./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label47+token_ring.13.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label47+token_ring.13.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --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 ed3d7c65b5f276938c992de2fd71c82e0f79af5cc9147088727c012b3d12461a --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 02:02:07,160 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 02:02:07,192 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 02:02:07,244 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 02:02:07,245 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 02:02:07,249 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 02:02:07,251 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 02:02:07,256 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 02:02:07,258 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 02:02:07,264 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 02:02:07,265 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 02:02:07,267 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 02:02:07,268 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 02:02:07,270 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 02:02:07,271 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 02:02:07,275 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 02:02:07,276 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 02:02:07,277 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 02:02:07,279 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 02:02:07,283 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 02:02:07,284 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 02:02:07,285 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 02:02:07,286 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 02:02:07,287 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 02:02:07,291 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 02:02:07,292 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 02:02:07,292 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 02:02:07,293 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 02:02:07,293 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 02:02:07,294 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 02:02:07,294 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 02:02:07,295 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 02:02:07,296 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 02:02:07,297 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 02:02:07,297 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 02:02:07,298 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 02:02:07,298 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 02:02:07,298 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 02:02:07,298 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 02:02:07,299 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 02:02:07,300 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 02:02:07,301 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 02:02:07,328 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 02:02:07,328 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 02:02:07,328 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 02:02:07,329 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 02:02:07,329 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 02:02:07,329 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 02:02:07,330 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 02:02:07,330 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 02:02:07,330 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 02:02:07,330 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 02:02:07,331 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 02:02:07,331 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 02:02:07,331 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 02:02:07,332 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 02:02:07,332 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 02:02:07,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 02:02:07,332 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 02:02:07,332 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 02:02:07,332 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 02:02:07,332 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 02:02:07,333 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 02:02:07,333 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 02:02:07,333 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 02:02:07,333 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 02:02:07,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:02:07,334 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 02:02:07,334 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 02:02:07,334 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 02:02:07,334 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 02:02:07,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 02:02:07,334 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 02:02:07,334 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 02:02:07,335 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 02:02:07,335 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 02:02:07,335 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ed3d7c65b5f276938c992de2fd71c82e0f79af5cc9147088727c012b3d12461a [2021-12-16 02:02:07,561 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 02:02:07,592 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 02:02:07,594 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 02:02:07,595 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 02:02:07,596 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 02:02:07,597 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label47+token_ring.13.cil-2.c [2021-12-16 02:02:07,672 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea6e305db/62c6a342201c40889f8d692b6d1f4db9/FLAG5dfb8977e [2021-12-16 02:02:08,527 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 02:02:08,528 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label47+token_ring.13.cil-2.c [2021-12-16 02:02:08,575 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea6e305db/62c6a342201c40889f8d692b6d1f4db9/FLAG5dfb8977e [2021-12-16 02:02:09,051 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea6e305db/62c6a342201c40889f8d692b6d1f4db9 [2021-12-16 02:02:09,054 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 02:02:09,056 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 02:02:09,058 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 02:02:09,058 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 02:02:09,061 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 02:02:09,063 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:02:09" (1/1) ... [2021-12-16 02:02:09,064 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60b00b01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:02:09, skipping insertion in model container [2021-12-16 02:02:09,067 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:02:09" (1/1) ... [2021-12-16 02:02:09,073 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 02:02:09,435 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 02:02:11,125 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label47+token_ring.13.cil-2.c[377612,377625] [2021-12-16 02:02:11,148 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label47+token_ring.13.cil-2.c[383339,383352] [2021-12-16 02:02:11,378 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:02:11,387 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 02:02:12,009 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label47+token_ring.13.cil-2.c[377612,377625] [2021-12-16 02:02:12,014 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label47+token_ring.13.cil-2.c[383339,383352] [2021-12-16 02:02:12,034 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:02:12,107 INFO L208 MainTranslator]: Completed translation [2021-12-16 02:02:12,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:02:12 WrapperNode [2021-12-16 02:02:12,108 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 02:02:12,109 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 02:02:12,109 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 02:02:12,109 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 02:02:12,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:02:12" (1/1) ... [2021-12-16 02:02:12,202 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:02:12" (1/1) ... [2021-12-16 02:02:12,682 INFO L137 Inliner]: procedures = 70, calls = 80, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 13257 [2021-12-16 02:02:12,683 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 02:02:12,684 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 02:02:12,684 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 02:02:12,684 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 02:02:12,704 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:02:12" (1/1) ... [2021-12-16 02:02:12,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:02:12" (1/1) ... [2021-12-16 02:02:12,773 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:02:12" (1/1) ... [2021-12-16 02:02:12,774 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:02:12" (1/1) ... [2021-12-16 02:02:12,899 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:02:12" (1/1) ... [2021-12-16 02:02:12,931 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:02:12" (1/1) ... [2021-12-16 02:02:12,955 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:02:12" (1/1) ... [2021-12-16 02:02:13,008 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 02:02:13,009 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 02:02:13,010 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 02:02:13,010 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 02:02:13,011 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:02:12" (1/1) ... [2021-12-16 02:02:13,017 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:02:13,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 02:02:13,053 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-16 02:02:13,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-16 02:02:13,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 02:02:13,180 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-16 02:02:13,180 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-16 02:02:13,181 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-16 02:02:13,181 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-16 02:02:13,181 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-16 02:02:13,181 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-16 02:02:13,181 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-16 02:02:13,181 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-16 02:02:13,181 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-16 02:02:13,181 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-16 02:02:13,182 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-16 02:02:13,182 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-16 02:02:13,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 02:02:13,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 02:02:13,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 02:02:13,430 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 02:02:13,431 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 02:02:19,026 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 02:02:19,047 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 02:02:19,063 INFO L301 CfgBuilder]: Removed 17 assume(true) statements. [2021-12-16 02:02:19,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:02:19 BoogieIcfgContainer [2021-12-16 02:02:19,069 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 02:02:19,071 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 02:02:19,075 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 02:02:19,079 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 02:02:19,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 02:02:09" (1/3) ... [2021-12-16 02:02:19,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@227527ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:02:19, skipping insertion in model container [2021-12-16 02:02:19,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:02:12" (2/3) ... [2021-12-16 02:02:19,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@227527ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:02:19, skipping insertion in model container [2021-12-16 02:02:19,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:02:19" (3/3) ... [2021-12-16 02:02:19,081 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label47+token_ring.13.cil-2.c [2021-12-16 02:02:19,089 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 02:02:19,090 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-16 02:02:19,148 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 02:02:19,153 INFO L339 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 02:02:19,154 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-16 02:02:19,210 INFO L276 IsEmpty]: Start isEmpty. Operand has 2590 states, 2554 states have (on average 1.841816758026625) internal successors, (4704), 2557 states have internal predecessors, (4704), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-16 02:02:19,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-16 02:02:19,225 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:02:19,226 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:02:19,226 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:02:19,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:02:19,231 INFO L85 PathProgramCache]: Analyzing trace with hash -521467325, now seen corresponding path program 1 times [2021-12-16 02:02:19,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:02:19,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819529240] [2021-12-16 02:02:19,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:02:19,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:02:19,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:19,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:02:19,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:19,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:02:19,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:19,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:02:19,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:19,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:02:19,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:19,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:02:19,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:19,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:02:19,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:02:19,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819529240] [2021-12-16 02:02:19,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819529240] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:02:19,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:02:19,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 02:02:19,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138186185] [2021-12-16 02:02:19,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:02:19,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 02:02:19,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:02:19,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 02:02:19,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 02:02:19,723 INFO L87 Difference]: Start difference. First operand has 2590 states, 2554 states have (on average 1.841816758026625) internal successors, (4704), 2557 states have internal predecessors, (4704), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:21,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:02:21,781 INFO L93 Difference]: Finished difference