./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label45+token_ring.02.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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_label45+token_ring.02.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 5d56dff15b0de2a89db18b71695d59ff3710bc2ebb344dc571e9d71343d9d530 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 19:36:42,206 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 19:36:42,208 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 19:36:42,242 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 19:36:42,242 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 19:36:42,243 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 19:36:42,245 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 19:36:42,246 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 19:36:42,247 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 19:36:42,251 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 19:36:42,251 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 19:36:42,253 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 19:36:42,253 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 19:36:42,254 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 19:36:42,255 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 19:36:42,257 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 19:36:42,258 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 19:36:42,259 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 19:36:42,260 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 19:36:42,264 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 19:36:42,265 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 19:36:42,266 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 19:36:42,266 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 19:36:42,267 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 19:36:42,268 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 19:36:42,270 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 19:36:42,270 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 19:36:42,270 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 19:36:42,271 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 19:36:42,287 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 19:36:42,288 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 19:36:42,288 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 19:36:42,289 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 19:36:42,289 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 19:36:42,290 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 19:36:42,291 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 19:36:42,291 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 19:36:42,292 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 19:36:42,292 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 19:36:42,292 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 19:36:42,292 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 19:36:42,294 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 19:36:42,295 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 19:36:42,313 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 19:36:42,314 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 19:36:42,314 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 19:36:42,315 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 19:36:42,315 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 19:36:42,315 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 19:36:42,316 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 19:36:42,316 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 19:36:42,316 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 19:36:42,316 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 19:36:42,316 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 19:36:42,316 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 19:36:42,317 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 19:36:42,317 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 19:36:42,317 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 19:36:42,317 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 19:36:42,318 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 19:36:42,318 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 19:36:42,320 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 19:36:42,320 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 19:36:42,323 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 19:36:42,323 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 19:36:42,324 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 19:36:42,324 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 19:36:42,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 19:36:42,325 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 19:36:42,325 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 19:36:42,325 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 19:36:42,325 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 19:36:42,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 19:36:42,326 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 19:36:42,326 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 19:36:42,326 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 19:36:42,326 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5d56dff15b0de2a89db18b71695d59ff3710bc2ebb344dc571e9d71343d9d530 [2022-07-22 19:36:42,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 19:36:42,516 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 19:36:42,517 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 19:36:42,518 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 19:36:42,519 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 19:36:42,519 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label45+token_ring.02.cil-2.c [2022-07-22 19:36:42,586 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e977767a/3dbf6c23a4824215943c5034108ef5a6/FLAGf77a95319 [2022-07-22 19:36:43,275 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 19:36:43,275 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.02.cil-2.c [2022-07-22 19:36:43,315 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e977767a/3dbf6c23a4824215943c5034108ef5a6/FLAGf77a95319 [2022-07-22 19:36:43,386 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e977767a/3dbf6c23a4824215943c5034108ef5a6 [2022-07-22 19:36:43,388 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 19:36:43,389 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 19:36:43,390 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 19:36:43,390 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 19:36:43,393 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 19:36:43,393 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 07:36:43" (1/1) ... [2022-07-22 19:36:43,394 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b188adc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:36:43, skipping insertion in model container [2022-07-22 19:36:43,394 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 07:36:43" (1/1) ... [2022-07-22 19:36:43,399 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 19:36:43,552 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 19:36:45,440 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_label45+token_ring.02.cil-2.c[380323,380336] [2022-07-22 19:36:45,462 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_label45+token_ring.02.cil-2.c[383339,383352] [2022-07-22 19:36:45,585 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 19:36:45,592 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 19:36:46,177 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_label45+token_ring.02.cil-2.c[380323,380336] [2022-07-22 19:36:46,183 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_label45+token_ring.02.cil-2.c[383339,383352] [2022-07-22 19:36:46,200 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 19:36:46,240 INFO L208 MainTranslator]: Completed translation [2022-07-22 19:36:46,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:36:46 WrapperNode [2022-07-22 19:36:46,241 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 19:36:46,242 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 19:36:46,242 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 19:36:46,242 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 19:36:46,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:36:46" (1/1) ... [2022-07-22 19:36:46,308 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:36:46" (1/1) ... [2022-07-22 19:36:46,565 INFO L137 Inliner]: procedures = 48, calls = 48, calls flagged for inlining = 25, calls inlined = 25, statements flattened = 12624 [2022-07-22 19:36:46,566 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 19:36:46,567 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 19:36:46,567 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 19:36:46,567 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 19:36:46,573 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:36:46" (1/1) ... [2022-07-22 19:36:46,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:36:46" (1/1) ... [2022-07-22 19:36:46,693 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:36:46" (1/1) ... [2022-07-22 19:36:46,701 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:36:46" (1/1) ... [2022-07-22 19:36:46,795 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:36:46" (1/1) ... [2022-07-22 19:36:46,824 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:36:46" (1/1) ... [2022-07-22 19:36:46,848 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:36:46" (1/1) ... [2022-07-22 19:36:46,892 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 19:36:46,893 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 19:36:46,893 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 19:36:46,893 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 19:36:46,896 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:36:46" (1/1) ... [2022-07-22 19:36:46,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 19:36:46,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 19:36:46,948 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) [2022-07-22 19:36:47,007 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 [2022-07-22 19:36:47,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 19:36:47,025 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-07-22 19:36:47,026 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-07-22 19:36:47,026 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-22 19:36:47,026 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-22 19:36:47,026 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-22 19:36:47,026 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-22 19:36:47,026 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-22 19:36:47,026 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-22 19:36:47,026 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-22 19:36:47,027 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-22 19:36:47,027 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-22 19:36:47,027 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-22 19:36:47,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 19:36:47,027 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-22 19:36:47,027 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-22 19:36:47,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 19:36:47,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 19:36:47,096 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 19:36:47,097 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 19:36:52,261 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 19:36:52,280 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 19:36:52,280 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-07-22 19:36:52,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 07:36:52 BoogieIcfgContainer [2022-07-22 19:36:52,283 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 19:36:52,284 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 19:36:52,284 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 19:36:52,287 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 19:36:52,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 07:36:43" (1/3) ... [2022-07-22 19:36:52,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bee526e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 07:36:52, skipping insertion in model container [2022-07-22 19:36:52,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:36:46" (2/3) ... [2022-07-22 19:36:52,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bee526e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 07:36:52, skipping