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1574 transitions. [2024-12-01 23:05:11,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-12-01 23:05:11,215 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:05:11,215 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:05:11,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-01 23:05:11,215 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:05:11,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:05:11,216 INFO L85 PathProgramCache]: Analyzing trace with hash 502082675, now seen corresponding path program 1 times [2024-12-01 23:05:11,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:05:11,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031677803] [2024-12-01 23:05:11,216 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:11,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:05:11,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:11,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:05:11,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:05:11,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031677803] [2024-12-01 23:05:11,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031677803] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:05:11,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:05:11,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-01 23:05:11,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807791466] [2024-12-01 23:05:11,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:05:11,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-01 23:05:11,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:05:11,417 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-01 23:05:11,417 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-01 23:05:11,417 INFO L87 Difference]: Start difference. First operand 833 states and 1574 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:11,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:05:11,534 INFO L93 Difference]: Finished difference Result 879 states and 1645 transitions. [2024-12-01 23:05:11,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 23:05:11,535 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-12-01 23:05:11,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:05:11,539 INFO L225 Difference]: With dead ends: 879 [2024-12-01 23:05:11,539 INFO L226 Difference]: Without dead ends: 833 [2024-12-01 23:05:11,540 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-01 23:05:11,541 INFO L435 NwaCegarLoop]: 1572 mSDtfsCounter, 0 mSDsluCounter, 4680 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6252 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:05:11,541 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6252 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:05:11,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2024-12-01 23:05:11,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 833. [2024-12-01 23:05:11,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 831 states have (on average 1.8567990373044525) internal successors, (1543), 832 states have internal predecessors, (1543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:11,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1543 transitions. [2024-12-01 23:05:11,565 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1543 transitions. Word has length 24 [2024-12-01 23:05:11,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:05:11,565 INFO L471 AbstractCegarLoop]: Abstraction has 833 states and 1543 transitions. [2024-12-01 23:05:11,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:11,565 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1543 transitions. [2024-12-01 23:05:11,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-12-01 23:05:11,566 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:05:11,566 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:05:11,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-01 23:05:11,567 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:05:11,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:05:11,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1974059925, now seen corresponding path program 1 times [2024-12-01 23:05:11,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:05:11,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651220746] [2024-12-01 23:05:11,568 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:11,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:05:11,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:11,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:05:11,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:05:11,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651220746] [2024-12-01 23:05:11,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651220746] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:05:11,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:05:11,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-01 23:05:11,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819642380] [2024-12-01 23:05:11,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:05:11,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 23:05:11,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:05:11,668 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 23:05:11,668 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 23:05:11,668 INFO L87 Difference]: Start difference. First operand 833 states and 1543 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:14,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:05:14,947 INFO L93 Difference]: Finished difference Result 2337 states and 4416 transitions. [2024-12-01 23:05:14,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 23:05:14,948 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-12-01 23:05:14,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:05:14,953 INFO L225 Difference]: With dead ends: 2337 [2024-12-01 23:05:14,953 INFO L226 Difference]: Without dead ends: 1584 [2024-12-01 23:05:14,954 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 23:05:14,955 INFO L435 NwaCegarLoop]: 174 mSDtfsCounter, 871 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 998 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 3275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 998 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-12-01 23:05:14,956 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [871 Valid, 181 Invalid, 3275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [998 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-12-01 23:05:14,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1584 states. [2024-12-01 23:05:14,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1584 to 1584. [2024-12-01 23:05:14,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1584 states, 1582 states have (on average 1.8445006321112516) internal successors, (2918), 1583 states have internal predecessors, (2918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:14,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 2918 transitions. [2024-12-01 23:05:14,991 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 2918 transitions. Word has length 48 [2024-12-01 23:05:14,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:05:14,991 INFO L471 AbstractCegarLoop]: Abstraction has 1584 states and 2918 transitions. [2024-12-01 23:05:14,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:14,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 2918 transitions. [2024-12-01 23:05:14,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-12-01 23:05:14,993 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:05:14,993 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:05:14,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-01 23:05:14,993 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:05:14,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:05:14,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1518044022, now seen corresponding path program 1 times [2024-12-01 23:05:14,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:05:14,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896323282] [2024-12-01 23:05:14,994 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:14,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:05:15,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:15,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:05:15,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:05:15,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896323282] [2024-12-01 23:05:15,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896323282] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:05:15,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:05:15,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-01 23:05:15,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991888017] [2024-12-01 23:05:15,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:05:15,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-01 23:05:15,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:05:15,187 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-01 23:05:15,187 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-01 23:05:15,188 INFO L87 Difference]: Start difference. First operand 1584 states and 2918 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:15,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:05:15,413 INFO L93 Difference]: Finished difference Result 2004 states and 3588 transitions. [2024-12-01 23:05:15,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-01 23:05:15,414 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-12-01 23:05:15,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:05:15,422 INFO L225 Difference]: With dead ends: 2004 [2024-12-01 23:05:15,422 INFO L226 Difference]: Without dead ends: 1962 [2024-12-01 23:05:15,423 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2024-12-01 23:05:15,424 INFO L435 NwaCegarLoop]: 1539 mSDtfsCounter, 7953 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7953 SdHoareTripleChecker+Valid, 2746 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:05:15,424 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7953 Valid, 2746 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:05:15,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1962 states. [2024-12-01 23:05:15,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1962 to 1624. [2024-12-01 23:05:15,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1624 states, 1622 states have (on average 1.8384710234278667) internal successors, (2982), 1623 states have internal predecessors, (2982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:15,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1624 states to 1624 states and 2982 transitions. [2024-12-01 23:05:15,471 INFO L78 Accepts]: Start accepts. Automaton has 1624 states and 2982 transitions. Word has length 54 [2024-12-01 23:05:15,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:05:15,471 INFO L471 AbstractCegarLoop]: Abstraction has 1624 states and 2982 transitions. [2024-12-01 23:05:15,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:15,471 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 2982 transitions. [2024-12-01 23:05:15,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-12-01 23:05:15,472 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:05:15,472 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:05:15,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-01 23:05:15,473 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:05:15,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:05:15,473 INFO L85 PathProgramCache]: Analyzing trace with hash 32878714, now seen corresponding path program 1 times [2024-12-01 23:05:15,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:05:15,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125766464] [2024-12-01 23:05:15,473 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:15,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:05:15,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:15,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:05:15,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:05:15,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125766464] [2024-12-01 23:05:15,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125766464] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:05:15,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:05:15,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-01 23:05:15,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528202539] [2024-12-01 23:05:15,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:05:15,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 23:05:15,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:05:15,573 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 23:05:15,573 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 23:05:15,573 INFO L87 Difference]: Start difference. First operand 1624 states and 2982 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:15,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:05:15,609 INFO L93 Difference]: Finished difference Result 1777 states and 3225 transitions. [2024-12-01 23:05:15,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 23:05:15,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-12-01 23:05:15,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:05:15,616 INFO L225 Difference]: With dead ends: 1777 [2024-12-01 23:05:15,616 INFO L226 Difference]: Without dead ends: 1695 [2024-12-01 23:05:15,617 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 23:05:15,618 INFO L435 NwaCegarLoop]: 1541 mSDtfsCounter, 1482 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1603 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:05:15,618 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1603 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:05:15,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1695 states. [2024-12-01 23:05:15,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1695 to 1693. [2024-12-01 23:05:15,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1693 states, 1691 states have (on average 1.8273211117681845) internal successors, (3090), 1692 states have internal predecessors, (3090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:15,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1693 states to 1693 states and 3090 transitions. [2024-12-01 23:05:15,659 INFO L78 Accepts]: Start accepts. Automaton has 1693 states and 3090 transitions. Word has length 56 [2024-12-01 23:05:15,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:05:15,660 INFO L471 AbstractCegarLoop]: Abstraction has 1693 states and 3090 transitions. [2024-12-01 23:05:15,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:15,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1693 states and 3090 transitions. [2024-12-01 23:05:15,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-12-01 23:05:15,661 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:05:15,661 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:05:15,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-01 23:05:15,661 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:05:15,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:05:15,662 INFO L85 PathProgramCache]: Analyzing trace with hash 99372226, now seen corresponding path program 1 times [2024-12-01 23:05:15,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:05:15,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165052102] [2024-12-01 23:05:15,662 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:15,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:05:15,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:15,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:05:15,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:05:15,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165052102] [2024-12-01 23:05:15,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165052102] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:05:15,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:05:15,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-01 23:05:15,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245878548] [2024-12-01 23:05:15,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:05:15,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-01 23:05:15,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:05:15,961 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-01 