Result 5325 states and 9765 transitions. [2021-12-16 02:02:21,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 02:02:21,784 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-16 02:02:21,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:02:21,802 INFO L225 Difference]: With dead ends: 5325 [2021-12-16 02:02:21,803 INFO L226 Difference]: Without dead ends: 2676 [2021-12-16 02:02:21,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:02:21,812 INFO L933 BasicCegarLoop]: 4729 mSDtfsCounter, 1107 mSDsluCounter, 12512 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 17241 SdHoareTripleChecker+Invalid, 817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-16 02:02:21,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1132 Valid, 17241 Invalid, 817 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-16 02:02:21,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2676 states. [2021-12-16 02:02:21,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2676 to 2523. [2021-12-16 02:02:21,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2523 states, 2488 states have (on average 1.8243569131832797) internal successors, (4539), 2490 states have internal predecessors, (4539), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-16 02:02:21,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2523 states to 2523 states and 4593 transitions. [2021-12-16 02:02:21,920 INFO L78 Accepts]: Start accepts. Automaton has 2523 states and 4593 transitions. Word has length 189 [2021-12-16 02:02:21,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:02:21,920 INFO L470 AbstractCegarLoop]: Abstraction has 2523 states and 4593 transitions. [2021-12-16 02:02:21,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:21,921 INFO L276 IsEmpty]: Start isEmpty. Operand 2523 states and 4593 transitions. [2021-12-16 02:02:21,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-16 02:02:21,924 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:02:21,924 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:02:21,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 02:02:21,925 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:02:21,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:02:21,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1444519429, now seen corresponding path program 1 times [2021-12-16 02:02:21,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:02:21,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041896723] [2021-12-16 02:02:21,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:02:21,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:02:21,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:22,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:02:22,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:22,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:02:22,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:22,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:02:22,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:22,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:02:22,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:22,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:02:22,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:22,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:02:22,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:02:22,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041896723] [2021-12-16 02:02:22,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041896723] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:02:22,243 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:02:22,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 02:02:22,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707129083] [2021-12-16 02:02:22,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:02:22,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 02:02:22,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:02:22,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 02:02:22,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 02:02:22,247 INFO L87 Difference]: Start difference. First operand 2523 states and 4593 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:23,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:02:23,637 INFO L93 Difference]: Finished difference Result 3061 states and 5463 transitions. [2021-12-16 02:02:23,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 02:02:23,638 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-16 02:02:23,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:02:23,652 INFO L225 Difference]: With dead ends: 3061 [2021-12-16 02:02:23,652 INFO L226 Difference]: Without dead ends: 2676 [2021-12-16 02:02:23,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:02:23,657 INFO L933 BasicCegarLoop]: 4659 mSDtfsCounter, 1093 mSDsluCounter, 12309 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1118 SdHoareTripleChecker+Valid, 16968 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-16 02:02:23,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1118 Valid, 16968 Invalid, 816 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-16 02:02:23,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2676 states. [2021-12-16 02:02:23,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2676 to 2523. [2021-12-16 02:02:23,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2523 states, 2488 states have (on average 1.8239549839228295) internal successors, (4538), 2490 states have internal predecessors, (4538), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-16 02:02:23,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2523 states to 2523 states and 4592 transitions. [2021-12-16 02:02:23,854 INFO L78 Accepts]: Start accepts. Automaton has 2523 states and 4592 transitions. Word has length 189 [2021-12-16 02:02:23,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:02:23,855 INFO L470 AbstractCegarLoop]: Abstraction has 2523 states and 4592 transitions. [2021-12-16 02:02:23,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:23,856 INFO L276 IsEmpty]: Start isEmpty. Operand 2523 states and 4592 transitions. [2021-12-16 02:02:23,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-16 02:02:23,859 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:02:23,859 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:02:23,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 02:02:23,860 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:02:23,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:02:23,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1347349561, now seen corresponding path program 1 times [2021-12-16 02:02:23,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:02:23,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890315092] [2021-12-16 02:02:23,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:02:23,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:02:23,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:23,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:02:23,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:23,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:02:23,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:24,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:02:24,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:24,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:02:24,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:24,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:02:24,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:24,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:02:24,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:02:24,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890315092] [2021-12-16 02:02:24,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890315092] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:02:24,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:02:24,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 02:02:24,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83759574] [2021-12-16 02:02:24,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:02:24,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 02:02:24,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:02:24,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 02:02:24,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 02:02:24,086 INFO L87 Difference]: Start difference. First operand 2523 states and 4592 transitions. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:26,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:02:26,027 INFO L93 Difference]: Finished difference Result 3056 states and 5455 transitions. [2021-12-16 02:02:26,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 02:02:26,028 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-16 02:02:26,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:02:26,042 INFO L225 Difference]: With dead ends: 3056 [2021-12-16 02:02:26,043 INFO L226 Difference]: Without dead ends: 2675 [2021-12-16 02:02:26,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-16 02:02:26,054 INFO L933 BasicCegarLoop]: 4613 mSDtfsCounter, 5042 mSDsluCounter, 12581 mSDsCounter, 0 mSdLazyCounter, 1416 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5063 SdHoareTripleChecker+Valid, 17194 SdHoareTripleChecker+Invalid, 1484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-16 02:02:26,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5063 Valid, 17194 Invalid, 1484 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [68 Valid, 1416 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-16 02:02:26,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2675 states. [2021-12-16 02:02:26,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2675 to 2523. [2021-12-16 02:02:26,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2523 states, 2488 states have (on average 1.8235530546623795) internal successors, (4537), 2490 states have internal predecessors, (4537), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-16 02:02:26,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2523 states to 2523 states and 4591 transitions. [2021-12-16 02:02:26,144 INFO L78 Accepts]: Start accepts. Automaton has 2523 states and 4591 transitions. Word has length 189 [2021-12-16 02:02:26,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:02:26,144 INFO L470 AbstractCegarLoop]: Abstraction has 2523 states and 4591 transitions. [2021-12-16 02:02:26,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:26,145 INFO L276 IsEmpty]: Start isEmpty. Operand 2523 states and 4591 transitions. [2021-12-16 02:02:26,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-16 02:02:26,148 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:02:26,148 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:02:26,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 02:02:26,149 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:02:26,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:02:26,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1024367305, now seen corresponding path program 1 times [2021-12-16 02:02:26,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:02:26,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512082948] [2021-12-16 02:02:26,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:02:26,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:02:26,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:26,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:02:26,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:26,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:02:26,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:26,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:02:26,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:26,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:02:26,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:26,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:02:26,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:26,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:02:26,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:02:26,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512082948] [2021-12-16 02:02:26,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512082948] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:02:26,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:02:26,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:02:26,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317799070] [2021-12-16 02:02:26,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:02:26,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:02:26,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:02:26,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:02:26,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:02:26,320 INFO L87 Difference]: Start difference. First operand 2523 states and 4591 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:27,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:02:27,865 INFO L93 Difference]: Finished difference Result 3055 states and 5453 transitions. [2021-12-16 02:02:27,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 02:02:27,866 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-16 02:02:27,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:02:27,875 INFO L225 Difference]: With dead ends: 3055 [2021-12-16 02:02:27,875 INFO L226 Difference]: Without dead ends: 2674 [2021-12-16 02:02:27,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-16 02:02:27,878 INFO L933 BasicCegarLoop]: 4603 mSDtfsCounter, 5324 mSDsluCounter, 12660 mSDsCounter, 0 mSdLazyCounter, 1323 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5345 SdHoareTripleChecker+Valid, 17263 SdHoareTripleChecker+Invalid, 1424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-16 02:02:27,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5345 Valid, 17263 Invalid, 1424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1323 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-16 02:02:27,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2021-12-16 02:02:27,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2523. [2021-12-16 02:02:27,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2523 states, 2488 states have (on average 1.822347266881029) internal successors, (4534), 2490 states have internal predecessors, (4534), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-16 02:02:27,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2523 states to 2523 states and 4588 transitions. [2021-12-16 02:02:27,924 INFO L78 Accepts]: Start accepts. Automaton has 2523 states and 4588 transitions. Word has length 189 [2021-12-16 02:02:27,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:02:27,925 INFO L470 AbstractCegarLoop]: Abstraction has 2523 states and 4588 transitions. [2021-12-16 02:02:27,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:27,925 INFO L276 IsEmpty]: Start isEmpty. Operand 2523 states and 4588 transitions. [2021-12-16 02:02:27,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-16 02:02:27,927 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:02:27,927 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:02:27,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 02:02:27,927 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:02:27,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:02:27,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1228031685, now seen corresponding path program 1 times [2021-12-16 02:02:27,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:02:27,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711887143] [2021-12-16 