insertion in model container [2022-07-22 19:36:52,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 07:36:52" (3/3) ... [2022-07-22 19:36:52,289 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.02.cil-2.c [2022-07-22 19:36:52,298 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 19:36:52,298 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-22 19:36:52,354 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 19:36:52,359 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1818c7b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1976ea9b [2022-07-22 19:36:52,359 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-22 19:36:52,367 INFO L276 IsEmpty]: Start isEmpty. Operand has 2323 states, 2295 states have (on average 1.857516339869281) internal successors, (4263), 2300 states have internal predecessors, (4263), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2022-07-22 19:36:52,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-22 19:36:52,377 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:36:52,377 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:36:52,378 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:36:52,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:36:52,382 INFO L85 PathProgramCache]: Analyzing trace with hash -2062992276, now seen corresponding path program 1 times [2022-07-22 19:36:52,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:36:52,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922517046] [2022-07-22 19:36:52,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:36:52,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:36:52,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:52,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:36:52,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:52,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 19:36:52,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:52,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 19:36:52,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:52,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:36:52,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:52,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 19:36:52,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:52,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:36:52,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:36:52,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922517046] [2022-07-22 19:36:52,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922517046] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:36:52,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:36:52,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 19:36:52,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726632001] [2022-07-22 19:36:52,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:36:52,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 19:36:52,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:36:52,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 19:36:52,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 19:36:52,600 INFO L87 Difference]: Start difference. First operand has 2323 states, 2295 states have (on average 1.857516339869281) internal successors, (4263), 2300 states have internal predecessors, (4263), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:36:53,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:36:53,355 INFO L93 Difference]: Finished difference Result 4824 states and 8887 transitions. [2022-07-22 19:36:53,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 19:36:53,357 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 69 [2022-07-22 19:36:53,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:36:53,391 INFO L225 Difference]: With dead ends: 4824 [2022-07-22 19:36:53,391 INFO L226 Difference]: Without dead ends: 2441 [2022-07-22 19:36:53,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-22 19:36:53,403 INFO L413 NwaCegarLoop]: 4249 mSDtfsCounter, 4444 mSDsluCounter, 12443 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4453 SdHoareTripleChecker+Valid, 16692 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 19:36:53,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4453 Valid, 16692 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 19:36:53,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2441 states. [2022-07-22 19:36:53,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2441 to 2376. [2022-07-22 19:36:53,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2376 states, 2332 states have (on average 1.8340480274442539) internal successors, (4277), 2336 states have internal predecessors, (4277), 29 states have call successors, (29), 13 states have call predecessors, (29), 13 states have return successors, (30), 27 states have call predecessors, (30), 27 states have call successors, (30) [2022-07-22 19:36:53,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2376 states to 2376 states and 4336 transitions. [2022-07-22 19:36:53,500 INFO L78 Accepts]: Start accepts. Automaton has 2376 states and 4336 transitions. Word has length 69 [2022-07-22 19:36:53,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:36:53,501 INFO L495 AbstractCegarLoop]: Abstraction has 2376 states and 4336 transitions. [2022-07-22 19:36:53,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:36:53,502 INFO L276 IsEmpty]: Start isEmpty. Operand 2376 states and 4336 transitions. [2022-07-22 19:36:53,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-22 19:36:53,504 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:36:53,504 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:36:53,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 19:36:53,504 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:36:53,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:36:53,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1960277912, now seen corresponding path program 1 times [2022-07-22 19:36:53,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:36:53,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206187458] [2022-07-22 19:36:53,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:36:53,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:36:53,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:53,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:36:53,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:53,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 19:36:53,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:53,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 19:36:53,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:53,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:36:53,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:53,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 19:36:53,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:53,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:36:53,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:36:53,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206187458] [2022-07-22 19:36:53,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206187458] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:36:53,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:36:53,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:36:53,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358671144] [2022-07-22 19:36:53,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:36:53,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:36:53,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:36:53,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:36:53,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:36:53,592 INFO L87 Difference]: Start difference. First operand 2376 states and 4336 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:36:54,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:36:54,290 INFO L93 Difference]: Finished difference Result 2838 states and 5030 transitions. [2022-07-22 19:36:54,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:36:54,290 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 69 [2022-07-22 19:36:54,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:36:54,299 INFO L225 Difference]: With dead ends: 2838 [2022-07-22 19:36:54,300 INFO L226 Difference]: Without dead ends: 2593 [2022-07-22 19:36:54,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:36:54,303 INFO L413 NwaCegarLoop]: 4270 mSDtfsCounter, 4365 mSDsluCounter, 16510 mSDsCounter, 0 mSdLazyCounter, 871 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4374 SdHoareTripleChecker+Valid, 20780 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 19:36:54,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4374 Valid, 20780 Invalid, 931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 871 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 19:36:54,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2593 states. [2022-07-22 19:36:54,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2593 to 2490. [2022-07-22 19:36:54,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2490 states, 2428 states have (on average 1.82001647446458) internal successors, (4419), 2433 states have internal predecessors, (4419), 40 states have call successors, (40), 19 states have call predecessors, (40), 20 states have return successors, (43), 39 states have call predecessors, (43), 38 states have call successors, (43) [2022-07-22 19:36:54,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2490 states to 2490 states and 4502 transitions. [2022-07-22 19:36:54,356 INFO L78 Accepts]: Start accepts. Automaton has 2490 states and 4502 transitions. Word has length 69 [2022-07-22 19:36:54,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:36:54,356 INFO L495 AbstractCegarLoop]: Abstraction has 2490 states and 4502 transitions. [2022-07-22 19:36:54,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:36:54,357 INFO L276 IsEmpty]: Start isEmpty. Operand 2490 states and 4502 transitions. [2022-07-22 19:36:54,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-22 19:36:54,358 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:36:54,358 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:36:54,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 19:36:54,358 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:36:54,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:36:54,359 INFO L85 PathProgramCache]: Analyzing trace with hash -573492502, now seen corresponding path program 1 times [2022-07-22 19:36:54,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:36:54,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679514951] [2022-07-22 19:36:54,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:36:54,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:36:54,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:54,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:36:54,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:54,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 19:36:54,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:54,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 19:36:54,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:54,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:36:54,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:54,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 19:36:54,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:54,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:36:54,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:36:54,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679514951] [2022-07-22 19:36:54,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679514951] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:36:54,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:36:54,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:36:54,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180980293] [2022-07-22 19:36:54,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:36:54,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:36:54,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:36:54,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:36:54,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:36:54,440 INFO L87 Difference]: Start difference. First operand 2490 states and 4502 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:36:55,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:36:55,129 INFO L93 Difference]: Finished difference Result 3239 states and 5624 transitions. [2022-07-22 19:36:55,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:36:55,130 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 69 [2022-07-22 19:36:55,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:36:55,140 INFO L225 Difference]: With dead ends: 3239 [2022-07-22 19:36:55,140 INFO L226 Difference]: Without dead ends: 2880 [2022-07-22 19:36:55,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:36:55,147 INFO L413 NwaCegarLoop]: 4181 mSDtfsCounter, 4399 mSDsluCounter, 16296 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4408 SdHoareTripleChecker+Valid, 20477 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 19:36:55,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4408 Valid, 20477 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 19:36:55,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2880 states. [2022-07-22 19:36:55,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2880 to 2719. [2022-07-22 19:36:55,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2719 states, 2621 states have (on average 1.794734834032812) internal successors, (4704), 2628 states have internal predecessors, (4704), 62 states have call successors, (62), 31 states have call predecessors, (62), 34 states have return successors, (73), 63 states have call predecessors, (73), 60 states have call successors, (73) [2022-07-22 19:36:55,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2719 states to 2719 states and 4839 transitions. [2022-07-22 19:36:55,220 INFO L78 Accepts]: Start accepts. Automaton has 2719 states and 4839 transitions. Word has length 69 [2022-07-22 19:36:55,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:36:55,220 INFO L495 AbstractCegarLoop]: Abstraction has 2719 states and 4839 transitions. [2022-07-22 19:36:55,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:36:55,221 INFO L276 IsEmpty]: Start isEmpty. Operand 2719 states and 4839 transitions. [2022-07-22 19:36:55,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-22 19:36:55,223 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:36:55,224 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:36:55,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 19:36:55,224 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:36:55,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:36:55,225 INFO L85 PathProgramCache]: Analyzing trace with hash 302526504, now seen corresponding path program 1 times [2022-07-22 19:36:55,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:36:55,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097013903] [2022-07-22 19:36:55,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:36:55,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:36:55,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:55,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:36:55,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:55,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 19:36:55,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:55,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 19:36:55,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:55,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:36:55,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:55,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 19:36:55,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:55,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:36:55,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:36:55,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097013903] [2022-07-22 19:36:55,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097013903] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:36:55,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:36:55,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:36:55,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658794977] [2022-07-22 19:36:55,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:36:55,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:36:55,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:36:55,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:36:55,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:36:55,336 INFO L87 Difference]: Start difference. First operand 2719 states and 4839 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:36:56,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:36:56,054 INFO L93 Difference]: Finished difference Result 4113 states and 6915 transitions. [2022-07-22 19:36:56,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 19:36:56,055 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 69 [2022-07-22 19:36:56,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:36:56,067 INFO L225 Difference]: With dead ends: 4113 [2022-07-22 19:36:56,067 INFO L226 Difference]: Without dead ends: 3525 [2022-07-22 19:36:56,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 19:36:56,071 INFO L413 NwaCegarLoop]: 4279 mSDtfsCounter, 4371 mSDsluCounter, 16499 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4379 SdHoareTripleChecker+Valid, 20778 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 19:36:56,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4379 Valid, 20778 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 946 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 19:36:56,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3525 states. [2022-07-22 19:36:56,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3525 to 3131. [2022-07-22 19:36:56,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3131 states, 2965 states have (on average 1.7551433389544688) internal successors, (5204), 2976 states have internal predecessors, (5204), 102 states have call successors, (102), 55 states have call predecessors, (102), 62 states have return successors, (135), 107 states have call predecessors, (135), 100 states have call successors, (135) [2022-07-22 19:36:56,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3131 states to 3131 states and 5441 transitions. [2022-07-22 19:36:56,151 INFO L78 Accepts]: Start accepts. Automaton has 3131 states and 5441 transitions. Word has length 69 [2022-07-22 19:36:56,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:36:56,152 INFO L495 AbstractCegarLoop]: Abstraction has 3131 states and 5441 transitions. [2022-07-22 19:36:56,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:36:56,152 INFO L276 IsEmpty]: Start isEmpty. Operand 3131 states and 5441 transitions. [2022-07-22 19:36:56,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-22 19:36:56,153 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:36:56,153 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:36:56,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 19:36:56,154 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:36:56,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:36:56,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1840866534, now seen corresponding path program 1 times [2022-07-22 19:36:56,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:36:56,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222277514] [2022-07-22 19:36:56,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:36:56,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:36:56,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:56,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:36:56,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:56,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 19:36:56,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:56,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 19:36:56,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:56,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:36:56,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:56,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 19:36:56,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:56,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:36:56,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:36:56,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222277514] [2022-07-22 19:36:56,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222277514] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:36:56,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:36:56,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:36:56,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644655011] [2022-07-22 19:36:56,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:36:56,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:36:56,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:36:56,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:36:56,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:36:56,211 INFO L87 Difference]: Start difference. First operand 3131 states and 5441 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:36:56,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:36:56,875 INFO L93 Difference]: Finished difference Result 5511 states and 8955 transitions. [2022-07-22 19:36:56,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 19:36:56,875 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 69 [2022-07-22 19:36:56,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:36:56,891 INFO L225 Difference]: With dead ends: 5511 [2022-07-22 19:36:56,891 INFO L226 Difference]: Without dead ends: 4511 [2022-07-22 19:36:56,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 19:36:56,897 INFO L413 NwaCegarLoop]: 4248 mSDtfsCounter, 4376 mSDsluCounter, 16502 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4388 SdHoareTripleChecker+Valid, 20750 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 19:36:56,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4388 Valid, 20750 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 837 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 19:36:56,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4511 states. [2022-07-22 19:36:56,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4511 to 3988. [2022-07-22 19:36:56,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3988 states, 3690 states have (on average 1.7002710027100272) internal successors, (6274), 3709 states have internal predecessors, (6274), 178 states have call successors, (178), 103 states have call predecessors, (178), 118 states have return successors, (273), 191 states have call predecessors, (273), 176 states have call successors, (273) [2022-07-22 19:36:57,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3988 states to 3988 states and 6725 transitions. [2022-07-22 19:36:57,007 INFO L78 Accepts]: Start accepts. Automaton has 3988 states and 6725 transitions. Word has length 69 [2022-07-22 19:36:57,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:36:57,008 INFO L495 AbstractCegarLoop]: Abstraction has 3988 states and 6725 transitions. [2022-07-22 19:36:57,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:36:57,008 INFO L276 IsEmpty]: Start isEmpty. Operand 3988 states and 6725 transitions. [2022-07-22 19:36:57,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-22 19:36:57,010 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:36:57,010 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:36:57,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 19:36:57,010 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:36:57,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:36:57,011 INFO L85 PathProgramCache]: Analyzing trace with hash -187719576, now seen corresponding path program 1 times [2022-07-22 19:36:57,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:36:57,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095866060] [2022-07-22 19:36:57,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:36:57,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:36:57,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:57,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:36:57,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:57,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 19:36:57,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:57,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 19:36:57,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:57,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:36:57,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:57,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 19:36:57,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:57,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:36:57,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:36:57,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095866060] [2022-07-22 19:36:57,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095866060] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:36:57,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:36:57,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 19:36:57,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315214128] [2022-07-22 19:36:57,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:36:57,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 