23:05:15,962 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-01 23:05:15,962 INFO L87 Difference]: Start difference. First operand 1693 states and 3090 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:16,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:05:16,137 INFO L93 Difference]: Finished difference Result 1846 states and 3330 transitions. [2024-12-01 23:05:16,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-01 23:05:16,138 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-12-01 23:05:16,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:05:16,144 INFO L225 Difference]: With dead ends: 1846 [2024-12-01 23:05:16,144 INFO L226 Difference]: Without dead ends: 1695 [2024-12-01 23:05:16,145 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2024-12-01 23:05:16,146 INFO L435 NwaCegarLoop]: 1536 mSDtfsCounter, 4479 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4479 SdHoareTripleChecker+Valid, 1795 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:05:16,146 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4479 Valid, 1795 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:05:16,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1695 states. [2024-12-01 23:05:16,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1695 to 1693. [2024-12-01 23:05:16,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1693 states, 1691 states have (on average 1.8261383796570076) internal successors, (3088), 1692 states have internal predecessors, (3088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:16,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1693 states to 1693 states and 3088 transitions. [2024-12-01 23:05:16,187 INFO L78 Accepts]: Start accepts. Automaton has 1693 states and 3088 transitions. Word has length 56 [2024-12-01 23:05:16,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:05:16,187 INFO L471 AbstractCegarLoop]: Abstraction has 1693 states and 3088 transitions. [2024-12-01 23:05:16,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:16,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1693 states and 3088 transitions. [2024-12-01 23:05:16,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-12-01 23:05:16,188 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:05:16,188 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:05:16,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-01 23:05:16,188 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:05:16,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:05:16,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1629151369, now seen corresponding path program 1 times [2024-12-01 23:05:16,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:05:16,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524301338] [2024-12-01 23:05:16,189 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:16,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:05:16,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:16,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:05:16,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:05:16,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524301338] [2024-12-01 23:05:16,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524301338] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:05:16,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:05:16,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-01 23:05:16,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312155723] [2024-12-01 23:05:16,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:05:16,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-01 23:05:16,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:05:16,469 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-01 23:05:16,469 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-01 23:05:16,469 INFO L87 Difference]: Start difference. First operand 1693 states and 3088 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:16,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:05:16,534 INFO L93 Difference]: Finished difference Result 1701 states and 3097 transitions. [2024-12-01 23:05:16,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-01 23:05:16,535 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-12-01 23:05:16,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:05:16,541 INFO L225 Difference]: With dead ends: 1701 [2024-12-01 23:05:16,541 INFO L226 Difference]: Without dead ends: 1699 [2024-12-01 23:05:16,542 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-01 23:05:16,542 INFO L435 NwaCegarLoop]: 1537 mSDtfsCounter, 0 mSDsluCounter, 9209 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10746 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:05:16,543 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10746 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:05:16,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1699 states. [2024-12-01 23:05:16,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1699 to 1699. [2024-12-01 23:05:16,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1699 states, 1697 states have (on average 1.8226281673541544) internal successors, (3093), 1698 states have internal predecessors, (3093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:16,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 3093 transitions. [2024-12-01 23:05:16,581 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 3093 transitions. Word has length 57 [2024-12-01 23:05:16,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:05:16,581 INFO L471 AbstractCegarLoop]: Abstraction has 1699 states and 3093 transitions. [2024-12-01 23:05:16,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:16,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 3093 transitions. [2024-12-01 23:05:16,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-12-01 23:05:16,582 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:05:16,582 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:05:16,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-01 23:05:16,583 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:05:16,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:05:16,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1409361730, now seen corresponding path program 1 times [2024-12-01 23:05:16,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:05:16,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292328509] [2024-12-01 23:05:16,583 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:16,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:05:16,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:16,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:05:16,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:05:16,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292328509] [2024-12-01 23:05:16,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292328509] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:05:16,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:05:16,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-01 23:05:16,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649630761] [2024-12-01 23:05:16,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:05:16,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 23:05:16,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:05:16,643 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 23:05:16,643 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 23:05:16,643 INFO L87 Difference]: Start difference. First operand 1699 states and 3093 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:16,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:05:16,669 INFO L93 Difference]: Finished difference Result 1869 states and 3354 transitions. [2024-12-01 23:05:16,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 23:05:16,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-12-01 23:05:16,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:05:16,675 INFO L225 Difference]: With dead ends: 1869 [2024-12-01 23:05:16,676 INFO L226 Difference]: Without dead ends: 1781 [2024-12-01 23:05:16,676 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 23:05:16,677 INFO L435 NwaCegarLoop]: 1595 mSDtfsCounter, 1496 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1663 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:05:16,677 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 1663 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:05:16,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1781 states. [2024-12-01 23:05:16,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1781 to 1779. [2024-12-01 23:05:16,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1779 states, 1777 states have (on average 1.8086662915025324) internal successors, (3214), 1778 states have internal predecessors, (3214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:16,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1779 states to 1779 states and 3214 transitions. [2024-12-01 23:05:16,718 INFO L78 Accepts]: Start accepts. Automaton has 1779 states and 3214 transitions. Word has length 58 [2024-12-01 23:05:16,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:05:16,718 INFO L471 AbstractCegarLoop]: Abstraction has 1779 states and 3214 transitions. [2024-12-01 23:05:16,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:16,719 INFO L276 IsEmpty]: Start isEmpty. Operand 1779 states and 3214 transitions. [2024-12-01 23:05:16,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-12-01 23:05:16,719 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:05:16,719 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:05:16,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-01 23:05:16,719 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:05:16,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:05:16,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1383487166, now seen corresponding path program 1 times [2024-12-01 23:05:16,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:05:16,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017302522] [2024-12-01 23:05:16,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:16,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:05:16,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:16,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:05:16,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:05:16,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017302522] [2024-12-01 23:05:16,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017302522] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:05:16,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:05:16,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-01 23:05:16,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088259974] [2024-12-01 23:05:16,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:05:16,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 23:05:16,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:05:16,780 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 23:05:16,781 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 23:05:16,781 INFO L87 Difference]: Start difference. First operand 1779 states and 3214 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:16,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:05:16,812 INFO L93 Difference]: Finished difference Result 2225 states and 3894 transitions. [2024-12-01 23:05:16,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 23:05:16,813 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-12-01 23:05:16,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:05:16,820 INFO L225 Difference]: With dead ends: 2225 [2024-12-01 23:05:16,820 INFO L226 Difference]: Without dead ends: 1990 [2024-12-01 23:05:16,821 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 23:05:16,821 INFO L435 NwaCegarLoop]: 1587 mSDtfsCounter, 1492 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 1663 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:05:16,821 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1492 Valid, 1663 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:05:16,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1990 states. [2024-12-01 23:05:16,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1990 to 1988. [2024-12-01 23:05:16,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1988 states, 1986 states have (on average 1.7754279959718027) internal successors, (3526), 1987 states have internal predecessors, (3526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:16,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1988 states to 1988 states and 3526 transitions. [2024-12-01 23:05:16,865 INFO L78 Accepts]: Start accepts. Automaton has 1988 states and 3526 transitions. Word has length 58 [2024-12-01 23:05:16,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:05:16,865 INFO L471 AbstractCegarLoop]: Abstraction has 1988 states and 3526 transitions. [2024-12-01 23:05:16,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:16,866 INFO L276 IsEmpty]: Start isEmpty. Operand 1988 states and 3526 transitions. [2024-12-01 23:05:16,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-12-01 23:05:16,866 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:05:16,866 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:05:16,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-01 23:05:16,866 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:05:16,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:05:16,867 INFO L85 PathProgramCache]: Analyzing trace with hash 696011330, now seen corresponding path program 1 times [2024-12-01 23:05:16,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:05:16,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165005620] [2024-12-01 23:05:16,867 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:16,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:05:16,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:16,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:05:16,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:05:16,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165005620] [2024-12-01 23:05:16,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165005620] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:05:16,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:05:16,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-01 23:05:16,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667018393] [2024-12-01 23:05:16,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:05:16,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 23:05:16,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:05:16,922 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 23:05:16,922 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 23:05:16,922 INFO L87 Difference]: Start difference. First operand 1988 states and 3526 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:16,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:05:16,953 INFO L93 Difference]: Finished difference Result 2828 states and 4788 transitions. [2024-12-01 23:05:16,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 23:05:16,954 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-12-01 23:05:16,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:05:16,961 INFO L225 Difference]: With dead ends: 2828 [2024-12-01 23:05:16,962 INFO L226 Difference]: Without dead ends: 2384 [2024-12-01 23:05:16,963 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 23:05:16,963 INFO L435 NwaCegarLoop]: 1585 mSDtfsCounter, 1490 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1665 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:05:16,964 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 1665 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:05:16,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2384 states. [2024-12-01 23:05:17,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2384 to 2382. [2024-12-01 23:05:17,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2382 states, 2380 states have (on average 1.723529411764706) internal successors, (4102), 2381 states have internal predecessors, (4102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:17,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2382 states to 2382 states and 4102 transitions. [2024-12-01 23:05:17,024 INFO L78 Accepts]: Start accepts. Automaton has 2382 states and 4102 transitions. Word has length 58 [2024-12-01 23:05:17,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:05:17,024 INFO L471 