02:02:27,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:02:27,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:02:27,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:27,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:02:27,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:28,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:02:28,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:28,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:02:28,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:28,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:02:28,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:28,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:02:28,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:28,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:02:28,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:02:28,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711887143] [2021-12-16 02:02:28,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711887143] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:02:28,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:02:28,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:02:28,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676922393] [2021-12-16 02:02:28,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:02:28,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:02:28,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:02:28,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:02:28,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:02:28,101 INFO L87 Difference]: Start difference. First operand 2523 states and 4588 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:30,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:02:30,307 INFO L93 Difference]: Finished difference Result 3081 states and 5495 transitions. [2021-12-16 02:02:30,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:02:30,324 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-16 02:02:30,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:02:30,335 INFO L225 Difference]: With dead ends: 3081 [2021-12-16 02:02:30,336 INFO L226 Difference]: Without dead ends: 2700 [2021-12-16 02:02:30,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:02:30,339 INFO L933 BasicCegarLoop]: 4650 mSDtfsCounter, 5141 mSDsluCounter, 16823 mSDsCounter, 0 mSdLazyCounter, 1609 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5162 SdHoareTripleChecker+Valid, 21473 SdHoareTripleChecker+Invalid, 1685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-16 02:02:30,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5162 Valid, 21473 Invalid, 1685 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 1609 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-16 02:02:30,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2700 states. [2021-12-16 02:02:30,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2700 to 2523. [2021-12-16 02:02:30,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2523 states, 2488 states have (on average 1.8219453376205788) internal successors, (4533), 2490 states have internal predecessors, (4533), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-16 02:02:30,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2523 states to 2523 states and 4587 transitions. [2021-12-16 02:02:30,417 INFO L78 Accepts]: Start accepts. Automaton has 2523 states and 4587 transitions. Word has length 189 [2021-12-16 02:02:30,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:02:30,418 INFO L470 AbstractCegarLoop]: Abstraction has 2523 states and 4587 transitions. [2021-12-16 02:02:30,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:30,418 INFO L276 IsEmpty]: Start isEmpty. Operand 2523 states and 4587 transitions. [2021-12-16 02:02:30,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-16 02:02:30,420 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:02:30,420 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:02:30,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 02:02:30,421 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:02:30,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:02:30,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1798303491, now seen corresponding path program 1 times [2021-12-16 02:02:30,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:02:30,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263300900] [2021-12-16 02:02:30,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:02:30,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:02:30,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:30,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:02:30,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:30,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:02:30,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:30,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:02:30,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:30,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:02:30,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:30,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:02:30,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:30,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:02:30,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:02:30,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263300900] [2021-12-16 02:02:30,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263300900] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:02:30,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:02:30,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:02:30,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332759484] [2021-12-16 02:02:30,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:02:30,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:02:30,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:02:30,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:02:30,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:02:30,585 INFO L87 Difference]: Start difference. First operand 2523 states and 4587 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:32,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:02:32,158 INFO L93 Difference]: Finished difference Result 3080 states and 5490 transitions. [2021-12-16 02:02:32,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:02:32,158 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-16 02:02:32,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:02:32,167 INFO L225 Difference]: With dead ends: 3080 [2021-12-16 02:02:32,167 INFO L226 Difference]: Without dead ends: 2699 [2021-12-16 02:02:32,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:02:32,170 INFO L933 BasicCegarLoop]: 4646 mSDtfsCounter, 5316 mSDsluCounter, 12659 mSDsCounter, 0 mSdLazyCounter, 1414 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5337 SdHoareTripleChecker+Valid, 17305 SdHoareTripleChecker+Invalid, 1517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-16 02:02:32,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5337 Valid, 17305 Invalid, 1517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1414 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-16 02:02:32,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2699 states. [2021-12-16 02:02:32,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2699 to 2523. [2021-12-16 02:02:32,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2523 states, 2488 states have (on average 1.8215434083601285) internal successors, (4532), 2490 states have internal predecessors, (4532), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-16 02:02:32,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2523 states to 2523 states and 4586 transitions. [2021-12-16 02:02:32,223 INFO L78 Accepts]: Start accepts. Automaton has 2523 states and 4586 transitions. Word has length 189 [2021-12-16 02:02:32,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:02:32,223 INFO L470 AbstractCegarLoop]: Abstraction has 2523 states and 4586 transitions. [2021-12-16 02:02:32,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:32,223 INFO L276 IsEmpty]: Start isEmpty. Operand 2523 states and 4586 transitions. [2021-12-16 02:02:32,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-16 02:02:32,225 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:02:32,225 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:02:32,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 02:02:32,226 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:02:32,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:02:32,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1092794619, now seen corresponding path program 1 times [2021-12-16 02:02:32,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:02:32,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356052302] [2021-12-16 02:02:32,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:02:32,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:02:32,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:32,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:02:32,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:32,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:02:32,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:32,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:02:32,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:32,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:02:32,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:32,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:02:32,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:32,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:02:32,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:02:32,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356052302] [2021-12-16 02:02:32,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356052302] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:02:32,396 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:02:32,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 02:02:32,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384506009] [2021-12-16 02:02:32,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:02:32,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 02:02:32,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:02:32,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 02:02:32,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:02:32,398 INFO L87 Difference]: Start difference. First operand 2523 states and 4586 transitions. Second operand has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:35,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:02:35,506 INFO L93 Difference]: Finished difference Result 3633 states and 6375 transitions. [2021-12-16 02:02:35,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 02:02:35,507 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-16 02:02:35,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:02:35,522 INFO L225 Difference]: With dead ends: 3633 [2021-12-16 02:02:35,522 INFO L226 Difference]: Without dead ends: 3252 [2021-12-16 02:02:35,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-12-16 02:02:35,527 INFO L933 BasicCegarLoop]: 5014 mSDtfsCounter, 6125 mSDsluCounter, 18225 mSDsCounter, 0 mSdLazyCounter, 3005 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6146 SdHoareTripleChecker+Valid, 23239 SdHoareTripleChecker+Invalid, 3122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 3005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-16 02:02:35,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6146 Valid, 23239 Invalid, 3122 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [117 Valid, 3005 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-16 02:02:35,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3252 states. [2021-12-16 02:02:35,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3252 to 2924. [2021-12-16 02:02:35,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2924 states, 2859 states have (on average 1.7901364113326337) internal successors, (5118), 2862 states have internal predecessors, (5118), 50 states have call successors, (50), 12 states have call predecessors, (50), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-16 02:02:35,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 5221 transitions. [2021-12-16 02:02:35,626 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 5221 transitions. Word has length 189 [2021-12-16 02:02:35,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:02:35,626 INFO L470 AbstractCegarLoop]: Abstraction has 2924 states and 5221 transitions. [2021-12-16 02:02:35,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:35,627 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 5221 transitions. [2021-12-16 02:02:35,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-16 02:02:35,629 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:02:35,630 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:02:35,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 02:02:35,630 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:02:35,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:02:35,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1878792509, now seen corresponding path program 1 times [2021-12-16 02:02:35,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:02:35,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750922101] [2021-12-16 02:02:35,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:02:35,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:02:35,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:35,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:02:35,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:35,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:02:35,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:35,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:02:35,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:35,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:02:35,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:35,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:02:35,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:35,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:02:35,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:02:35,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750922101] [2021-12-16 02:02:35,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750922101] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:02:35,845 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:02:35,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:02:35,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035061501] [2021-12-16 02:02:35,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:02:35,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:02:35,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:02:35,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:02:35,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:02:35,847 INFO L87 Difference]: Start difference. First operand 2924 states and 5221 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:37,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:02:37,163 INFO L93 Difference]: Finished difference Result 4077 states and 7097 transitions. [2021-12-16 02:02:37,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:02:37,163 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-16 02:02:37,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:02:37,191 INFO L225 Difference]: With dead ends: 4077 [2021-12-16 02:02:37,191 INFO L226 Difference]: Without dead ends: 3295 [2021-12-16 02:02:37,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:02:37,199 INFO L933 BasicCegarLoop]: 4593 mSDtfsCounter, 5401 mSDsluCounter, 12657 mSDsCounter, 0 mSdLazyCounter, 1350 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5422 SdHoareTripleChecker+Valid, 17250 SdHoareTripleChecker+Invalid, 1458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:02:37,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5422 Valid, 17250 Invalid, 1458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1350 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-16 02:02:37,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3295 states. [2021-12-16 