19:36:57,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:36:57,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 19:36:57,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 19:36:57,061 INFO L87 Difference]: Start difference. First operand 3988 states and 6725 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:36:57,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:36:57,694 INFO L93 Difference]: Finished difference Result 7372 states and 11760 transitions. [2022-07-22 19:36:57,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 19:36:57,694 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 69 [2022-07-22 19:36:57,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:36:57,712 INFO L225 Difference]: With dead ends: 7372 [2022-07-22 19:36:57,712 INFO L226 Difference]: Without dead ends: 5516 [2022-07-22 19:36:57,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-22 19:36:57,719 INFO L413 NwaCegarLoop]: 4312 mSDtfsCounter, 4499 mSDsluCounter, 12269 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4524 SdHoareTripleChecker+Valid, 16581 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 19:36:57,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4524 Valid, 16581 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 654 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 19:36:57,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5516 states. [2022-07-22 19:36:57,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5516 to 4929. [2022-07-22 19:36:57,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4929 states, 4473 states have (on average 1.6492287055667338) internal successors, (7377), 4509 states have internal predecessors, (7377), 274 states have call successors, (274), 157 states have call predecessors, (274), 180 states have return successors, (397), 278 states have call predecessors, (397), 272 states have call successors, (397) [2022-07-22 19:36:57,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4929 states to 4929 states and 8048 transitions. [2022-07-22 19:36:57,831 INFO L78 Accepts]: Start accepts. Automaton has 4929 states and 8048 transitions. Word has length 69 [2022-07-22 19:36:57,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:36:57,831 INFO L495 AbstractCegarLoop]: Abstraction has 4929 states and 8048 transitions. [2022-07-22 19:36:57,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:36:57,832 INFO L276 IsEmpty]: Start isEmpty. Operand 4929 states and 8048 transitions. [2022-07-22 19:36:57,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-22 19:36:57,836 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:36:57,837 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:36:57,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 19:36:57,837 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:36:57,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:36:57,837 INFO L85 PathProgramCache]: Analyzing trace with hash 770021099, now seen corresponding path program 1 times [2022-07-22 19:36:57,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:36:57,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412412316] [2022-07-22 19:36:57,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:36:57,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:36:57,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:57,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:36:57,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:57,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 19:36:57,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:57,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 19:36:57,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:57,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:36:57,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:57,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 19:36:57,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:57,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 19:36:57,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:57,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 19:36:57,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:57,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 19:36:57,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:57,904 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-22 19:36:57,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:36:57,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412412316] [2022-07-22 19:36:57,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412412316] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 19:36:57,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39251552] [2022-07-22 19:36:57,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:36:57,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 19:36:57,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 19:36:57,906 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 19:36:57,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 19:36:58,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:58,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 19:36:58,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 19:36:58,070 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-22 19:36:58,071 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 19:36:58,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39251552] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:36:58,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 19:36:58,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-22 19:36:58,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182144557] [2022-07-22 19:36:58,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:36:58,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 19:36:58,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:36:58,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 19:36:58,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:36:58,073 INFO L87 Difference]: Start difference. First operand 4929 states and 8048 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 19:36:58,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:36:58,204 INFO L93 Difference]: Finished difference Result 10380 states and 16066 transitions. [2022-07-22 19:36:58,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 19:36:58,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 111 [2022-07-22 19:36:58,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:36:58,230 INFO L225 Difference]: With dead ends: 10380 [2022-07-22 19:36:58,230 INFO L226 Difference]: Without dead ends: 7583 [2022-07-22 19:36:58,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:36:58,240 INFO L413 NwaCegarLoop]: 4162 mSDtfsCounter, 4110 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4110 SdHoareTripleChecker+Valid, 4333 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 19:36:58,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4110 Valid, 4333 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 19:36:58,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7583 states. [2022-07-22 19:36:58,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7583 to 7527. [2022-07-22 19:36:58,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7527 states, 6657 states have (on average 1.5841970857743728) internal successors, (10546), 6726 states have internal predecessors, (10546), 512 states have call successors, (512), 309 states have call predecessors, (512), 356 states have return successors, (745), 507 states have call predecessors, (745), 510 states have call successors, (745) [2022-07-22 19:36:58,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7527 states to 7527 states and 11803 transitions. [2022-07-22 19:36:58,429 INFO L78 Accepts]: Start accepts. Automaton has 7527 states and 11803 transitions. Word has length 111 [2022-07-22 19:36:58,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:36:58,429 INFO L495 AbstractCegarLoop]: Abstraction has 7527 states and 11803 transitions. [2022-07-22 19:36:58,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 19:36:58,430 INFO L276 IsEmpty]: Start isEmpty. Operand 7527 states and 11803 transitions. [2022-07-22 19:36:58,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-22 19:36:58,437 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:36:58,437 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:36:58,459 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-22 19:36:58,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 19:36:58,655 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:36:58,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:36:58,655 INFO L85 PathProgramCache]: Analyzing trace with hash -122535733, now seen corresponding path program 1 times [2022-07-22 19:36:58,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:36:58,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715256512] [2022-07-22 19:36:58,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:36:58,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:36:58,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:58,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:36:58,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:58,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 19:36:58,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:58,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 19:36:58,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:58,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:36:58,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:58,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 19:36:58,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:58,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 19:36:58,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:58,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 19:36:58,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:58,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 19:36:58,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:58,724 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-22 19:36:58,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:36:58,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715256512] [2022-07-22 19:36:58,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715256512] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 19:36:58,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795892957] [2022-07-22 19:36:58,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:36:58,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 19:36:58,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 19:36:58,726 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 19:36:58,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 19:36:58,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:58,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 19:36:58,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 19:36:58,846 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-22 19:36:58,846 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 19:36:58,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795892957] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:36:58,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 19:36:58,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-22 19:36:58,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609312795] [2022-07-22 19:36:58,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:36:58,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 19:36:58,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:36:58,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 19:36:58,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:36:58,848 INFO L87 Difference]: Start difference. First operand 7527 states and 11803 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 19:36:59,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:36:59,146 INFO L93 Difference]: Finished difference Result 17935 states and 27159 transitions. [2022-07-22 19:36:59,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 19:36:59,147 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 111 [2022-07-22 19:36:59,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:36:59,183 INFO L225 Difference]: With dead ends: 17935 [2022-07-22 19:36:59,191 INFO L226 Difference]: Without dead ends: 12541 [2022-07-22 19:36:59,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:36:59,233 INFO L413 NwaCegarLoop]: 4311 mSDtfsCounter, 154 mSDsluCounter, 4150 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 8461 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 19:36:59,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 8461 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 