AbstractCegarLoop]: Abstraction has 2382 states and 4102 transitions. [2024-12-01 23:05:17,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:17,024 INFO L276 IsEmpty]: Start isEmpty. Operand 2382 states and 4102 transitions. [2024-12-01 23:05:17,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-12-01 23:05:17,024 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:05:17,025 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:05:17,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-01 23:05:17,025 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:05:17,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:05:17,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1818023102, now seen corresponding path program 1 times [2024-12-01 23:05:17,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:05:17,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945674548] [2024-12-01 23:05:17,025 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:17,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:05:17,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:17,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:05:17,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:05:17,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945674548] [2024-12-01 23:05:17,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945674548] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:05:17,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:05:17,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-01 23:05:17,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510367403] [2024-12-01 23:05:17,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:05:17,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 23:05:17,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:05:17,098 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 23:05:17,098 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 23:05:17,098 INFO L87 Difference]: Start difference. First operand 2382 states and 4102 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:17,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:05:17,151 INFO L93 Difference]: Finished difference Result 3962 states and 6432 transitions. [2024-12-01 23:05:17,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 23:05:17,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-12-01 23:05:17,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:05:17,160 INFO L225 Difference]: With dead ends: 3962 [2024-12-01 23:05:17,161 INFO L226 Difference]: Without dead ends: 3124 [2024-12-01 23:05:17,162 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 23:05:17,163 INFO L435 NwaCegarLoop]: 1583 mSDtfsCounter, 1488 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1667 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:05:17,163 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 1667 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:05:17,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3124 states. [2024-12-01 23:05:17,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3124 to 3122. [2024-12-01 23:05:17,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3122 states, 3120 states have (on average 1.653205128205128) internal successors, (5158), 3121 states have internal predecessors, (5158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:17,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3122 states to 3122 states and 5158 transitions. [2024-12-01 23:05:17,244 INFO L78 Accepts]: Start accepts. Automaton has 3122 states and 5158 transitions. Word has length 58 [2024-12-01 23:05:17,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:05:17,244 INFO L471 AbstractCegarLoop]: Abstraction has 3122 states and 5158 transitions. [2024-12-01 23:05:17,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:17,244 INFO L276 IsEmpty]: Start isEmpty. Operand 3122 states and 5158 transitions. [2024-12-01 23:05:17,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-12-01 23:05:17,244 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:05:17,244 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:05:17,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-01 23:05:17,245 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:05:17,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:05:17,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1673218114, now seen corresponding path program 1 times [2024-12-01 23:05:17,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:05:17,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981311368] [2024-12-01 23:05:17,245 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:17,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:05:17,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:17,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:05:17,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:05:17,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981311368] [2024-12-01 23:05:17,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981311368] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:05:17,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:05:17,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-01 23:05:17,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902906945] [2024-12-01 23:05:17,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:05:17,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 23:05:17,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:05:17,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 23:05:17,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 23:05:17,302 INFO L87 Difference]: Start difference. First operand 3122 states and 5158 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:17,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:05:17,370 INFO L93 Difference]: Finished difference Result 6086 states and 9432 transitions. [2024-12-01 23:05:17,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 23:05:17,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-12-01 23:05:17,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:05:17,384 INFO L225 Difference]: With dead ends: 6086 [2024-12-01 23:05:17,384 INFO L226 Difference]: Without dead ends: 4508 [2024-12-01 23:05:17,386 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 23:05:17,387 INFO L435 NwaCegarLoop]: 1597 mSDtfsCounter, 1494 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:05:17,387 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 1669 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:05:17,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4508 states. [2024-12-01 23:05:17,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4508 to 4506. [2024-12-01 23:05:17,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4506 states, 4504 states have (on average 1.5714920071047958) internal successors, (7078), 4505 states have internal predecessors, (7078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:17,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4506 states to 4506 states and 7078 transitions. [2024-12-01 23:05:17,504 INFO L78 Accepts]: Start accepts. Automaton has 4506 states and 7078 transitions. Word has length 58 [2024-12-01 23:05:17,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:05:17,505 INFO L471 AbstractCegarLoop]: Abstraction has 4506 states and 7078 transitions. [2024-12-01 23:05:17,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:17,505 INFO L276 IsEmpty]: Start isEmpty. Operand 4506 states and 7078 transitions. [2024-12-01 23:05:17,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-12-01 23:05:17,507 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:05:17,507 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:05:17,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-01 23:05:17,507 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:05:17,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:05:17,507 INFO L85 PathProgramCache]: Analyzing trace with hash 273219202, now seen corresponding path program 1 times [2024-12-01 23:05:17,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:05:17,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520570661] [2024-12-01 23:05:17,507 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:17,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:05:17,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:17,667 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-01 23:05:17,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:05:17,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520570661] [2024-12-01 23:05:17,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520570661] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:05:17,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:05:17,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-01 23:05:17,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111321049] [2024-12-01 23:05:17,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:05:17,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-01 23:05:17,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:05:17,668 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-01 23:05:17,668 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-01 23:05:17,669 INFO L87 Difference]: Start difference. First operand 4506 states and 7078 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:17,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:05:17,999 INFO L93 Difference]: Finished difference Result 19110 states and 27884 transitions. [2024-12-01 23:05:17,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-01 23:05:17,999 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-12-01 23:05:17,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:05:18,030 INFO L225 Difference]: With dead ends: 19110 [2024-12-01 23:05:18,030 INFO L226 Difference]: Without dead ends: 16996 [2024-12-01 23:05:18,036 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-12-01 23:05:18,037 INFO L435 NwaCegarLoop]: 1604 mSDtfsCounter, 6307 mSDsluCounter, 1964 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6307 SdHoareTripleChecker+Valid, 3568 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:05:18,037 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6307 Valid, 3568 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:05:18,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16996 states. [2024-12-01 23:05:18,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16996 to 7050. [2024-12-01 23:05:18,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7050 states, 7048 states have (on average 1.5127695800227015) internal successors, (10662), 7049 states have internal predecessors, (10662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:18,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7050 states to 7050 states and 10662 transitions. [2024-12-01 23:05:18,336 INFO L78 Accepts]: Start accepts. Automaton has 7050 states and 10662 transitions. Word has length 77 [2024-12-01 23:05:18,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:05:18,336 INFO L471 AbstractCegarLoop]: Abstraction has 7050 states and 10662 transitions. [2024-12-01 23:05:18,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:18,337 INFO L276 IsEmpty]: Start isEmpty. Operand 7050 states and 10662 transitions. [2024-12-01 23:05:18,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-12-01 23:05:18,339 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:05:18,339 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:05:18,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-01 23:05:18,339 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:05:18,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:05:18,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1775337602, now seen corresponding path program 1 times [2024-12-01 23:05:18,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:05:18,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649772702] [2024-12-01 23:05:18,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:18,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:05:18,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:18,504 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-01 23:05:18,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:05:18,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649772702] [2024-12-01 23:05:18,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649772702] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:05:18,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:05:18,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-01 23:05:18,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648567401] [2024-12-01 23:05:18,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:05:18,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-01 23:05:18,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:05:18,505 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-01 23:05:18,505 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-01 23:05:18,505 INFO L87 Difference]: Start difference. First operand 7050 states and 10662 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:18,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:05:18,914 INFO L93 Difference]: Finished difference Result 22070 states and 32076 transitions. [2024-12-01 23:05:18,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-01 23:05:18,914 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-12-01 23:05:18,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:05:18,940 INFO L225 Difference]: With dead ends: 22070 [2024-12-01 23:05:18,940 INFO L226 Difference]: Without dead ends: 19108 [2024-12-01 23:05:18,946 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-12-01 23:05:18,947 INFO L435 NwaCegarLoop]: 1604 mSDtfsCounter, 6351 mSDsluCounter, 2011 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6351 SdHoareTripleChecker+Valid, 3615 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:05:18,947 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6351 Valid, 3615 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:05:18,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19108 states. [2024-12-01 23:05:19,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19108 to 11066. [2024-12-01 23:05:19,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11066 states, 11064 states have (on average 1.4741503976861894) internal successors, (16310), 11065 states have internal predecessors, (16310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:19,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11066 states to 11066 states and 16310 transitions. [2024-12-01 23:05:19,233 INFO L78 Accepts]: Start accepts. Automaton has 11066 states and 16310 transitions. Word has length 77 [2024-12-01 23:05:19,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:05:19,233 INFO L471 AbstractCegarLoop]: Abstraction has 11066 states and 16310 transitions. [2024-12-01 23:05:19,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:19,233 INFO L276 IsEmpty]: Start isEmpty. Operand 11066 states and 16310 transitions. [2024-12-01 23:05:19,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-12-01 23:05:19,235 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:05:19,235 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:05:19,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-01 23:05:19,236 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:05:19,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:05:19,236 INFO L85 PathProgramCache]: Analyzing trace with hash -440131198, now seen corresponding path program 1 times [2024-12-01 23:05:19,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:05:19,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325093393] [2024-12-01 23:05:19,236 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:19,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:05:19,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:19,347 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-01 23:05:19,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:05:19,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325093393] [2024-12-01 23:05:19,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325093393] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:05:19,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:05:19,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-01 23:05:19,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891786569] [2024-12-01 23:05:19,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:05:19,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-01 