02:02:37,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3295 to 2924. [2021-12-16 02:02:37,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2924 states, 2859 states have (on average 1.7894368660370759) internal successors, (5116), 2862 states have internal predecessors, (5116), 50 states have call successors, (50), 12 states have call predecessors, (50), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-16 02:02:37,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 5219 transitions. [2021-12-16 02:02:37,291 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 5219 transitions. Word has length 189 [2021-12-16 02:02:37,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:02:37,292 INFO L470 AbstractCegarLoop]: Abstraction has 2924 states and 5219 transitions. [2021-12-16 02:02:37,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:37,292 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 5219 transitions. [2021-12-16 02:02:37,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-16 02:02:37,295 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:02:37,295 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:02:37,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 02:02:37,296 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:02:37,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:02:37,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1211410619, now seen corresponding path program 1 times [2021-12-16 02:02:37,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:02:37,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252082233] [2021-12-16 02:02:37,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:02:37,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:02:37,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:37,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:02:37,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:37,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:02:37,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:37,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:02:37,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:37,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:02:37,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:37,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:02:37,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:37,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:02:37,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:02:37,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252082233] [2021-12-16 02:02:37,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252082233] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:02:37,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:02:37,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:02:37,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619472012] [2021-12-16 02:02:37,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:02:37,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:02:37,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:02:37,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:02:37,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:02:37,489 INFO L87 Difference]: Start difference. First operand 2924 states and 5219 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:38,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:02:38,950 INFO L93 Difference]: Finished difference Result 4074 states and 7085 transitions. [2021-12-16 02:02:38,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:02:38,951 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-16 02:02:38,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:02:38,965 INFO L225 Difference]: With dead ends: 4074 [2021-12-16 02:02:38,965 INFO L226 Difference]: Without dead ends: 3292 [2021-12-16 02:02:38,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:02:38,971 INFO L933 BasicCegarLoop]: 4634 mSDtfsCounter, 5313 mSDsluCounter, 12659 mSDsCounter, 0 mSdLazyCounter, 1387 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5334 SdHoareTripleChecker+Valid, 17293 SdHoareTripleChecker+Invalid, 1493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-16 02:02:38,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5334 Valid, 17293 Invalid, 1493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1387 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-16 02:02:38,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3292 states. [2021-12-16 02:02:39,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3292 to 2924. [2021-12-16 02:02:39,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2924 states, 2859 states have (on average 1.788737320741518) internal successors, (5114), 2862 states have internal predecessors, (5114), 50 states have call successors, (50), 12 states have call predecessors, (50), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-16 02:02:39,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 5217 transitions. [2021-12-16 02:02:39,043 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 5217 transitions. Word has length 189 [2021-12-16 02:02:39,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:02:39,044 INFO L470 AbstractCegarLoop]: Abstraction has 2924 states and 5217 transitions. [2021-12-16 02:02:39,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:39,044 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 5217 transitions. [2021-12-16 02:02:39,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-16 02:02:39,046 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:02:39,046 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:02:39,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-16 02:02:39,046 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:02:39,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:02:39,048 INFO L85 PathProgramCache]: Analyzing trace with hash 888327811, now seen corresponding path program 1 times [2021-12-16 02:02:39,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:02:39,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956897212] [2021-12-16 02:02:39,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:02:39,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:02:39,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:39,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:02:39,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:39,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:02:39,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:39,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:02:39,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:39,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:02:39,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:39,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:02:39,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:39,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:02:39,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:02:39,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956897212] [2021-12-16 02:02:39,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956897212] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:02:39,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:02:39,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:02:39,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271696691] [2021-12-16 02:02:39,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:02:39,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:02:39,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:02:39,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:02:39,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:02:39,309 INFO L87 Difference]: Start difference. First operand 2924 states and 5217 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:41,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:02:41,167 INFO L93 Difference]: Finished difference Result 4071 states and 7073 transitions. [2021-12-16 02:02:41,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:02:41,168 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-16 02:02:41,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:02:41,177 INFO L225 Difference]: With dead ends: 4071 [2021-12-16 02:02:41,177 INFO L226 Difference]: Without dead ends: 3289 [2021-12-16 02:02:41,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:02:41,183 INFO L933 BasicCegarLoop]: 4630 mSDtfsCounter, 5134 mSDsluCounter, 16823 mSDsCounter, 0 mSdLazyCounter, 1552 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5155 SdHoareTripleChecker+Valid, 21453 SdHoareTripleChecker+Invalid, 1631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-16 02:02:41,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5155 Valid, 21453 Invalid, 1631 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [79 Valid, 1552 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-16 02:02:41,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3289 states. [2021-12-16 02:02:41,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3289 to 2924. [2021-12-16 02:02:41,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2924 states, 2859 states have (on average 1.7880377754459602) internal successors, (5112), 2862 states have internal predecessors, (5112), 50 states have call successors, (50), 12 states have call predecessors, (50), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-16 02:02:41,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 5215 transitions. [2021-12-16 02:02:41,301 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 5215 transitions. Word has length 189 [2021-12-16 02:02:41,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:02:41,301 INFO L470 AbstractCegarLoop]: Abstraction has 2924 states and 5215 transitions. [2021-12-16 02:02:41,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:41,302 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 5215 transitions. [2021-12-16 02:02:41,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-16 02:02:41,304 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:02:41,304 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:02:41,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-16 02:02:41,305 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:02:41,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:02:41,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1233155973, now seen corresponding path program 1 times [2021-12-16 02:02:41,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:02:41,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40962859] [2021-12-16 02:02:41,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:02:41,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:02:41,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:41,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:02:41,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:41,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:02:41,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:41,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:02:41,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:41,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:02:41,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:41,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:02:41,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:41,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:02:41,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:02:41,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40962859] [2021-12-16 02:02:41,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40962859] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:02:41,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:02:41,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:02:41,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122257179] [2021-12-16 02:02:41,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:02:41,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:02:41,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:02:41,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:02:41,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:02:41,494 INFO L87 Difference]: Start difference. First operand 2924 states and 5215 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:42,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:02:42,979 INFO L93 Difference]: Finished difference Result 4068 states and 7061 transitions. [2021-12-16 02:02:42,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:02:42,980 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-16 02:02:42,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:02:42,991 INFO L225 Difference]: With dead ends: 4068 [2021-12-16 02:02:42,991 INFO L226 Difference]: Without dead ends: 3286 [2021-12-16 02:02:42,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:02:42,996 INFO L933 BasicCegarLoop]: 4624 mSDtfsCounter, 5312 mSDsluCounter, 12659 mSDsCounter, 0 mSdLazyCounter, 1364 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5333 SdHoareTripleChecker+Valid, 17283 SdHoareTripleChecker+Invalid, 1473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-16 02:02:42,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5333 Valid, 17283 Invalid, 1473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1364 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-16 02:02:42,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3286 states. [2021-12-16 02:02:43,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3286 to 2924. [2021-12-16 02:02:43,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2924 states, 2859 states have (on average 1.7873382301504022) internal successors, (5110), 2862 states have internal predecessors, (5110), 50 states have call successors, (50), 12 states have call predecessors, (50), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-16 02:02:43,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 5213 transitions. [2021-12-16 02:02:43,067 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 5213 transitions. Word has length 189 [2021-12-16 02:02:43,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:02:43,068 INFO L470 AbstractCegarLoop]: Abstraction has 2924 states and 5213 transitions. [2021-12-16 02:02:43,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:43,069 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 5213 transitions. [2021-12-16 02:02:43,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-16 02:02:43,070 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:02:43,070 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:02:43,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-16 02:02:43,071 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:02:43,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:02:43,071 INFO L85 PathProgramCache]: Analyzing trace with hash -2080856509, now seen corresponding path program 1 times [2021-12-16 02:02:43,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:02:43,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086383133] [2021-12-16 02:02:43,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:02:43,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:02:43,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:43,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:02:43,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:43,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:02:43,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:43,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:02:43,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:43,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:02:43,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:43,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:02:43,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:43,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:02:43,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:02:43,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086383133] [2021-12-16 