19:36:59,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12541 states. [2022-07-22 19:36:59,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12541 to 12541. [2022-07-22 19:36:59,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12541 states, 10858 states have (on average 1.5209983422361393) internal successors, (16515), 10976 states have internal predecessors, (16515), 977 states have call successors, (977), 609 states have call predecessors, (977), 704 states have return successors, (1596), 987 states have call predecessors, (1596), 975 states have call successors, (1596) [2022-07-22 19:36:59,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12541 states to 12541 states and 19088 transitions. [2022-07-22 19:36:59,559 INFO L78 Accepts]: Start accepts. Automaton has 12541 states and 19088 transitions. Word has length 111 [2022-07-22 19:36:59,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:36:59,560 INFO L495 AbstractCegarLoop]: Abstraction has 12541 states and 19088 transitions. [2022-07-22 19:36:59,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 19:36:59,560 INFO L276 IsEmpty]: Start isEmpty. Operand 12541 states and 19088 transitions. [2022-07-22 19:36:59,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-07-22 19:36:59,580 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:36:59,581 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:36:59,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 19:36:59,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-07-22 19:36:59,798 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:36:59,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:36:59,798 INFO L85 PathProgramCache]: Analyzing trace with hash 327119452, now seen corresponding path program 1 times [2022-07-22 19:36:59,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:36:59,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855021998] [2022-07-22 19:36:59,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:36:59,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:36:59,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:59,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:36:59,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:59,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 19:36:59,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:59,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 19:36:59,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:59,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:36:59,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:59,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 19:36:59,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:59,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 19:36:59,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:59,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 19:36:59,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:59,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 19:36:59,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:59,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 19:36:59,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:59,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-22 19:36:59,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:59,869 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-22 19:36:59,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:36:59,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855021998] [2022-07-22 19:36:59,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855021998] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 19:36:59,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859564597] [2022-07-22 19:36:59,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:36:59,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 19:36:59,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 19:36:59,871 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 19:36:59,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 19:36:59,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:36:59,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 19:36:59,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 19:37:00,066 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-22 19:37:00,067 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 19:37:00,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859564597] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:37:00,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 19:37:00,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-22 19:37:00,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141990887] [2022-07-22 19:37:00,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:37:00,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 19:37:00,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:37:00,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 19:37:00,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:37:00,068 INFO L87 Difference]: Start difference. First operand 12541 states and 19088 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-22 19:37:00,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:37:00,571 INFO L93 Difference]: Finished difference Result 32917 states and 49009 transitions. [2022-07-22 19:37:00,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 19:37:00,572 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 143 [2022-07-22 19:37:00,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:37:00,645 INFO L225 Difference]: With dead ends: 32917 [2022-07-22 19:37:00,645 INFO L226 Difference]: Without dead ends: 22513 [2022-07-22 19:37:00,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:37:00,677 INFO L413 NwaCegarLoop]: 4183 mSDtfsCounter, 4068 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4068 SdHoareTripleChecker+Valid, 4354 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 19:37:00,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4068 Valid, 4354 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 19:37:00,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22513 states. [2022-07-22 19:37:01,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22513 to 22301. [2022-07-22 19:37:01,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22301 states, 19038 states have (on average 1.4810904506775922) internal successors, (28197), 19270 states have internal predecessors, (28197), 1871 states have call successors, (1871), 1199 states have call predecessors, (1871), 1390 states have return successors, (3038), 1863 states have call predecessors, (3038), 1869 states have call successors, (3038) [2022-07-22 19:37:01,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22301 states to 22301 states and 33106 transitions. [2022-07-22 19:37:01,507 INFO L78 Accepts]: Start accepts. Automaton has 22301 states and 33106 transitions. Word has length 143 [2022-07-22 19:37:01,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:37:01,508 INFO L495 AbstractCegarLoop]: Abstraction has 22301 states and 33106 transitions. [2022-07-22 19:37:01,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-22 19:37:01,508 INFO L276 IsEmpty]: Start isEmpty. Operand 22301 states and 33106 transitions. [2022-07-22 19:37:01,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-22 19:37:01,553 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:37:01,553 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:37:01,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 19:37:01,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 19:37:01,774 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:37:01,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:37:01,775 INFO L85 PathProgramCache]: Analyzing trace with hash 382011958, now seen corresponding path program 1 times [2022-07-22 19:37:01,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:37:01,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497416313] [2022-07-22 19:37:01,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:37:01,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:37:01,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:01,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:37:01,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:01,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 19:37:01,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:01,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 19:37:01,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:01,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:37:01,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:01,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 19:37:01,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:01,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 19:37:01,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:01,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 19:37:01,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:01,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 19:37:01,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:01,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-22 19:37:01,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:01,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 19:37:01,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:01,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-22 19:37:01,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:01,871 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-07-22 19:37:01,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:37:01,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497416313] [2022-07-22 19:37:01,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497416313] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 19:37:01,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360770435] [2022-07-22 19:37:01,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:37:01,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 19:37:01,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 19:37:01,888 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 19:37:01,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 19:37:01,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:01,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 19:37:01,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 19:37:02,053 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 19:37:02,054 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 19:37:02,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360770435] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:37:02,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 19:37:02,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-22 19:37:02,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153766436] [2022-07-22 19:37:02,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:37:02,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 19:37:02,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:37:02,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 19:37:02,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:37:02,056 INFO L87 Difference]: Start difference. First operand 22301 states and 33106 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-22 19:37:02,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:37:02,829 INFO L93 Difference]: Finished difference Result 44821 states and 66508 transitions. [2022-07-22 19:37:02,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 19:37:02,829 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 160 [2022-07-22 19:37:02,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:37:02,907 INFO L225 Difference]: With dead ends: 44821 [2022-07-22 19:37:02,907 INFO L226 Difference]: Without dead ends: 24655 [2022-07-22 19:37:02,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:37:02,948 INFO L413 NwaCegarLoop]: 4149 mSDtfsCounter, 4087 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4087 SdHoareTripleChecker+Valid, 4183 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 19:37:02,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4087 Valid, 4183 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 19:37:02,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24655 states. [2022-07-22 19:37:03,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24655 to 24655. [2022-07-22 19:37:03,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24655 states, 21180 states have (on average 1.4241265344664777) internal successors, (30163), 21412 states have internal predecessors, (30163), 1925 states have call successors, (1925), 1357 states have call predecessors, (1925), 1548 states have return successors, (3106), 1917 states have call predecessors, (3106), 1923 states have call successors, (3106) [2022-07-22 19:37:03,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24655 