23:05:19,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:05:19,348 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-01 23:05:19,348 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-01 23:05:19,348 INFO L87 Difference]: Start difference. First operand 11066 states and 16310 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:19,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:05:19,686 INFO L93 Difference]: Finished difference Result 25030 states and 36252 transitions. [2024-12-01 23:05:19,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-01 23:05:19,686 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-12-01 23:05:19,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:05:19,705 INFO L225 Difference]: With dead ends: 25030 [2024-12-01 23:05:19,705 INFO L226 Difference]: Without dead ends: 22068 [2024-12-01 23:05:19,711 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-12-01 23:05:19,711 INFO L435 NwaCegarLoop]: 1602 mSDtfsCounter, 6399 mSDsluCounter, 1960 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6399 SdHoareTripleChecker+Valid, 3562 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:05:19,712 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6399 Valid, 3562 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:05:19,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22068 states. [2024-12-01 23:05:20,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22068 to 14026. [2024-12-01 23:05:20,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14026 states, 14024 states have (on average 1.460781517398745) internal successors, (20486), 14025 states have internal predecessors, (20486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:20,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14026 states to 14026 states and 20486 transitions. [2024-12-01 23:05:20,153 INFO L78 Accepts]: Start accepts. Automaton has 14026 states and 20486 transitions. Word has length 77 [2024-12-01 23:05:20,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:05:20,153 INFO L471 AbstractCegarLoop]: Abstraction has 14026 states and 20486 transitions. [2024-12-01 23:05:20,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:20,153 INFO L276 IsEmpty]: Start isEmpty. Operand 14026 states and 20486 transitions. [2024-12-01 23:05:20,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-12-01 23:05:20,156 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:05:20,157 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:05:20,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-01 23:05:20,157 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:05:20,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:05:20,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1340801666, now seen corresponding path program 1 times [2024-12-01 23:05:20,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:05:20,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838354376] [2024-12-01 23:05:20,158 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:20,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:05:20,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:20,349 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-01 23:05:20,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:05:20,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838354376] [2024-12-01 23:05:20,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838354376] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:05:20,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:05:20,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-01 23:05:20,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262331146] [2024-12-01 23:05:20,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:05:20,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-01 23:05:20,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:05:20,350 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-01 23:05:20,350 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-01 23:05:20,351 INFO L87 Difference]: Start difference. First operand 14026 states and 20486 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:20,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:05:20,976 INFO L93 Difference]: Finished difference Result 27990 states and 40428 transitions. [2024-12-01 23:05:20,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-01 23:05:20,977 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-12-01 23:05:20,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:05:21,011 INFO L225 Difference]: With dead ends: 27990 [2024-12-01 23:05:21,011 INFO L226 Difference]: Without dead ends: 25028 [2024-12-01 23:05:21,019 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-12-01 23:05:21,020 INFO L435 NwaCegarLoop]: 1602 mSDtfsCounter, 6355 mSDsluCounter, 2002 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6355 SdHoareTripleChecker+Valid, 3604 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:05:21,020 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6355 Valid, 3604 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:05:21,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25028 states. [2024-12-01 23:05:21,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25028 to 16986. [2024-12-01 23:05:21,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16986 states, 16984 states have (on average 1.4520725388601037) internal successors, (24662), 16985 states have internal predecessors, (24662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:21,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16986 states to 16986 states and 24662 transitions. [2024-12-01 23:05:21,491 INFO L78 Accepts]: Start accepts. Automaton has 16986 states and 24662 transitions. Word has length 77 [2024-12-01 23:05:21,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:05:21,491 INFO L471 AbstractCegarLoop]: Abstraction has 16986 states and 24662 transitions. [2024-12-01 23:05:21,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:21,491 INFO L276 IsEmpty]: Start isEmpty. Operand 16986 states and 24662 transitions. [2024-12-01 23:05:21,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-12-01 23:05:21,494 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:05:21,494 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:05:21,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-01 23:05:21,494 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:05:21,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:05:21,495 INFO L85 PathProgramCache]: Analyzing trace with hash 537075586, now seen corresponding path program 1 times [2024-12-01 23:05:21,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:05:21,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639668015] [2024-12-01 23:05:21,495 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:21,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:05:21,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:21,635 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-01 23:05:21,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:05:21,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639668015] [2024-12-01 23:05:21,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639668015] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:05:21,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:05:21,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-01 23:05:21,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970855045] [2024-12-01 23:05:21,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:05:21,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-01 23:05:21,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:05:21,637 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-01 23:05:21,637 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-01 23:05:21,637 INFO L87 Difference]: Start difference. First operand 16986 states and 24662 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:22,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:05:22,172 INFO L93 Difference]: Finished difference Result 30950 states and 44604 transitions. [2024-12-01 23:05:22,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-01 23:05:22,172 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-12-01 23:05:22,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:05:22,206 INFO L225 Difference]: With dead ends: 30950 [2024-12-01 23:05:22,206 INFO L226 Difference]: Without dead ends: 27988 [2024-12-01 23:05:22,216 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-12-01 23:05:22,216 INFO L435 NwaCegarLoop]: 1601 mSDtfsCounter, 6307 mSDsluCounter, 2097 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6307 SdHoareTripleChecker+Valid, 3698 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:05:22,216 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6307 Valid, 3698 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:05:22,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27988 states. [2024-12-01 23:05:22,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27988 to 19946. [2024-12-01 23:05:22,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19946 states, 19944 states have (on average 1.4459486562374648) internal successors, (28838), 19945 states have internal predecessors, (28838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:22,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19946 states to 19946 states and 28838 transitions. [2024-12-01 23:05:22,653 INFO L78 Accepts]: Start accepts. Automaton has 19946 states and 28838 transitions. Word has length 77 [2024-12-01 23:05:22,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:05:22,654 INFO L471 AbstractCegarLoop]: Abstraction has 19946 states and 28838 transitions. [2024-12-01 23:05:22,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:22,654 INFO L276 IsEmpty]: Start isEmpty. Operand 19946 states and 28838 transitions. [2024-12-01 23:05:22,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-12-01 23:05:22,656 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:05:22,656 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:05:22,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-01 23:05:22,656 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:05:22,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:05:22,657 INFO L85 PathProgramCache]: Analyzing trace with hash 895246760, now seen corresponding path program 1 times [2024-12-01 23:05:22,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:05:22,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970242058] [2024-12-01 23:05:22,657 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:22,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:05:22,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:22,750 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:05:22,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:05:22,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970242058] [2024-12-01 23:05:22,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970242058] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:05:22,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:05:22,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-01 23:05:22,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680909706] [2024-12-01 23:05:22,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:05:22,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 23:05:22,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:05:22,752 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 23:05:22,752 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 23:05:22,752 INFO L87 Difference]: Start difference. First operand 19946 states and 28838 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:23,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:05:23,187 INFO L93 Difference]: Finished difference Result 38350 states and 54824 transitions. [2024-12-01 23:05:23,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 23:05:23,188 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-12-01 23:05:23,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:05:23,200 INFO L225 Difference]: With dead ends: 38350 [2024-12-01 23:05:23,200 INFO L226 Difference]: Without dead ends: 19948 [2024-12-01 23:05:23,206 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 23:05:23,206 INFO L435 NwaCegarLoop]: 1577 mSDtfsCounter, 45 mSDsluCounter, 1531 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3108 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:05:23,207 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3108 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:05:23,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19948 states. [2024-12-01 23:05:23,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19948 to 19946. [2024-12-01 23:05:23,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19946 states, 19944 states have (on average 1.4311070998796631) internal successors, (28542), 19945 states have internal predecessors, (28542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:23,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19946 states to 19946 states and 28542 transitions. [2024-12-01 23:05:23,624 INFO L78 Accepts]: Start accepts. Automaton has 19946 states and 28542 transitions. Word has length 78 [2024-12-01 23:05:23,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:05:23,624 INFO L471 AbstractCegarLoop]: Abstraction has 19946 states and 28542 transitions. [2024-12-01 23:05:23,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:23,624 INFO L276 IsEmpty]: Start isEmpty. Operand 19946 states and 28542 transitions. [2024-12-01 23:05:23,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-12-01 23:05:23,625 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:05:23,625 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:05:23,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-01 23:05:23,626 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:05:23,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:05:23,626 INFO L85 PathProgramCache]: Analyzing trace with hash -615640646, now seen corresponding path program 1 times [2024-12-01 23:05:23,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:05:23,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910388326] [2024-12-01 23:05:23,626 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:23,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:05:23,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:23,714 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:05:23,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:05:23,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910388326] [2024-12-01 23:05:23,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910388326] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:05:23,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:05:23,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-01 23:05:23,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799565933] [2024-12-01 23:05:23,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:05:23,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 23:05:23,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:05:23,716 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 23:05:23,716 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 23:05:23,716 INFO L87 Difference]: Start difference. First operand 19946 states and 28542 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:23,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:05:23,955 INFO L93 Difference]: Finished difference Result 26833 states and 38236 transitions. [2024-12-01 23:05:23,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 23:05:23,956 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2024-12-01 23:05:23,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:05:23,965 INFO L225 Difference]: With dead ends: 26833 [2024-12-01 23:05:23,965 INFO L226 Difference]: Without dead ends: 8431 [2024-12-01 23:05:23,974 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 23:05:23,975 INFO L435 NwaCegarLoop]: 1575 mSDtfsCounter, 39 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 3105 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:05:23,975 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 3105 Invalid, 5 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:05:23,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8431 states. [2024-12-01 23:05:24,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8431 to 8423. [2024-12-01 23:05:24,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8423 states, 8421 states