02:02:43,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086383133] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:02:43,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:02:43,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:02:43,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468078249] [2021-12-16 02:02:43,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:02:43,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:02:43,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:02:43,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:02:43,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:02:43,249 INFO L87 Difference]: Start difference. First operand 2924 states and 5213 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:45,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:02:45,231 INFO L93 Difference]: Finished difference Result 4062 states and 7043 transitions. [2021-12-16 02:02:45,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:02:45,231 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-16 02:02:45,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:02:45,251 INFO L225 Difference]: With dead ends: 4062 [2021-12-16 02:02:45,262 INFO L226 Difference]: Without dead ends: 3280 [2021-12-16 02:02:45,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:02:45,267 INFO L933 BasicCegarLoop]: 4618 mSDtfsCounter, 5131 mSDsluCounter, 16823 mSDsCounter, 0 mSdLazyCounter, 1519 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5152 SdHoareTripleChecker+Valid, 21441 SdHoareTripleChecker+Invalid, 1601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-16 02:02:45,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5152 Valid, 21441 Invalid, 1601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1519 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-16 02:02:45,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3280 states. [2021-12-16 02:02:45,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3280 to 2924. [2021-12-16 02:02:45,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2924 states, 2859 states have (on average 1.7866386848548443) internal successors, (5108), 2862 states have internal predecessors, (5108), 50 states have call successors, (50), 12 states have call predecessors, (50), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-16 02:02:45,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 5211 transitions. [2021-12-16 02:02:45,379 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 5211 transitions. Word has length 189 [2021-12-16 02:02:45,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:02:45,379 INFO L470 AbstractCegarLoop]: Abstraction has 2924 states and 5211 transitions. [2021-12-16 02:02:45,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:45,380 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 5211 transitions. [2021-12-16 02:02:45,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-16 02:02:45,381 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:02:45,381 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:02:45,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-16 02:02:45,381 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:02:45,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:02:45,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1602841729, now seen corresponding path program 1 times [2021-12-16 02:02:45,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:02:45,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575102644] [2021-12-16 02:02:45,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:02:45,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:02:45,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:45,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:02:45,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:45,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:02:45,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:45,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:02:45,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:45,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:02:45,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:45,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:02:45,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:45,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:02:45,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:02:45,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575102644] [2021-12-16 02:02:45,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575102644] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:02:45,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:02:45,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:02:45,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463495312] [2021-12-16 02:02:45,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:02:45,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:02:45,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:02:45,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:02:45,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:02:45,559 INFO L87 Difference]: Start difference. First operand 2924 states and 5211 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:47,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:02:47,118 INFO L93 Difference]: Finished difference Result 4059 states and 7031 transitions. [2021-12-16 02:02:47,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:02:47,118 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-16 02:02:47,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:02:47,136 INFO L225 Difference]: With dead ends: 4059 [2021-12-16 02:02:47,137 INFO L226 Difference]: Without dead ends: 3277 [2021-12-16 02:02:47,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:02:47,140 INFO L933 BasicCegarLoop]: 4614 mSDtfsCounter, 5129 mSDsluCounter, 16823 mSDsCounter, 0 mSdLazyCounter, 1507 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5150 SdHoareTripleChecker+Valid, 21437 SdHoareTripleChecker+Invalid, 1589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-16 02:02:47,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5150 Valid, 21437 Invalid, 1589 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [82 Valid, 1507 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-16 02:02:47,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3277 states. [2021-12-16 02:02:47,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3277 to 2924. [2021-12-16 02:02:47,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2924 states, 2859 states have (on average 1.7859391395592865) internal successors, (5106), 2862 states have internal predecessors, (5106), 50 states have call successors, (50), 12 states have call predecessors, (50), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-16 02:02:47,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 5209 transitions. [2021-12-16 02:02:47,212 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 5209 transitions. Word has length 189 [2021-12-16 02:02:47,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:02:47,212 INFO L470 AbstractCegarLoop]: Abstraction has 2924 states and 5209 transitions. [2021-12-16 02:02:47,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:47,213 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 5209 transitions. [2021-12-16 02:02:47,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-16 02:02:47,214 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:02:47,214 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:02:47,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-16 02:02:47,215 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:02:47,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:02:47,215 INFO L85 PathProgramCache]: Analyzing trace with hash 197650051, now seen corresponding path program 1 times [2021-12-16 02:02:47,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:02:47,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857867334] [2021-12-16 02:02:47,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:02:47,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:02:47,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:47,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:02:47,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:47,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:02:47,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:47,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:02:47,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:47,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:02:47,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:47,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:02:47,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:47,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:02:47,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:02:47,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857867334] [2021-12-16 02:02:47,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857867334] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:02:47,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:02:47,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:02:47,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479464648] [2021-12-16 02:02:47,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:02:47,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:02:47,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:02:47,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:02:47,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:02:47,384 INFO L87 Difference]: Start difference. First operand 2924 states and 5209 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:48,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:02:48,707 INFO L93 Difference]: Finished difference Result 4056 states and 7019 transitions. [2021-12-16 02:02:48,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:02:48,708 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-16 02:02:48,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:02:48,727 INFO L225 Difference]: With dead ends: 4056 [2021-12-16 02:02:48,728 INFO L226 Difference]: Without dead ends: 3274 [2021-12-16 02:02:48,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:02:48,733 INFO L933 BasicCegarLoop]: 4610 mSDtfsCounter, 5304 mSDsluCounter, 12659 mSDsCounter, 0 mSdLazyCounter, 1330 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5325 SdHoareTripleChecker+Valid, 17269 SdHoareTripleChecker+Invalid, 1439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:02:48,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5325 Valid, 17269 Invalid, 1439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1330 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-16 02:02:48,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3274 states. [2021-12-16 02:02:48,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3274 to 2924. [2021-12-16 02:02:48,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2924 states, 2859 states have (on average 1.7852395942637285) internal successors, (5104), 2862 states have internal predecessors, (5104), 50 states have call successors, (50), 12 states have call predecessors, (50), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-16 02:02:48,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 5207 transitions. [2021-12-16 02:02:48,819 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 5207 transitions. Word has length 189 [2021-12-16 02:02:48,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:02:48,819 INFO L470 AbstractCegarLoop]: Abstraction has 2924 states and 5207 transitions. [2021-12-16 02:02:48,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:48,819 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 5207 transitions. [2021-12-16 02:02:48,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-16 02:02:48,821 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:02:48,821 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:02:48,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-16 02:02:48,822 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:02:48,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:02:48,822 INFO L85 PathProgramCache]: Analyzing trace with hash 2091983937, now seen corresponding path program 1 times [2021-12-16 02:02:48,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:02:48,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135935080] [2021-12-16 02:02:48,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:02:48,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:02:48,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:48,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:02:48,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:48,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:02:48,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:48,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:02:48,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:48,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:02:48,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:48,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:02:48,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:48,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:02:48,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:02:48,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135935080] [2021-12-16 02:02:48,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135935080] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:02:48,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:02:48,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:02:48,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629417980] [2021-12-16 02:02:48,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:02:48,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:02:48,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:02:48,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:02:48,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:02:48,958 INFO L87 Difference]: Start difference. First operand 2924 states and 5207 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:50,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:02:50,323 INFO L93 Difference]: Finished difference Result 4053 states and 7007 transitions. [2021-12-16 02:02:50,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:02:50,324 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-16 02:02:50,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:02:50,330 INFO L225 Difference]: With dead ends: 4053 [2021-12-16 02:02:50,331 INFO L226 Difference]: Without dead ends: 3271 [2021-12-16 02:02:50,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:02:50,334 INFO L933 BasicCegarLoop]: 4577 mSDtfsCounter, 5354 mSDsluCounter, 12655 mSDsCounter, 0 mSdLazyCounter, 1291 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5375 SdHoareTripleChecker+Valid, 17232 SdHoareTripleChecker+Invalid, 1404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:02:50,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5375 Valid, 17232 Invalid, 1404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1291 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-16 02:02:50,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3271 states. [2021-12-16 02:02:50,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3271 to 2924. [2021-12-16 02:02:50,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2924 states, 2859 states have (on average 1.7845400489681706) internal successors, (5102), 2862 states have internal predecessors, (5102), 50 states have call successors, (50), 12 states have call predecessors, (50), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-16 02:02:50,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 5205 transitions. [2021-12-16 02:02:50,423 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 5205 transitions. Word has length 189 [2021-12-16 02:02:50,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:02:50,423 INFO L470 AbstractCegarLoop]: Abstraction