states to 24655 states and 35194 transitions. [2022-07-22 19:37:03,750 INFO L78 Accepts]: Start accepts. Automaton has 24655 states and 35194 transitions. Word has length 160 [2022-07-22 19:37:03,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:37:03,751 INFO L495 AbstractCegarLoop]: Abstraction has 24655 states and 35194 transitions. [2022-07-22 19:37:03,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-22 19:37:03,751 INFO L276 IsEmpty]: Start isEmpty. Operand 24655 states and 35194 transitions. [2022-07-22 19:37:03,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-22 19:37:03,797 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:37:03,797 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:37:03,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 19:37:04,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 19:37:04,015 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:37:04,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:37:04,015 INFO L85 PathProgramCache]: Analyzing trace with hash 228383827, now seen corresponding path program 1 times [2022-07-22 19:37:04,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:37:04,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485286419] [2022-07-22 19:37:04,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:37:04,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:37:04,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:04,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:37:04,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:04,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 19:37:04,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:04,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 19:37:04,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:04,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:37:04,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:04,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 19:37:04,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:04,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 19:37:04,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:04,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 19:37:04,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:04,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 19:37:04,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:04,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-22 19:37:04,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:04,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 19:37:04,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:04,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-22 19:37:04,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:04,093 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-07-22 19:37:04,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:37:04,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485286419] [2022-07-22 19:37:04,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485286419] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 19:37:04,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369651137] [2022-07-22 19:37:04,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:37:04,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 19:37:04,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 19:37:04,095 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 19:37:04,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 19:37:04,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:04,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 19:37:04,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 19:37:04,222 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-22 19:37:04,222 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 19:37:04,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369651137] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:37:04,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 19:37:04,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-22 19:37:04,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627407961] [2022-07-22 19:37:04,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:37:04,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 19:37:04,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:37:04,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 19:37:04,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:37:04,225 INFO L87 Difference]: Start difference. First operand 24655 states and 35194 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-22 19:37:04,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:37:04,938 INFO L93 Difference]: Finished difference Result 41688 states and 58732 transitions. [2022-07-22 19:37:04,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 19:37:04,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 160 [2022-07-22 19:37:04,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:37:05,014 INFO L225 Difference]: With dead ends: 41688 [2022-07-22 19:37:05,014 INFO L226 Difference]: Without dead ends: 26195 [2022-07-22 19:37:05,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:37:05,049 INFO L413 NwaCegarLoop]: 4171 mSDtfsCounter, 4088 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4088 SdHoareTripleChecker+Valid, 4349 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 19:37:05,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4088 Valid, 4349 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 19:37:05,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26195 states. [2022-07-22 19:37:06,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26195 to 26055. [2022-07-22 19:37:06,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26055 states, 22468 states have (on average 1.3989229125867901) internal successors, (31431), 22700 states have internal predecessors, (31431), 1945 states have call successors, (1945), 1449 states have call predecessors, (1945), 1640 states have return successors, (3218), 1937 states have call predecessors, (3218), 1943 states have call successors, (3218) [2022-07-22 19:37:06,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26055 states to 26055 states and 36594 transitions. [2022-07-22 19:37:06,223 INFO L78 Accepts]: Start accepts. Automaton has 26055 states and 36594 transitions. Word has length 160 [2022-07-22 19:37:06,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:37:06,224 INFO L495 AbstractCegarLoop]: Abstraction has 26055 states and 36594 transitions. [2022-07-22 19:37:06,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-22 19:37:06,224 INFO L276 IsEmpty]: Start isEmpty. Operand 26055 states and 36594 transitions. [2022-07-22 19:37:06,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-22 19:37:06,256 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:37:06,256 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:37:06,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 19:37:06,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-22 19:37:06,473 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:37:06,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:37:06,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1570525413, now seen corresponding path program 1 times [2022-07-22 19:37:06,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:37:06,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446224933] [2022-07-22 19:37:06,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:37:06,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:37:06,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:06,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:37:06,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:06,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 19:37:06,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:06,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 19:37:06,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:06,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:37:06,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:06,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 19:37:06,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:06,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 19:37:06,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:06,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 19:37:06,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:06,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 19:37:06,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:06,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-22 19:37:06,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:06,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 19:37:06,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:06,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-22 19:37:06,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:06,551 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-07-22 19:37:06,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:37:06,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446224933] [2022-07-22 19:37:06,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446224933] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 19:37:06,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765690830] [2022-07-22 19:37:06,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:37:06,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 19:37:06,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 19:37:06,553 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 19:37:06,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 19:37:06,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:06,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 19:37:06,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 19:37:06,666 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-22 19:37:06,666 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 19:37:06,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765690830] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:37:06,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 19:37:06,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-22 19:37:06,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635770214] [2022-07-22 19:37:06,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:37:06,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 19:37:06,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:37:06,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 19:37:06,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:37:06,669 INFO L87 Difference]: Start difference. First operand 26055 states and 36594 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 19:37:07,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:37:07,939 INFO L93 Difference]: Finished difference Result 72665 states and 101108 transitions. [2022-07-22 19:37:07,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 19:37:07,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 161 [2022-07-22 19:37:07,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:37:08,057 INFO L225 Difference]: With dead ends: 72665 [2022-07-22 19:37:08,058 INFO L226 Difference]: Without dead ends: 48749 [2022-07-22 19:37:08,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:37:08,098 INFO L413 NwaCegarLoop]: 4320 mSDtfsCounter, 163 mSDsluCounter, 4147 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 8467 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 19:37:08,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 8467 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 19:37:08,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48749 states. [2022-07-22 19:37:09,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48749 to 48705. [2022-07-22 19:37:09,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48705 states, 41704 states have (on average 1.3657442931133703) internal successors, (56957), 42166 states have internal predecessors, (56957), 3775 states have call successors, (3775), 2841 states have call predecessors, (3775), 3224 states have return successors, (7134), 3761 states have call predecessors, (7134), 3773 states have call successors, (7134) [2022-07-22 19:37:09,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48705 states to 48705 states and 67866 transitions. [2022-07-22 19:37:09,985 INFO L78 Accepts]: Start accepts. Automaton has 48705 states and 67866 transitions. Word has length 161 [2022-07-22 19:37:09,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:37:09,986 INFO L495 AbstractCegarLoop]: Abstraction has 48705 states and 67866 transitions. [2022-07-22 19:37:09,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 19:37:09,986 INFO L276 IsEmpty]: Start isEmpty. Operand 48705 states and 67866 