have (on average 1.4766654791592448) internal successors, (12435), 8422 states have internal predecessors, (12435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:24,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8423 states to 8423 states and 12435 transitions. [2024-12-01 23:05:24,234 INFO L78 Accepts]: Start accepts. Automaton has 8423 states and 12435 transitions. Word has length 79 [2024-12-01 23:05:24,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:05:24,235 INFO L471 AbstractCegarLoop]: Abstraction has 8423 states and 12435 transitions. [2024-12-01 23:05:24,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:24,235 INFO L276 IsEmpty]: Start isEmpty. Operand 8423 states and 12435 transitions. [2024-12-01 23:05:24,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-12-01 23:05:24,236 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:05:24,236 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:05:24,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-01 23:05:24,237 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:05:24,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:05:24,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1683802150, now seen corresponding path program 1 times [2024-12-01 23:05:24,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:05:24,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672899492] [2024-12-01 23:05:24,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:24,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:05:24,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:24,358 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:05:24,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:05:24,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672899492] [2024-12-01 23:05:24,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672899492] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:05:24,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:05:24,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-01 23:05:24,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44338178] [2024-12-01 23:05:24,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:05:24,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 23:05:24,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:05:24,359 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 23:05:24,359 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 23:05:24,359 INFO L87 Difference]: Start difference. First operand 8423 states and 12435 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:24,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:05:24,513 INFO L93 Difference]: Finished difference Result 11859 states and 17221 transitions. [2024-12-01 23:05:24,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 23:05:24,514 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-12-01 23:05:24,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:05:24,521 INFO L225 Difference]: With dead ends: 11859 [2024-12-01 23:05:24,521 INFO L226 Difference]: Without dead ends: 4993 [2024-12-01 23:05:24,526 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 23:05:24,527 INFO L435 NwaCegarLoop]: 1569 mSDtfsCounter, 41 mSDsluCounter, 1515 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 3084 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:05:24,527 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 3084 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:05:24,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4993 states. [2024-12-01 23:05:24,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4993 to 4991. [2024-12-01 23:05:24,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4991 states, 4989 states have (on average 1.5231509320505112) internal successors, (7599), 4990 states have internal predecessors, (7599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:24,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4991 states to 4991 states and 7599 transitions. [2024-12-01 23:05:24,659 INFO L78 Accepts]: Start accepts. Automaton has 4991 states and 7599 transitions. Word has length 80 [2024-12-01 23:05:24,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:05:24,659 INFO L471 AbstractCegarLoop]: Abstraction has 4991 states and 7599 transitions. [2024-12-01 23:05:24,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:24,659 INFO L276 IsEmpty]: Start isEmpty. Operand 4991 states and 7599 transitions. [2024-12-01 23:05:24,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-12-01 23:05:24,660 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:05:24,661 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:05:24,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-01 23:05:24,661 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:05:24,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:05:24,661 INFO L85 PathProgramCache]: Analyzing trace with hash 263472268, now seen corresponding path program 1 times [2024-12-01 23:05:24,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:05:24,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886124947] [2024-12-01 23:05:24,661 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:24,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:05:24,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:24,781 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:05:24,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:05:24,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886124947] [2024-12-01 23:05:24,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886124947] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:05:24,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:05:24,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-01 23:05:24,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565846855] [2024-12-01 23:05:24,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:05:24,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 23:05:24,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:05:24,782 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 23:05:24,782 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 23:05:24,782 INFO L87 Difference]: Start difference. First operand 4991 states and 7599 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:24,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:05:24,861 INFO L93 Difference]: Finished difference Result 6711 states and 9967 transitions. [2024-12-01 23:05:24,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 23:05:24,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2024-12-01 23:05:24,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:05:24,866 INFO L225 Difference]: With dead ends: 6711 [2024-12-01 23:05:24,866 INFO L226 Difference]: Without dead ends: 3277 [2024-12-01 23:05:24,868 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 23:05:24,869 INFO L435 NwaCegarLoop]: 1562 mSDtfsCounter, 38 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 3069 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:05:24,870 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 3069 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:05:24,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3277 states. [2024-12-01 23:05:24,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3277 to 3275. [2024-12-01 23:05:24,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3275 states, 3273 states have (on average 1.590895203177513) internal successors, (5207), 3274 states have internal predecessors, (5207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:24,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3275 states to 3275 states and 5207 transitions. [2024-12-01 23:05:24,952 INFO L78 Accepts]: Start accepts. Automaton has 3275 states and 5207 transitions. Word has length 82 [2024-12-01 23:05:24,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:05:24,953 INFO L471 AbstractCegarLoop]: Abstraction has 3275 states and 5207 transitions. [2024-12-01 23:05:24,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:24,953 INFO L276 IsEmpty]: Start isEmpty. Operand 3275 states and 5207 transitions. [2024-12-01 23:05:24,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-12-01 23:05:24,954 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:05:24,954 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:05:24,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-01 23:05:24,954 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:05:24,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:05:24,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1956730946, now seen corresponding path program 1 times [2024-12-01 23:05:24,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:05:24,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316696722] [2024-12-01 23:05:24,955 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:24,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:05:24,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:25,068 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:05:25,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:05:25,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316696722] [2024-12-01 23:05:25,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316696722] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:05:25,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:05:25,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-01 23:05:25,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695387774] [2024-12-01 23:05:25,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:05:25,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 23:05:25,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:05:25,070 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 23:05:25,070 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 23:05:25,070 INFO L87 Difference]: Start difference. First operand 3275 states and 5207 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:25,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:05:25,125 INFO L93 Difference]: Finished difference Result 4137 states and 6379 transitions. [2024-12-01 23:05:25,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 23:05:25,125 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2024-12-01 23:05:25,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:05:25,129 INFO L225 Difference]: With dead ends: 4137 [2024-12-01 23:05:25,129 INFO L226 Difference]: Without dead ends: 2419 [2024-12-01 23:05:25,131 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 23:05:25,132 INFO L435 NwaCegarLoop]: 1555 mSDtfsCounter, 35 mSDsluCounter, 1499 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 3054 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:05:25,132 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 3054 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:05:25,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2419 states. [2024-12-01 23:05:25,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2419 to 2417. [2024-12-01 23:05:25,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2417 states, 2415 states have (on average 1.6662525879917185) internal successors, (4024), 2416 states have internal predecessors, (4024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:25,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2417 states to 2417 states and 4024 transitions. [2024-12-01 23:05:25,179 INFO L78 Accepts]: Start accepts. Automaton has 2417 states and 4024 transitions. Word has length 84 [2024-12-01 23:05:25,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:05:25,180 INFO L471 AbstractCegarLoop]: Abstraction has 2417 states and 4024 transitions. [2024-12-01 23:05:25,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:25,180 INFO L276 IsEmpty]: Start isEmpty. Operand 2417 states and 4024 transitions. [2024-12-01 23:05:25,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-12-01 23:05:25,180 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:05:25,181 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:05:25,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-01 23:05:25,181 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:05:25,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:05:25,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1389986160, now seen corresponding path program 1 times [2024-12-01 23:05:25,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:05:25,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436281834] [2024-12-01 23:05:25,181 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:25,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:05:25,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:26,206 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:05:26,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:05:26,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436281834] [2024-12-01 23:05:26,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436281834] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:05:26,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801406564] [2024-12-01 23:05:26,206 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:26,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:05:26,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:05:26,208 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:05:26,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-01 23:05:26,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:26,344 INFO L256 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-12-01 23:05:26,348 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:05:26,689 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:05:26,690 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:05:27,035 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:05:27,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801406564] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 23:05:27,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 23:05:27,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 6] total 22 [2024-12-01 23:05:27,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353784197] [2024-12-01 23:05:27,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 23:05:27,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-12-01 23:05:27,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:05:27,037 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-12-01 23:05:27,037 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2024-12-01 23:05:27,037 INFO L87 Difference]: Start difference. First operand 2417 states and 4024 transitions. Second operand has 22 states, 22 states have (on average 11.136363636363637) internal successors, (245), 22 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:30,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:05:30,860 INFO L93 Difference]: Finished difference Result 9420 states and 13221 transitions. [2024-12-01 23:05:30,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-12-01 23:05:30,861 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 11.136363636363637) internal successors, (245), 22 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2024-12-01 23:05:30,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:05:30,867 INFO L225 Difference]: With dead ends: 9420 [2024-12-01 23:05:30,867 INFO L226 Difference]: Without dead ends: 8474 [2024-12-01 23:05:30,869 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2341 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1137, Invalid=6173, Unknown=0, NotChecked=0, Total=7310 [2024-12-01 23:05:30,870 INFO L435 NwaCegarLoop]: 1538 mSDtfsCounter, 14385 mSDsluCounter, 9715 mSDsCounter, 0 mSdLazyCounter, 2056 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14385 SdHoareTripleChecker+Valid, 11253 SdHoareTripleChecker+Invalid, 2151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 2056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-12-01 23:05:30,870 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14385 Valid, 11253 Invalid, 2151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 2056 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-12-01 23:05:30,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8474 states. [2024-12-01 23:05:31,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8474 to 7756. [2024-12-01 23:05:31,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7756 states, 7754 states have (on average 1.4108847046685582) internal successors, (10940), 7755 states have internal predecessors, (10940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:31,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7756 