has 2924 states and 5205 transitions. [2021-12-16 02:02:50,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:50,424 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 5205 transitions. [2021-12-16 02:02:50,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-16 02:02:50,430 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:02:50,430 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:02:50,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-16 02:02:50,430 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:02:50,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:02:50,431 INFO L85 PathProgramCache]: Analyzing trace with hash -756402493, now seen corresponding path program 1 times [2021-12-16 02:02:50,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:02:50,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834523438] [2021-12-16 02:02:50,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:02:50,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:02:50,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:50,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:02:50,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:50,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:02:50,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:50,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:02:50,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:50,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:02:50,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:50,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:02:50,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:50,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:02:50,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:02:50,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834523438] [2021-12-16 02:02:50,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834523438] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:02:50,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:02:50,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:02:50,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356460315] [2021-12-16 02:02:50,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:02:50,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:02:50,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:02:50,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:02:50,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:02:50,589 INFO L87 Difference]: Start difference. First operand 2924 states and 5205 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:51,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:02:51,808 INFO L93 Difference]: Finished difference Result 4050 states and 6995 transitions. [2021-12-16 02:02:51,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:02:51,809 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-16 02:02:51,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:02:51,814 INFO L225 Difference]: With dead ends: 4050 [2021-12-16 02:02:51,814 INFO L226 Difference]: Without dead ends: 3268 [2021-12-16 02:02:51,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:02:51,817 INFO L933 BasicCegarLoop]: 4602 mSDtfsCounter, 5298 mSDsluCounter, 12657 mSDsCounter, 0 mSdLazyCounter, 1312 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5319 SdHoareTripleChecker+Valid, 17259 SdHoareTripleChecker+Invalid, 1423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-16 02:02:51,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5319 Valid, 17259 Invalid, 1423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1312 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-16 02:02:51,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3268 states. [2021-12-16 02:02:51,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3268 to 2924. [2021-12-16 02:02:51,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2924 states, 2859 states have (on average 1.7838405036726128) internal successors, (5100), 2862 states have internal predecessors, (5100), 50 states have call successors, (50), 12 states have call predecessors, (50), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-16 02:02:51,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 5203 transitions. [2021-12-16 02:02:51,925 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 5203 transitions. Word has length 189 [2021-12-16 02:02:51,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:02:51,925 INFO L470 AbstractCegarLoop]: Abstraction has 2924 states and 5203 transitions. [2021-12-16 02:02:51,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:51,926 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 5203 transitions. [2021-12-16 02:02:51,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-16 02:02:51,927 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:02:51,927 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:02:51,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-16 02:02:51,927 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:02:51,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:02:51,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1679569919, now seen corresponding path program 1 times [2021-12-16 02:02:51,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:02:51,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718104645] [2021-12-16 02:02:51,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:02:51,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:02:51,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:51,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:02:51,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:51,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:02:51,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:52,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:02:52,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:52,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:02:52,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:52,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:02:52,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:52,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:02:52,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:02:52,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718104645] [2021-12-16 02:02:52,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718104645] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:02:52,037 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:02:52,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:02:52,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240222806] [2021-12-16 02:02:52,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:02:52,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:02:52,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:02:52,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:02:52,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:02:52,039 INFO L87 Difference]: Start difference. First operand 2924 states and 5203 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:53,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:02:53,230 INFO L93 Difference]: Finished difference Result 4047 states and 6983 transitions. [2021-12-16 02:02:53,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:02:53,231 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-16 02:02:53,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:02:53,251 INFO L225 Difference]: With dead ends: 4047 [2021-12-16 02:02:53,260 INFO L226 Difference]: Without dead ends: 3265 [2021-12-16 02:02:53,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:02:53,264 INFO L933 BasicCegarLoop]: 4598 mSDtfsCounter, 5296 mSDsluCounter, 12657 mSDsCounter, 0 mSdLazyCounter, 1302 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5317 SdHoareTripleChecker+Valid, 17255 SdHoareTripleChecker+Invalid, 1413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-16 02:02:53,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5317 Valid, 17255 Invalid, 1413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1302 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-16 02:02:53,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3265 states. [2021-12-16 02:02:53,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3265 to 2924. [2021-12-16 02:02:53,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2924 states, 2859 states have (on average 1.783140958377055) internal successors, (5098), 2862 states have internal predecessors, (5098), 50 states have call successors, (50), 12 states have call predecessors, (50), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-16 02:02:53,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 5201 transitions. [2021-12-16 02:02:53,439 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 5201 transitions. Word has length 189 [2021-12-16 02:02:53,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:02:53,440 INFO L470 AbstractCegarLoop]: Abstraction has 2924 states and 5201 transitions. [2021-12-16 02:02:53,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:53,440 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 5201 transitions. [2021-12-16 02:02:53,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-16 02:02:53,441 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:02:53,442 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:02:53,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-16 02:02:53,442 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:02:53,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:02:53,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1293707517, now seen corresponding path program 1 times [2021-12-16 02:02:53,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:02:53,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857898318] [2021-12-16 02:02:53,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:02:53,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:02:53,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:53,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:02:53,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:53,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:02:53,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:53,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:02:53,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:53,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:02:53,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:53,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:02:53,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:53,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:02:53,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:02:53,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857898318] [2021-12-16 02:02:53,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857898318] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:02:53,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:02:53,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:02:53,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751610848] [2021-12-16 02:02:53,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:02:53,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:02:53,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:02:53,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:02:53,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:02:53,575 INFO L87 Difference]: Start difference. First operand 2924 states and 5201 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:54,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:02:54,812 INFO L93 Difference]: Finished difference Result 4044 states and 6971 transitions. [2021-12-16 02:02:54,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:02:54,812 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-16 02:02:54,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:02:54,817 INFO L225 Difference]: With dead ends: 4044 [2021-12-16 02:02:54,817 INFO L226 Difference]: Without dead ends: 3262 [2021-12-16 02:02:54,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:02:54,819 INFO L933 BasicCegarLoop]: 4592 mSDtfsCounter, 5297 mSDsluCounter, 12657 mSDsCounter, 0 mSdLazyCounter, 1289 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5318 SdHoareTripleChecker+Valid, 17249 SdHoareTripleChecker+Invalid, 1403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:02:54,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5318 Valid, 17249 Invalid, 1403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1289 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-16 02:02:54,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3262 states. [2021-12-16 02:02:54,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3262 to 2924. [2021-12-16 02:02:54,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2924 states, 2859 states have (on average 1.782441413081497) internal successors, (5096), 2862 states have internal predecessors, (5096), 50 states have call successors, (50), 12 states have call predecessors, (50), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-16 02:02:54,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 5199 transitions. [2021-12-16 02:02:54,962 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 5199 transitions. Word has length 189 [2021-12-16 02:02:54,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:02:54,962 INFO L470 AbstractCegarLoop]: Abstraction has 2924 states and 5199 transitions. [2021-12-16 02:02:54,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:54,963 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 5199 transitions. [2021-12-16 02:02:54,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-16 02:02:54,964 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:02:54,964 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:02:54,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-16 02:02:54,964 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:02:54,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:02:54,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1558355007, now seen corresponding path program 1 times [2021-12-16 02:02:54,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:02:54,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228543735] [2021-12-16 02:02:54,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:02:54,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:02:54,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:54,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:02:54,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:55,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:02:55,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:55,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:02:55,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:55,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:02:55,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:55,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:02:55,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:55,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:02:55,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:02:55,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228543735] [2021-12-16 02:02:55,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228543735] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:02:55,078 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:02:55,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:02:55,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036384417] [2021-12-16 02:02:55,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:02:55,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:02:55,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:02:55,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:02:55,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:02:55,080 INFO L87 Difference]: Start difference. First operand 2924 states and 5199 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:56,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:02:56,479 