transitions. [2022-07-22 19:37:10,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-22 19:37:10,186 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:37:10,186 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:37:10,203 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-22 19:37:10,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 19:37:10,387 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:37:10,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:37:10,387 INFO L85 PathProgramCache]: Analyzing trace with hash -948353227, now seen corresponding path program 1 times [2022-07-22 19:37:10,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:37:10,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071904924] [2022-07-22 19:37:10,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:37:10,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:37:10,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:10,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:37:10,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:10,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 19:37:10,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:10,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 19:37:10,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:10,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:37:10,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:10,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 19:37:10,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:10,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 19:37:10,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:10,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 19:37:10,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:10,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 19:37:10,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:10,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-22 19:37:10,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:10,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 19:37:10,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:10,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-22 19:37:10,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:10,488 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-07-22 19:37:10,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:37:10,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071904924] [2022-07-22 19:37:10,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071904924] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 19:37:10,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479402747] [2022-07-22 19:37:10,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:37:10,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 19:37:10,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 19:37:10,490 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 19:37:10,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-22 19:37:10,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:10,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 19:37:10,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 19:37:10,665 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-22 19:37:10,665 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 19:37:10,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479402747] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:37:10,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 19:37:10,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-22 19:37:10,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119468198] [2022-07-22 19:37:10,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:37:10,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 19:37:10,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:37:10,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 19:37:10,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:37:10,667 INFO L87 Difference]: Start difference. First operand 48705 states and 67866 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-22 19:37:12,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:37:12,060 INFO L93 Difference]: Finished difference Result 79069 states and 111521 transitions. [2022-07-22 19:37:12,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 19:37:12,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 161 [2022-07-22 19:37:12,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:37:12,163 INFO L225 Difference]: With dead ends: 79069 [2022-07-22 19:37:12,163 INFO L226 Difference]: Without dead ends: 41521 [2022-07-22 19:37:12,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:37:12,216 INFO L413 NwaCegarLoop]: 4148 mSDtfsCounter, 4082 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4082 SdHoareTripleChecker+Valid, 4181 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 19:37:12,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4082 Valid, 4181 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 19:37:12,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41521 states. [2022-07-22 19:37:13,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41521 to 30305. [2022-07-22 19:37:13,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30305 states, 26128 states have (on average 1.3429654011022658) internal successors, (35089), 26370 states have internal predecessors, (35089), 2255 states have call successors, (2255), 1729 states have call predecessors, (2255), 1920 states have return successors, (3778), 2237 states have call predecessors, (3778), 2253 states have call successors, (3778) [2022-07-22 19:37:13,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30305 states to 30305 states and 41122 transitions. [2022-07-22 19:37:13,650 INFO L78 Accepts]: Start accepts. Automaton has 30305 states and 41122 transitions. Word has length 161 [2022-07-22 19:37:13,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:37:13,651 INFO L495 AbstractCegarLoop]: Abstraction has 30305 states and 41122 transitions. [2022-07-22 19:37:13,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-22 19:37:13,651 INFO L276 IsEmpty]: Start isEmpty. Operand 30305 states and 41122 transitions. [2022-07-22 19:37:13,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-22 19:37:13,687 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:37:13,688 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:37:13,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-22 19:37:13,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 19:37:13,906 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:37:13,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:37:13,907 INFO L85 PathProgramCache]: Analyzing trace with hash -192882952, now seen corresponding path program 1 times [2022-07-22 19:37:13,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:37:13,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237793750] [2022-07-22 19:37:13,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:37:13,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:37:13,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:13,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:37:13,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:13,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 19:37:13,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:13,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 19:37:13,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:13,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:37:13,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:13,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 19:37:13,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:13,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 19:37:13,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:13,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 19:37:13,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:13,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 19:37:13,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:13,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-22 19:37:13,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:13,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 19:37:13,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:13,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-22 19:37:13,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:14,000 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-07-22 19:37:14,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:37:14,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237793750] [2022-07-22 19:37:14,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237793750] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 19:37:14,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622881785] [2022-07-22 19:37:14,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:37:14,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 19:37:14,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 19:37:14,002 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 19:37:14,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-22 19:37:14,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:14,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 19:37:14,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 19:37:14,139 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-22 19:37:14,139 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 19:37:14,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622881785] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:37:14,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 19:37:14,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-22 19:37:14,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867215464] [2022-07-22 19:37:14,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:37:14,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 19:37:14,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:37:14,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 19:37:14,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:37:14,141 INFO L87 Difference]: Start difference. First operand 30305 states and 41122 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 19:37:15,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:37:15,945 INFO L93 Difference]: Finished difference Result 82213 states and 110894 transitions. [2022-07-22 19:37:15,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 19:37:15,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 161 [2022-07-22 19:37:15,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:37:16,119 INFO L225 Difference]: With dead ends: 82213 [2022-07-22 19:37:16,119 INFO L226 Difference]: Without dead ends: 54057 [2022-07-22 19:37:16,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:37:16,160 INFO L413 NwaCegarLoop]: 4314 mSDtfsCounter, 150 mSDsluCounter, 4144 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 8458 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 19:37:16,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 8458 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 19:37:16,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54057 states. [2022-07-22 19:37:18,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54057 to 54053. [2022-07-22 19:37:18,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54053 states, 46184 states have (on average 1.3125974363415902) internal successors, (60621), 46666 states have internal predecessors, (60621), 4267 states have call successors, (4267), 3217 states have call predecessors, (4267), 3600 states have return successors, (8200), 4233 states have call predecessors, (8200), 4265 states have call successors, (8200) [2022-07-22 19:37:18,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54053 states to 54053 states and 73088 transitions. [2022-07-22 19:37:18,521 INFO L78 Accepts]: Start accepts. Automaton has 54053 states and 73088 transitions. Word has length 161 [2022-07-22 19:37:18,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:37:18,521 INFO L495 AbstractCegarLoop]: Abstraction has 54053 states and 73088 transitions. [2022-07-22 19:37:18,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 19:37:18,522 INFO L276 IsEmpty]: Start isEmpty. Operand 54053 states and 73088 transitions. [2022-07-22 19:37:18,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-22 19:37:18,581 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:37:18,581 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:37:18,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-22 19:37:18,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-22 19:37:18,801 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:37:18,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:37:18,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1491732838, now