states to 7756 states and 10940 transitions. [2024-12-01 23:05:31,015 INFO L78 Accepts]: Start accepts. Automaton has 7756 states and 10940 transitions. Word has length 86 [2024-12-01 23:05:31,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:05:31,015 INFO L471 AbstractCegarLoop]: Abstraction has 7756 states and 10940 transitions. [2024-12-01 23:05:31,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 11.136363636363637) internal successors, (245), 22 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:31,016 INFO L276 IsEmpty]: Start isEmpty. Operand 7756 states and 10940 transitions. [2024-12-01 23:05:31,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-12-01 23:05:31,017 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:05:31,017 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:05:31,023 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-01 23:05:31,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-12-01 23:05:31,218 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:05:31,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:05:31,218 INFO L85 PathProgramCache]: Analyzing trace with hash -629409436, now seen corresponding path program 1 times [2024-12-01 23:05:31,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:05:31,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915015856] [2024-12-01 23:05:31,218 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:31,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:05:31,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:32,228 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:05:32,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:05:32,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915015856] [2024-12-01 23:05:32,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915015856] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:05:32,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137975083] [2024-12-01 23:05:32,229 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:32,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:05:32,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:05:32,230 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:05:32,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-01 23:05:32,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:32,331 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-01 23:05:32,333 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:05:32,690 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:05:32,690 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:05:33,555 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:05:33,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137975083] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 23:05:33,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 23:05:33,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2024-12-01 23:05:33,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019596833] [2024-12-01 23:05:33,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 23:05:33,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-12-01 23:05:33,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:05:33,557 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-12-01 23:05:33,557 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2024-12-01 23:05:33,557 INFO L87 Difference]: Start difference. First operand 7756 states and 10940 transitions. Second operand has 28 states, 28 states have (on average 7.821428571428571) internal successors, (219), 27 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:35,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:05:35,381 INFO L93 Difference]: Finished difference Result 33198 states and 44208 transitions. [2024-12-01 23:05:35,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-12-01 23:05:35,382 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 7.821428571428571) internal successors, (219), 27 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2024-12-01 23:05:35,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:05:35,398 INFO L225 Difference]: With dead ends: 33198 [2024-12-01 23:05:35,398 INFO L226 Difference]: Without dead ends: 27268 [2024-12-01 23:05:35,403 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=612, Invalid=2358, Unknown=0, NotChecked=0, Total=2970 [2024-12-01 23:05:35,404 INFO L435 NwaCegarLoop]: 1505 mSDtfsCounter, 21020 mSDsluCounter, 4958 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21020 SdHoareTripleChecker+Valid, 6463 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-01 23:05:35,404 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21020 Valid, 6463 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-01 23:05:35,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27268 states. [2024-12-01 23:05:36,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27268 to 27076. [2024-12-01 23:05:36,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27076 states, 27074 states have (on average 1.3288025411834232) internal successors, (35976), 27075 states have internal predecessors, (35976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:36,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27076 states to 27076 states and 35976 transitions. [2024-12-01 23:05:36,163 INFO L78 Accepts]: Start accepts. Automaton has 27076 states and 35976 transitions. Word has length 87 [2024-12-01 23:05:36,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:05:36,163 INFO L471 AbstractCegarLoop]: Abstraction has 27076 states and 35976 transitions. [2024-12-01 23:05:36,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 7.821428571428571) internal successors, (219), 27 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:36,163 INFO L276 IsEmpty]: Start isEmpty. Operand 27076 states and 35976 transitions. [2024-12-01 23:05:36,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-12-01 23:05:36,165 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:05:36,165 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:05:36,170 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-01 23:05:36,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-12-01 23:05:36,365 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:05:36,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:05:36,366 INFO L85 PathProgramCache]: Analyzing trace with hash -6722204, now seen corresponding path program 1 times [2024-12-01 23:05:36,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:05:36,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100403840] [2024-12-01 23:05:36,366 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:36,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:05:36,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:36,765 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:05:36,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:05:36,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100403840] [2024-12-01 23:05:36,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100403840] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:05:36,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356726210] [2024-12-01 23:05:36,765 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:36,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:05:36,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:05:36,767 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:05:36,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-01 23:05:36,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:36,891 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-01 23:05:36,893 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:05:37,359 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:05:37,359 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:05:38,314 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:05:38,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356726210] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 23:05:38,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 23:05:38,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-12-01 23:05:38,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251080351] [2024-12-01 23:05:38,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 23:05:38,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-12-01 23:05:38,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:05:38,317 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-12-01 23:05:38,317 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2024-12-01 23:05:38,317 INFO L87 Difference]: Start difference. First operand 27076 states and 35976 transitions. Second operand has 25 states, 25 states have (on average 9.48) internal successors, (237), 24 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:40,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:05:40,636 INFO L93 Difference]: Finished difference Result 81574 states and 106985 transitions. [2024-12-01 23:05:40,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-12-01 23:05:40,636 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 9.48) internal successors, (237), 24 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2024-12-01 23:05:40,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:05:40,678 INFO L225 Difference]: With dead ends: 81574 [2024-12-01 23:05:40,679 INFO L226 Difference]: Without dead ends: 56182 [2024-12-01 23:05:40,690 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=649, Invalid=2431, Unknown=0, NotChecked=0, Total=3080 [2024-12-01 23:05:40,690 INFO L435 NwaCegarLoop]: 1508 mSDtfsCounter, 17206 mSDsluCounter, 6406 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17206 SdHoareTripleChecker+Valid, 7914 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-01 23:05:40,691 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17206 Valid, 7914 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-01 23:05:40,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56182 states. [2024-12-01 23:05:42,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56182 to 52194. [2024-12-01 23:05:42,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52194 states, 52192 states have (on average 1.2841240036787247) internal successors, (67021), 52193 states have internal predecessors, (67021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:42,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52194 states to 52194 states and 67021 transitions. [2024-12-01 23:05:42,487 INFO L78 Accepts]: Start accepts. Automaton has 52194 states and 67021 transitions. Word has length 87 [2024-12-01 23:05:42,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:05:42,487 INFO L471 AbstractCegarLoop]: Abstraction has 52194 states and 67021 transitions. [2024-12-01 23:05:42,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 9.48) internal successors, (237), 24 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:42,487 INFO L276 IsEmpty]: Start isEmpty. Operand 52194 states and 67021 transitions. [2024-12-01 23:05:42,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-12-01 23:05:42,489 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:05:42,490 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:05:42,495 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-01 23:05:42,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-12-01 23:05:42,690 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:05:42,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:05:42,691 INFO L85 PathProgramCache]: Analyzing trace with hash 771056786, now seen corresponding path program 1 times [2024-12-01 23:05:42,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:05:42,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986527366] [2024-12-01 23:05:42,691 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:42,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:05:42,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:42,995 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:05:42,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:05:42,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986527366] [2024-12-01 23:05:42,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986527366] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:05:42,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386062627] [2024-12-01 23:05:42,996 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:42,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:05:42,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:05:42,997 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:05:42,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-01 23:05:43,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:43,114 INFO L256 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-01 23:05:43,117 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:05:43,547 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:05:43,547 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:05:44,147 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:05:44,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386062627] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 23:05:44,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 23:05:44,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2024-12-01 23:05:44,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592719345] [2024-12-01 23:05:44,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 23:05:44,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-12-01 23:05:44,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:05:44,148 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-12-01 23:05:44,148 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2024-12-01 23:05:44,148 INFO L87 Difference]: Start difference. First operand 52194 states and 67021 transitions. Second operand has 23 states, 23 states have (on average 8.391304347826088) internal successors, (193), 22 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:45,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:05:45,610 INFO L93 Difference]: Finished difference Result 102986 states and 131812 transitions. [2024-12-01 23:05:45,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-01 23:05:45,610 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 8.391304347826088) internal successors, (193), 22 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2024-12-01 23:05:45,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:05:45,648 INFO L225 Difference]: With dead ends: 102986 [2024-12-01 23:05:45,648 INFO L226 Difference]: Without dead ends: 54118 [2024-12-01 23:05:45,672 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=269, Invalid=787, Unknown=0, NotChecked=0, Total=1056 [2024-12-01 23:05:45,672 INFO L435 NwaCegarLoop]: 1535 mSDtfsCounter, 10829 mSDsluCounter, 3335 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10829 SdHoareTripleChecker+Valid, 4870 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-01 23:05:45,672 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10829 Valid, 4870 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-01 23:05:45,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54118 states. [2024-12-01 23:05:47,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54118 to 52834. [2024-12-01 23:05:47,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52834 states, 52832 states have (on average 1.2744170199878861) internal successors, (67330), 52833 states have internal predecessors, (67330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:47,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52834 states to 52834 states and 67330 transitions. [2024-12-01 23:05:47,170 INFO L78 Accepts]: Start accepts. Automaton has 52834 states and 67330 transitions. Word has length 88 [2024-12-01 23:05:47,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:05:47,171 INFO L471 AbstractCegarLoop]: Abstraction has 52834 states and 67330 transitions. [2024-12-01 23:05:47,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 8.391304347826088) internal successors, (193), 22 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:47,171 INFO L276 IsEmpty]: Start isEmpty. Operand 52834 states and 67330 transitions. [2024-12-01 23:05:47,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-12-01 23:05:47,172 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:05:47,172 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:05:47,178 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-01 23:05:47,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-12-01 23:05:47,372 