INFO L93 Difference]: Finished difference Result 4038 states and 6953 transitions. [2021-12-16 02:02:56,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:02:56,480 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-16 02:02:56,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:02:56,488 INFO L225 Difference]: With dead ends: 4038 [2021-12-16 02:02:56,489 INFO L226 Difference]: Without dead ends: 3256 [2021-12-16 02:02:56,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:02:56,493 INFO L933 BasicCegarLoop]: 4586 mSDtfsCounter, 5293 mSDsluCounter, 12657 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5314 SdHoareTripleChecker+Valid, 17243 SdHoareTripleChecker+Invalid, 1389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-16 02:02:56,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5314 Valid, 17243 Invalid, 1389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1275 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-16 02:02:56,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3256 states. [2021-12-16 02:02:56,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3256 to 2924. [2021-12-16 02:02:56,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2924 states, 2859 states have (on average 1.7817418677859391) internal successors, (5094), 2862 states have internal predecessors, (5094), 50 states have call successors, (50), 12 states have call predecessors, (50), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-16 02:02:56,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 5197 transitions. [2021-12-16 02:02:56,590 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 5197 transitions. Word has length 189 [2021-12-16 02:02:56,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:02:56,591 INFO L470 AbstractCegarLoop]: Abstraction has 2924 states and 5197 transitions. [2021-12-16 02:02:56,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:56,591 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 5197 transitions. [2021-12-16 02:02:56,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-16 02:02:56,593 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:02:56,593 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:02:56,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-16 02:02:56,594 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:02:56,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:02:56,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1413433343, now seen corresponding path program 1 times [2021-12-16 02:02:56,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:02:56,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593361268] [2021-12-16 02:02:56,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:02:56,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:02:56,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:56,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:02:56,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:56,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:02:56,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:56,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:02:56,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:56,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:02:56,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:56,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:02:56,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:56,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:02:56,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:02:56,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593361268] [2021-12-16 02:02:56,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593361268] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:02:56,721 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:02:56,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:02:56,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244863808] [2021-12-16 02:02:56,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:02:56,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:02:56,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:02:56,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:02:56,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:02:56,726 INFO L87 Difference]: Start difference. First operand 2924 states and 5197 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:58,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:02:58,185 INFO L93 Difference]: Finished difference Result 4035 states and 6941 transitions. [2021-12-16 02:02:58,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:02:58,186 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-16 02:02:58,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:02:58,191 INFO L225 Difference]: With dead ends: 4035 [2021-12-16 02:02:58,192 INFO L226 Difference]: Without dead ends: 3253 [2021-12-16 02:02:58,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:02:58,194 INFO L933 BasicCegarLoop]: 4582 mSDtfsCounter, 5291 mSDsluCounter, 12657 mSDsCounter, 0 mSdLazyCounter, 1265 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5312 SdHoareTripleChecker+Valid, 17239 SdHoareTripleChecker+Invalid, 1379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-16 02:02:58,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5312 Valid, 17239 Invalid, 1379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1265 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-16 02:02:58,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3253 states. [2021-12-16 02:02:58,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3253 to 2924. [2021-12-16 02:02:58,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2924 states, 2859 states have (on average 1.7810423224903813) internal successors, (5092), 2862 states have internal predecessors, (5092), 50 states have call successors, (50), 12 states have call predecessors, (50), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-16 02:02:58,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 5195 transitions. [2021-12-16 02:02:58,269 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 5195 transitions. Word has length 189 [2021-12-16 02:02:58,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:02:58,270 INFO L470 AbstractCegarLoop]: Abstraction has 2924 states and 5195 transitions. [2021-12-16 02:02:58,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:58,270 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 5195 transitions. [2021-12-16 02:02:58,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-16 02:02:58,272 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:02:58,272 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:02:58,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-16 02:02:58,272 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:02:58,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:02:58,273 INFO L85 PathProgramCache]: Analyzing trace with hash -984554495, now seen corresponding path program 1 times [2021-12-16 02:02:58,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:02:58,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604926775] [2021-12-16 02:02:58,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:02:58,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:02:58,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:58,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:02:58,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:58,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:02:58,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:58,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:02:58,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:58,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:02:58,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:58,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:02:58,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:58,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:02:58,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:02:58,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604926775] [2021-12-16 02:02:58,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604926775] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:02:58,468 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:02:58,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 02:02:58,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729091310] [2021-12-16 02:02:58,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:02:58,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 02:02:58,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:02:58,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 02:02:58,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:02:58,472 INFO L87 Difference]: Start difference. First operand 2924 states and 5195 transitions. Second operand has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:03:01,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:03:01,881 INFO L93 Difference]: Finished difference Result 5322 states and 8961 transitions. [2021-12-16 02:03:01,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-16 02:03:01,882 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-16 02:03:01,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:03:01,890 INFO L225 Difference]: With dead ends: 5322 [2021-12-16 02:03:01,890 INFO L226 Difference]: Without dead ends: 4540 [2021-12-16 02:03:01,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-12-16 02:03:01,894 INFO L933 BasicCegarLoop]: 4915 mSDtfsCounter, 6344 mSDsluCounter, 18210 mSDsCounter, 0 mSdLazyCounter, 2672 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6380 SdHoareTripleChecker+Valid, 23125 SdHoareTripleChecker+Invalid, 2803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 2672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-16 02:03:01,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6380 Valid, 23125 Invalid, 2803 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [131 Valid, 2672 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-16 02:03:01,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4540 states. [2021-12-16 02:03:02,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4540 to 3720. [2021-12-16 02:03:02,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3720 states, 3595 states have (on average 1.7321279554937412) internal successors, (6227), 3602 states have internal predecessors, (6227), 94 states have call successors, (94), 24 states have call predecessors, (94), 29 states have return successors, (109), 97 states have call predecessors, (109), 94 states have call successors, (109) [2021-12-16 02:03:02,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3720 states to 3720 states and 6430 transitions. [2021-12-16 02:03:02,082 INFO L78 Accepts]: Start accepts. Automaton has 3720 states and 6430 transitions. Word has length 189 [2021-12-16 02:03:02,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:03:02,082 INFO L470 AbstractCegarLoop]: Abstraction has 3720 states and 6430 transitions. [2021-12-16 02:03:02,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:03:02,083 INFO L276 IsEmpty]: Start isEmpty. Operand 3720 states and 6430 transitions. [2021-12-16 02:03:02,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-16 02:03:02,085 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:03:02,085 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:03:02,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-16 02:03:02,085 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:03:02,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:03:02,086 INFO L85 PathProgramCache]: Analyzing trace with hash -646266945, now seen corresponding path program 1 times [2021-12-16 02:03:02,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:03:02,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992099821] [2021-12-16 02:03:02,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:03:02,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:03:02,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:02,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:03:02,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:02,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:03:02,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:02,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:03:02,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:02,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:03:02,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:02,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:03:02,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:02,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:03:02,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:03:02,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992099821] [2021-12-16 02:03:02,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992099821] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:03:02,221 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:03:02,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:03:02,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823275930] [2021-12-16 02:03:02,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:03:02,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:03:02,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:03:02,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:03:02,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:03:02,222 INFO L87 Difference]: Start difference. First operand 3720 states and 6430 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:03:03,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:03:03,581 INFO L93 Difference]: Finished difference Result 5965 states and 9952 transitions. [2021-12-16 02:03:03,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:03:03,591 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-16 02:03:03,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:03:03,599 INFO L225 Difference]: With dead ends: 5965 [2021-12-16 02:03:03,599 INFO L226 Difference]: Without dead ends: 4387 [2021-12-16 02:03:03,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:03:03,603 INFO L933 BasicCegarLoop]: 4562 mSDtfsCounter, 5135 mSDsluCounter, 16819 mSDsCounter, 0 mSdLazyCounter, 1369 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5156 SdHoareTripleChecker+Valid, 21381 SdHoareTripleChecker+Invalid, 1458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:03:03,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5156 Valid, 21381 Invalid, 1458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1369 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-16 02:03:03,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4387 states. [2021-12-16 02:03:03,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4387 to 3720. [2021-12-16 02:03:03,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3720 states, 3595 states have (on average 1.7310152990264256) internal successors, (6223), 3602 states have internal predecessors, (6223), 94 states have call successors, (94), 24 states have call predecessors, (94), 29 states have return successors, (109), 97 states have call predecessors, (109), 94 states have call successors, (109) [2021-12-16 02:03:03,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3720 states to 3720 states and 6426 transitions. [2021-12-16 02:03:03,811 INFO L78 Accepts]: Start accepts. Automaton has 3720 states and 6426 transitions. Word has length 189 [2021-12-16 02:03:03,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:03:03,811 INFO L470 AbstractCegarLoop]: Abstraction has 3720 states and 6426 transitions. [2021-12-16 02:03:03,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:03:03,812 INFO L276 IsEmpty]: Start isEmpty. Operand 3720 states and 6426 transitions. [2021-12-16 02:03:03,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-16 02:03:03,814 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:03:03,814 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:03:03,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-16 02:03:03,814 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:03:03,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:03:03,815 INFO L85 PathProgramCache]: Analyzing trace with hash -219712447, now seen corresponding path program 1 times [2021-12-16 02:03:03,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:03:03,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377054143] [2021-12-16 02:03:03,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:03:03,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:03:03,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:03,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:03:03,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:03,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:03:03,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:03,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:03:03,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:03,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:03:03,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:03,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:03:03,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:03,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:03:03,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:03:03,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377054143] [2021-12-16 02:03:03,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377054143] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:03:03,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:03:03,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:03:03,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169047152] [2021-12-16 02:03:03,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:03:03,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:03:03,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:03:03,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:03:03,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:03:03,939 INFO L87 Difference]: Start difference. First operand 3720 states and 6426 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:03:05,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:03:05,307 INFO L93 Difference]: Finished difference Result 5956 states and 9922 transitions. [2021-12-16 02:03:05,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:03:05,307 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-16 02:03:05,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:03:05,314 INFO L225 Difference]: With dead ends: 5956 [2021-12-16 02:03:05,315 INFO L226 Difference]: Without dead ends: 4378 [2021-12-16 02:03:05,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:03:05,319 INFO L933 BasicCegarLoop]: 4571 mSDtfsCounter, 5111 mSDsluCounter, 16821 mSDsCounter, 0 mSdLazyCounter, 1385 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5132 SdHoareTripleChecker+Valid, 21392 SdHoareTripleChecker+Invalid, 1472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-16 02:03:05,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5132 Valid, 21392 Invalid, 1472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1385 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-16 02:03:05,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4378 states. [2021-12-16 02:03:05,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4378 to 3720. [2021-12-16 02:03:05,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3720 states, 3595 states have (on average 1.72990264255911) internal successors, (6219), 3602 states have internal predecessors, (6219), 94 states have call successors, (94), 24 states have call predecessors, (94), 29 states have return successors, (109), 97 states have call predecessors, (109), 94 states have call successors, (109) [2021-12-16 02:03:05,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3720 states to 3720 states and 6422 transitions. [2021-12-16 02:03:05,524 INFO L78 Accepts]: Start accepts. Automaton has 3720 states and 6422 transitions. Word has length 189 [2021-12-16 02:03:05,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:03:05,524 INFO L470 AbstractCegarLoop]: Abstraction has 3720 states and 6422 transitions. [2021-12-16 02:03:05,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:03:05,524 INFO L276 IsEmpty]: Start isEmpty. Operand 3720 states and 6422 transitions. [2021-12-16 02:03:05,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-16 02:03:05,526 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:03:05,526 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:03:05,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-16 02:03:05,526 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:03:05,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:03:05,527 INFO L85 PathProgramCache]: Analyzing trace with hash -760141953, now seen corresponding path program 1 times [2021-12-16 02:03:05,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:03:05,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096757893] [2021-12-16 02:03:05,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:03:05,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:03:05,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:05,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:03:05,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:05,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:03:05,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:05,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:03:05,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:05,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:03:05,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:05,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:03:05,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:05,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:03:05,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:03:05,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096757893] [2021-12-16 02:03:05,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096757893] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:03:05,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:03:05,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:03:05,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378060844] [2021-12-16 02:03:05,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:03:05,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:03:05,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:03:05,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:03:05,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:03:05,633 INFO L87 Difference]: Start difference. First operand 3720 states and 6422 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:03:07,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:03:07,105 INFO L93 Difference]: Finished difference Result 5947 states and 9892 transitions. [2021-12-16 02:03:07,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:03:07,106 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-16 02:03:07,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:03:07,138 INFO L225 Difference]: With dead ends: 5947 [2021-12-16 02:03:07,138 INFO L226 Difference]: Without dead ends: 4369 [2021-12-16 02:03:07,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:03:07,142 INFO L933 BasicCegarLoop]: 4567 mSDtfsCounter, 5109 mSDsluCounter, 16821 mSDsCounter, 0 mSdLazyCounter, 1373 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5130 SdHoareTripleChecker+Valid, 21388 SdHoareTripleChecker+Invalid, 1460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:03:07,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5130 Valid, 21388 Invalid, 1460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1373 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-16 02:03:07,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4369 states. [2021-12-16 02:03:07,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4369 to 3720. [2021-12-16 02:03:07,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3720 states, 3595 states have (on average 1.7287899860917941) internal successors, (6215), 3602 states have internal predecessors, (6215), 94 states have call successors, (94), 24 states have call predecessors, (94), 29 states have return successors, (109), 97 states have call predecessors, (109), 94 states have call successors, (109) [2021-12-16 02:03:07,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3720 states to 3720 states and 6418 transitions. [2021-12-16 02:03:07,320 INFO L78 Accepts]: Start accepts. Automaton has 3720 states and 6418 transitions. Word has length 189 [2021-12-16 02:03:07,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:03:07,321 INFO L470 AbstractCegarLoop]: Abstraction has 3720 states and 6418 transitions. [2021-12-16 02:03:07,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:03:07,321 INFO L276 IsEmpty]: Start isEmpty. Operand 3720 states and 6418 transitions. [2021-12-16 02:03:07,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-16 02:03:07,322 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:03:07,323 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:03:07,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-16 02:03:07,323 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:03:07,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:03:07,323 INFO L85 PathProgramCache]: Analyzing trace with hash -916122495, now seen corresponding path program 1 times [2021-12-16 02:03:07,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:03:07,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180883368] [2021-12-16 02:03:07,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:03:07,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:03:07,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:07,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:03:07,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:07,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:03:07,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:07,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:03:07,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:07,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:03:07,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:07,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:03:07,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:07,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:03:07,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:03:07,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180883368] [2021-12-16 02:03:07,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180883368] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:03:07,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:03:07,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:03:07,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907759820] [2021-12-16 02:03:07,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:03:07,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:03:07,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:03:07,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:03:07,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:03:07,451 INFO L87 Difference]: Start difference. First operand 3720 states and 6418 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:03:08,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:03:08,917 INFO L93 Difference]: Finished difference Result 5938 states and 9862 transitions. [2021-12-16 02:03:08,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:03:08,917 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-16 02:03:08,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:03:08,925 INFO L225 Difference]: With dead ends: 5938 [2021-12-16 02:03:08,925 INFO L226 Difference]: Without dead ends: 4360 [2021-12-16 02:03:08,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:03:08,933 INFO L933 BasicCegarLoop]: 4561 mSDtfsCounter, 5287 mSDsluCounter, 12657 mSDsCounter, 0 mSdLazyCounter, 1217 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5308 SdHoareTripleChecker+Valid, 17218 SdHoareTripleChecker+Invalid, 1334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:03:08,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5308 Valid, 17218 Invalid, 1334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1217 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-16 02:03:08,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4360 states. [2021-12-16 02:03:09,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4360 to 3720. [2021-12-16 02:03:09,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3720 states, 3595 states have (on average 1.7276773296244785) internal successors, (6211), 3602 states have internal predecessors, (6211), 94 states have call successors, (94), 24 states have call predecessors, (94), 29 states have return successors, (109), 97 states have call predecessors, (109), 94 states have call successors, (109) [2021-12-16 02:03:09,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3720 states to 3720 states and 6414 transitions. [2021-12-16 02:03:09,176 INFO L78 Accepts]: Start accepts. Automaton has 3720 states and 6414 transitions. Word has length 189 [2021-12-16 02:03:09,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:03:09,176 INFO L470 AbstractCegarLoop]: Abstraction has 3720 states and 6414 transitions. [2021-12-16 02:03:09,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:03:09,177 INFO L276 IsEmpty]: Start isEmpty. Operand 3720 states and 6414 transitions. [2021-12-16 02:03:09,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-16 02:03:09,179 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:03:09,179 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:03:09,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-16 02:03:09,180 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:03:09,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:03:09,180 INFO L85 PathProgramCache]: Analyzing trace with hash -505512129, now seen corresponding path program 1 times [2021-12-16 02:03:09,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:03:09,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375106590] [2021-12-16 02:03:09,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:03:09,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:03:09,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:09,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:03:09,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:09,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:03:09,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:09,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:03:09,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:09,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:03:09,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:09,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:03:09,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:09,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:03:09,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:03:09,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375106590] [2021-12-16 02:03:09,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375106590] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:03:09,324 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:03:09,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 02:03:09,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241536922] [2021-12-16 02:03:09,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:03:09,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 02:03:09,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:03:09,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 02:03:09,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:03:09,326 INFO L87 Difference]: Start difference. First operand 3720 states and 6414 transitions. Second operand has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)