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:05:47,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:05:47,373 INFO L85 PathProgramCache]: Analyzing trace with hash -861720172, now seen corresponding path program 1 times [2024-12-01 23:05:47,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:05:47,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681803566] [2024-12-01 23:05:47,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:47,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:05:47,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:47,661 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:05:47,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:05:47,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681803566] [2024-12-01 23:05:47,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681803566] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:05:47,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484947319] [2024-12-01 23:05:47,661 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:47,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:05:47,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:05:47,663 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:05:47,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-01 23:05:47,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:47,787 INFO L256 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-12-01 23:05:47,789 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:05:48,327 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:05:48,327 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:05:49,609 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:05:49,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484947319] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 23:05:49,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 23:05:49,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 13] total 30 [2024-12-01 23:05:49,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701092409] [2024-12-01 23:05:49,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 23:05:49,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-12-01 23:05:49,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:05:49,611 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-12-01 23:05:49,611 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=708, Unknown=0, NotChecked=0, Total=870 [2024-12-01 23:05:49,611 INFO L87 Difference]: Start difference. First operand 52834 states and 67330 transitions. Second operand has 30 states, 30 states have (on average 8.3) internal successors, (249), 30 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:53,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:05:53,187 INFO L93 Difference]: Finished difference Result 156448 states and 198441 transitions. [2024-12-01 23:05:53,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-12-01 23:05:53,187 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 8.3) internal successors, (249), 30 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2024-12-01 23:05:53,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:05:53,262 INFO L225 Difference]: With dead ends: 156448 [2024-12-01 23:05:53,262 INFO L226 Difference]: Without dead ends: 108030 [2024-12-01 23:05:53,287 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=472, Invalid=1508, Unknown=0, NotChecked=0, Total=1980 [2024-12-01 23:05:53,287 INFO L435 NwaCegarLoop]: 1520 mSDtfsCounter, 13820 mSDsluCounter, 4968 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13820 SdHoareTripleChecker+Valid, 6488 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-01 23:05:53,288 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13820 Valid, 6488 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-01 23:05:53,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108030 states. [2024-12-01 23:05:55,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108030 to 106618. [2024-12-01 23:05:56,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106618 states, 106616 states have (on average 1.2515007128385984) internal successors, (133430), 106617 states have internal predecessors, (133430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:56,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106618 states to 106618 states and 133430 transitions. [2024-12-01 23:05:56,138 INFO L78 Accepts]: Start accepts. Automaton has 106618 states and 133430 transitions. Word has length 89 [2024-12-01 23:05:56,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:05:56,139 INFO L471 AbstractCegarLoop]: Abstraction has 106618 states and 133430 transitions. [2024-12-01 23:05:56,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 8.3) internal successors, (249), 30 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:05:56,139 INFO L276 IsEmpty]: Start isEmpty. Operand 106618 states and 133430 transitions. [2024-12-01 23:05:56,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-12-01 23:05:56,142 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:05:56,142 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:05:56,147 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-01 23:05:56,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-12-01 23:05:56,342 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:05:56,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:05:56,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1712352226, now seen corresponding path program 1 times [2024-12-01 23:05:56,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:05:56,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175186897] [2024-12-01 23:05:56,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:56,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:05:56,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:57,088 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:05:57,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:05:57,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175186897] [2024-12-01 23:05:57,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175186897] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:05:57,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674012401] [2024-12-01 23:05:57,089 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:57,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:05:57,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:05:57,090 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:05:57,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-01 23:05:57,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:57,202 INFO L256 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-12-01 23:05:57,204 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:05:57,844 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:05:57,844 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:05:59,052 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:05:59,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674012401] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 23:05:59,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 23:05:59,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2024-12-01 23:05:59,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532994103] [2024-12-01 23:05:59,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 23:05:59,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-12-01 23:05:59,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:05:59,054 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-12-01 23:05:59,054 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2024-12-01 23:05:59,054 INFO L87 Difference]: Start difference. First operand 106618 states and 133430 transitions. Second operand has 26 states, 26 states have (on average 8.346153846153847) internal successors, (217), 26 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:06:02,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:06:02,931 INFO L93 Difference]: Finished difference Result 130640 states and 164457 transitions. [2024-12-01 23:06:02,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-01 23:06:02,931 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 8.346153846153847) internal successors, (217), 26 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2024-12-01 23:06:02,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:06:03,018 INFO L225 Difference]: With dead ends: 130640 [2024-12-01 23:06:03,019 INFO L226 Difference]: Without dead ends: 99918 [2024-12-01 23:06:03,042 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=324, Invalid=1158, Unknown=0, NotChecked=0, Total=1482 [2024-12-01 23:06:03,043 INFO L435 NwaCegarLoop]: 1504 mSDtfsCounter, 6677 mSDsluCounter, 13669 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6677 SdHoareTripleChecker+Valid, 15173 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-01 23:06:03,043 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6677 Valid, 15173 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-01 23:06:03,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99918 states. [2024-12-01 23:06:05,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99918 to 99914. [2024-12-01 23:06:05,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99914 states, 99912 states have (on average 1.2496396829209704) internal successors, (124854), 99913 states have internal predecessors, (124854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:06:06,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99914 states to 99914 states and 124854 transitions. [2024-12-01 23:06:06,017 INFO L78 Accepts]: Start accepts. Automaton has 99914 states and 124854 transitions. Word has length 90 [2024-12-01 23:06:06,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:06:06,018 INFO L471 AbstractCegarLoop]: Abstraction has 99914 states and 124854 transitions. [2024-12-01 23:06:06,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 8.346153846153847) internal successors, (217), 26 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:06:06,018 INFO L276 IsEmpty]: Start isEmpty. Operand 99914 states and 124854 transitions. [2024-12-01 23:06:06,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-12-01 23:06:06,019 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:06:06,020 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:06:06,025 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-01 23:06:06,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-12-01 23:06:06,220 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:06:06,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:06:06,220 INFO L85 PathProgramCache]: Analyzing trace with hash 693585914, now seen corresponding path program 1 times [2024-12-01 23:06:06,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:06:06,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957952005] [2024-12-01 23:06:06,221 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:06:06,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:06:06,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:06:06,759 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:06:06,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:06:06,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957952005] [2024-12-01 23:06:06,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957952005] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:06:06,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496919625] [2024-12-01 23:06:06,760 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:06:06,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:06:06,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:06:06,762 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:06:06,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-01 23:06:06,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:06:06,913 INFO L256 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-12-01 23:06:06,915 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:06:17,909 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:06:17,909 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:06:28,037 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:06:28,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496919625] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 23:06:28,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 23:06:28,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 34, 34] total 79 [2024-12-01 23:06:28,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034929637] [2024-12-01 23:06:28,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 23:06:28,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2024-12-01 23:06:28,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:06:28,039 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2024-12-01 23:06:28,039 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=966, Invalid=5196, Unknown=0, NotChecked=0, Total=6162 [2024-12-01 23:06:28,039 INFO L87 Difference]: Start difference. First operand 99914 states and 124854 transitions. Second operand has 79 states, 79 states have (on average 3.1012658227848102) internal successors, (245), 79 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:06:34,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.57s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-01 23:06:38,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-01 23:06:47,285 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-01 23:06:51,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-01 23:07:00,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-01 23:07:04,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-01 23:07:08,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-01 23:07:16,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-01 23:07:19,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.41s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-01 23:07:23,693 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.25s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-01 23:07:28,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-01 23:07:47,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-01 23:07:51,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-01 23:07:55,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-01 23:08:19,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.51s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-01 23:08:25,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-01 23:14:23,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:14:23,930 INFO L93 Difference]: Finished difference Result 251970 states and 316064 transitions. [2024-12-01 23:14:23,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 330 states. [2024-12-01 23:14:23,930 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 3.1012658227848102) internal successors, (245), 79 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2024-12-01 23:14:23,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:14:24,085 INFO L225 Difference]: With dead ends: 251970 [2024-12-01 23:14:24,086 INFO L226 Difference]: Without dead ends: 206394 [2024-12-01 23:14:24,126 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 390 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68763 ImplicationChecksByTransitivity, 401.7s TimeCoverageRelationStatistics Valid=28579, Invalid=124685, Unknown=8, NotChecked=0, Total=153272 [2024-12-01 23:14:24,126 INFO L435 NwaCegarLoop]: 1582 mSDtfsCounter, 29443 mSDsluCounter, 20906 mSDsCounter, 0 mSdLazyCounter, 8267 mSolverCounterSat, 216 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 72.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29443 SdHoareTripleChecker+Valid, 22488 SdHoareTripleChecker+Invalid, 8495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 8267 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 74.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:14:24,126 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29443 Valid, 22488 Invalid, 8495 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [216 Valid, 8267 Invalid, 12 Unknown, 0 Unchecked, 74.1s Time] [2024-12-01 23:14:24,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206394 states. [2024-12-01 23:14:28,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206394 to 99383. [2024-12-01 23:14:28,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99383 states, 99381 states have (on average 1.2492327507270002) internal successors, (124150), 99382 states have internal predecessors, (124150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:14:28,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99383 states to 99383 states and 124150 transitions. [2024-12-01 23:14:29,006 INFO L78 Accepts]: Start accepts. Automaton has 99383 states and 124150 transitions. Word has length 90 [2024-12-01 23:14:29,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:14:29,006 INFO L471 AbstractCegarLoop]: Abstraction has 99383 states and 124150 transitions. [2024-12-01 23:14:29,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 3.1012658227848102) internal successors, (245), 79 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:14:29,007 INFO L276 IsEmpty]: Start isEmpty. Operand 99383 states and 124150 transitions. [2024-12-01 23:14:29,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-12-01 23:14:29,008 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:14:29,008 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:14:29,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-12-01 23:14:29,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-12-01 23:14:29,208 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:14:29,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:14:29,209 INFO L85 PathProgramCache]: Analyzing trace with hash -906027694, now seen corresponding path program 1 times [2024-12-01 23:14:29,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:14:29,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684228398] [2024-12-01 23:14:29,209 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:14:29,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:14:29,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:14:31,721 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:14:31,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:14:31,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684228398] [2024-12-01 23:14:31,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684228398] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:14:31,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971000909] [2024-12-01 23:14:31,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:14:31,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:14:31,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:14:31,723 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:14:31,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-01 23:14:31,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:14:31,830 INFO L256 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-12-01 23:14:31,832 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:14:34,256 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:14:34,256 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:14:37,308 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:14:37,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971000909] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 23:14:37,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 23:14:37,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 16, 17] total 61 [2024-12-01 23:14:37,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616767907] [2024-12-01 23:14:37,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 23:14:37,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-12-01 23:14:37,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:14:37,309 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-12-01 23:14:37,310 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=3409, Unknown=0, NotChecked=0, Total=3660 [2024-12-01 23:14:37,310 INFO L87 Difference]: Start difference. First operand 99383 states and 124150 transitions. Second operand has 61 states, 61 states have (on average 3.9344262295081966) internal successors, (240), 61 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:15:54,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:15:54,406 INFO L93 Difference]: Finished difference Result 245313 states and 304058 transitions. [2024-12-01 23:15:54,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 217 states. [2024-12-01 23:15:54,406 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 3.9344262295081966) internal successors, (240), 61 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2024-12-01 23:15:54,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:15:54,564 INFO L225 Difference]: With dead ends: 245313 [2024-12-01 23:15:54,564 INFO L226 Difference]: Without dead ends: 212633 [2024-12-01 23:15:54,595 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 274 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26495 ImplicationChecksByTransitivity, 59.8s TimeCoverageRelationStatistics Valid=14978, Invalid=60922, Unknown=0, NotChecked=0, Total=75900 [2024-12-01 23:15:54,595 INFO L435 NwaCegarLoop]: 1636 mSDtfsCounter, 37086 mSDsluCounter, 37668 mSDsCounter, 0 mSdLazyCounter, 10339 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37086 SdHoareTripleChecker+Valid, 39304 SdHoareTripleChecker+Invalid, 10539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 10339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2024-12-01 23:15:54,595 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37086 Valid, 39304 Invalid, 10539 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [200 Valid, 10339 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2024-12-01 23:15:54,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212633 states. [2024-12-01 23:16:01,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212633 to 114937. [2024-12-01 23:16:01,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114937 states, 114935 states have (on average 1.248070648627485) internal successors, (143447), 114936 states have internal predecessors, (143447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:16:01,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114937 states to 114937 states and 143447 transitions. [2024-12-01 23:16:01,734 INFO L78 Accepts]: Start accepts. Automaton has 114937 states and 143447 transitions. Word has length 91 [2024-12-01 23:16:01,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:16:01,734 INFO L471 AbstractCegarLoop]: Abstraction has 114937 states and 143447 transitions. [2024-12-01 23:16:01,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 3.9344262295081966) internal successors, (240), 61 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:16:01,735 INFO L276 IsEmpty]: Start isEmpty. Operand 114937 states and 143447 transitions. [2024-12-01 23:16:01,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-12-01 23:16:01,736 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:16:01,736 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:16:01,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-12-01 23:16:01,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:16:01,937 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:16:01,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:16:01,937 INFO L85 PathProgramCache]: Analyzing trace with hash -139552328, now seen corresponding path program 1 times [2024-12-01 23:16:01,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:16:01,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018655047] [2024-12-01 23:16:01,937 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:16:01,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:16:01,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:16:02,614 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:16:02,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:16:02,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018655047] [2024-12-01 23:16:02,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018655047] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:16:02,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152368288] [2024-12-01 23:16:02,615 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:16:02,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:16:02,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:16:02,616 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:16:02,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-01 23:16:02,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:16:02,740 INFO L256 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-12-01 23:16:02,742 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:16:06,395 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:16:06,395 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:16:10,080 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:16:10,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152368288] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 23:16:10,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 23:16:10,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17, 20] total 46 [2024-12-01 23:16:10,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574224478] [2024-12-01 23:16:10,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 23:16:10,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-12-01 23:16:10,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:16:10,082 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-12-01 23:16:10,082 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=1821, Unknown=0, NotChecked=0, Total=2070 [2024-12-01 23:16:10,082 INFO L87 Difference]: Start difference. First operand 114937 states and 143447 transitions. Second operand has 46 states, 46 states have (on average 5.434782608695652) internal successors, (250), 46 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:16:43,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:16:43,171 INFO L93 Difference]: Finished difference Result 373868 states and 465721 transitions. [2024-12-01 23:16:43,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2024-12-01 23:16:43,171 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 5.434782608695652) internal successors, (250), 46 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2024-12-01 23:16:43,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:16:43,496 INFO L225 Difference]: With dead ends: 373868 [2024-12-01 23:16:43,496 INFO L226 Difference]: Without dead ends: 331395 [2024-12-01 23:16:43,544 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6107 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=3277, Invalid=14545, Unknown=0, NotChecked=0, Total=17822 [2024-12-01 23:16:43,544 INFO L435 NwaCegarLoop]: 1522 mSDtfsCounter, 23785 mSDsluCounter, 20140 mSDsCounter, 0 mSdLazyCounter, 1803 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23785 SdHoareTripleChecker+Valid, 21662 SdHoareTripleChecker+Invalid, 1917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-12-01 23:16:43,544 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23785 Valid, 21662 Invalid, 1917 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [114 Valid, 1803 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-12-01 23:16:43,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331395 states. [2024-12-01 23:16:50,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331395 to 99055. [2024-12-01 23:16:50,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99055 states, 99053 states have (on average 1.2468577428245484) internal successors, (123505), 99054 states have internal predecessors, (123505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:16:50,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99055 states to 99055 states and 123505 transitions. [2024-12-01 23:16:50,822 INFO L78 Accepts]: Start accepts. Automaton has 99055 states and 123505 transitions. Word has length 92 [2024-12-01 23:16:50,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:16:50,823 INFO L471 AbstractCegarLoop]: Abstraction has 99055 states and 123505 transitions. [2024-12-01 23:16:50,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 5.434782608695652) internal successors, (250), 46 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:16:50,823 INFO L276 IsEmpty]: Start isEmpty. Operand 99055 states and 123505 transitions. [2024-12-01 23:16:50,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-12-01 23:16:50,824 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:16:50,824 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:16:50,831 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-01 23:16:51,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-12-01 23:16:51,024 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:16:51,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:16:51,025 INFO L85 PathProgramCache]: Analyzing trace with hash -961726028, now seen corresponding path program 1 times [2024-12-01 23:16:51,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:16:51,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523069439] [2024-12-01 23:16:51,025 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:16:51,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:16:51,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:16:51,662 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:16:51,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:16:51,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523069439] [2024-12-01 23:16:51,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523069439] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:16:51,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455943792] [2024-12-01 23:16:51,662 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:16:51,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:16:51,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:16:51,664 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:16:51,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c72f43-0672-4b5e-9657-ac61e6b2eabc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-01 23:16:51,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:16:51,804 INFO L256 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-12-01 23:16:51,806 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:16:57,867 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:16:57,867 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:17:11,084 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:17:11,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455943792] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 23:17:11,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 23:17:11,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 31, 36] total 78 [2024-12-01 23:17:11,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893729130] [2024-12-01 23:17:11,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 23:17:11,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2024-12-01 23:17:11,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:17:11,085 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2024-12-01 23:17:11,085 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=824, Invalid=5182, Unknown=0, NotChecked=0, Total=6006 [2024-12-01 23:17:11,085 INFO L87 Difference]: Start difference. First operand 99055 states and 123505 transitions. Second operand has 78 states, 78 states have (on average 3.1153846153846154) internal successors, (243), 78 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:19:07,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:19:07,855 INFO L93 Difference]: Finished difference Result 257050 states and 320801 transitions. [2024-12-01 23:19:07,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2024-12-01 23:19:07,856 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 3.1153846153846154) internal successors, (243), 78 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2024-12-01 23:19:07,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:19:08,067 INFO L225 Difference]: With dead ends: 257050 [2024-12-01 23:19:08,067 INFO L226 Difference]: Without dead ends: 218739 [2024-12-01 23:19:08,099 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 244 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21977 ImplicationChecksByTransitivity, 95.9s TimeCoverageRelationStatistics Valid=11321, Invalid=48949, Unknown=0, NotChecked=0, Total=60270 [2024-12-01 23:19:08,100 INFO L435 NwaCegarLoop]: 1589 mSDtfsCounter, 26865 mSDsluCounter, 29206 mSDsCounter, 0 mSdLazyCounter, 8327 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26865 SdHoareTripleChecker+Valid, 30795 SdHoareTripleChecker+Invalid, 8468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 8327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2024-12-01 23:19:08,100 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26865 Valid, 30795 Invalid, 8468 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [141 Valid, 8327 Invalid, 0 Unknown, 0 Unchecked, 12.9s Time] [2024-12-01 23:19:08,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218739 states.