seen corresponding path program 1 times [2022-07-22 19:37:18,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:37:18,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151124985] [2022-07-22 19:37:18,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:37:18,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:37:18,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:18,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:37:18,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:18,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 19:37:18,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:18,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 19:37:18,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:18,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:37:18,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:18,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 19:37:18,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:18,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 19:37:18,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:18,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 19:37:18,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:18,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 19:37:18,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:18,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-22 19:37:18,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:18,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 19:37:18,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:18,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-22 19:37:18,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:18,899 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-22 19:37:18,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:37:18,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151124985] [2022-07-22 19:37:18,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151124985] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 19:37:18,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956063554] [2022-07-22 19:37:18,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:37:18,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 19:37:18,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 19:37:18,901 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 19:37:18,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-22 19:37:18,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:18,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 19:37:18,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 19:37:19,020 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-22 19:37:19,020 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 19:37:19,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956063554] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:37:19,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 19:37:19,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-22 19:37:19,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672484556] [2022-07-22 19:37:19,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:37:19,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 19:37:19,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:37:19,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 19:37:19,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:37:19,021 INFO L87 Difference]: Start difference. First operand 54053 states and 73088 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-22 19:37:21,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:37:21,178 INFO L93 Difference]: Finished difference Result 95015 states and 127828 transitions. [2022-07-22 19:37:21,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 19:37:21,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 161 [2022-07-22 19:37:21,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:37:21,327 INFO L225 Difference]: With dead ends: 95015 [2022-07-22 19:37:21,327 INFO L226 Difference]: Without dead ends: 54897 [2022-07-22 19:37:21,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:37:21,395 INFO L413 NwaCegarLoop]: 4186 mSDtfsCounter, 4108 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4108 SdHoareTripleChecker+Valid, 4357 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 19:37:21,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4108 Valid, 4357 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 19:37:21,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54897 states. [2022-07-22 19:37:23,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54897 to 54053. [2022-07-22 19:37:23,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54053 states, 46184 states have (on average 1.3048025290143772) internal successors, (60261), 46666 states have internal predecessors, (60261), 4267 states have call successors, (4267), 3217 states have call predecessors, (4267), 3600 states have return successors, (8200), 4233 states have call predecessors, (8200), 4265 states have call successors, (8200) [2022-07-22 19:37:23,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54053 states to 54053 states and 72728 transitions. [2022-07-22 19:37:23,661 INFO L78 Accepts]: Start accepts. Automaton has 54053 states and 72728 transitions. Word has length 161 [2022-07-22 19:37:23,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:37:23,661 INFO L495 AbstractCegarLoop]: Abstraction has 54053 states and 72728 transitions. [2022-07-22 19:37:23,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-22 19:37:23,662 INFO L276 IsEmpty]: Start isEmpty. Operand 54053 states and 72728 transitions. [2022-07-22 19:37:23,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-22 19:37:23,717 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:37:23,718 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:37:23,734 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-07-22 19:37:23,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-22 19:37:23,924 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:37:23,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:37:23,934 INFO L85 PathProgramCache]: Analyzing trace with hash -251057197, now seen corresponding path program 1 times [2022-07-22 19:37:23,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:37:23,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975700375] [2022-07-22 19:37:23,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:37:23,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:37:23,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:23,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:37:23,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:23,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 19:37:23,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:23,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 19:37:24,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:24,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:37:24,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:24,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 19:37:24,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:24,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 19:37:24,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:24,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 19:37:24,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:24,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 19:37:24,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:24,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-22 19:37:24,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:24,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 19:37:24,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:24,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-22 19:37:24,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:24,035 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-07-22 19:37:24,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:37:24,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975700375] [2022-07-22 19:37:24,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975700375] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 19:37:24,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601217681] [2022-07-22 19:37:24,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:37:24,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 19:37:24,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 19:37:24,037 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 19:37:24,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-22 19:37:24,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:24,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 19:37:24,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 19:37:24,150 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-22 19:37:24,151 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 19:37:24,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601217681] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:37:24,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 19:37:24,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-22 19:37:24,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684623569] [2022-07-22 19:37:24,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:37:24,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 19:37:24,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:37:24,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 19:37:24,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:37:24,152 INFO L87 Difference]: Start difference. First operand 54053 states and 72728 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-22 19:37:26,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:37:26,212 INFO L93 Difference]: Finished difference Result 94725 states and 126938 transitions. [2022-07-22 19:37:26,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 19:37:26,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 161 [2022-07-22 19:37:26,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:37:26,365 INFO L225 Difference]: With dead ends: 94725 [2022-07-22 19:37:26,365 INFO L226 Difference]: Without dead ends: 55449 [2022-07-22 19:37:26,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:37:26,424 INFO L413 NwaCegarLoop]: 4200 mSDtfsCounter, 4107 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4107 SdHoareTripleChecker+Valid, 4373 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 19:37:26,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4107 Valid, 4373 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 19:37:26,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55449 states. [2022-07-22 19:37:28,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55449 to 53933. [2022-07-22 19:37:28,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53933 states, 46064 states have (on average 1.2977813476901703) internal successors, (59781), 46546 states have internal predecessors, (59781), 4267 states have call successors, (4267), 3217 states have call predecessors, (4267), 3600 states have return successors, (8200), 4233 states have call predecessors, (8200), 4265 states have call successors, (8200) [2022-07-22 19:37:28,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53933 states to 53933 states and 72248 transitions. [2022-07-22 19:37:28,808 INFO L78 Accepts]: Start accepts. Automaton has 53933 states and 72248 transitions. Word has length 161 [2022-07-22 19:37:28,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:37:28,808 INFO L495 AbstractCegarLoop]: Abstraction has 53933 states and 72248 transitions. [2022-07-22 19:37:28,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-22 19:37:28,809 INFO L276 IsEmpty]: Start isEmpty. Operand 53933 states and 72248 transitions. [2022-07-22 19:37:28,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-22 19:37:28,862 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:37:28,862 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:37:28,878 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-07-22 19:37:29,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-22 19:37:29,079 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:37:29,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:37:29,079 INFO L85 PathProgramCache]: Analyzing trace with hash -2084105626, now seen corresponding path program 1 times [2022-07-22 19:37:29,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:37:29,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193077913] [2022-07-22 19:37:29,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:37:29,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:37:29,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:29,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:37:29,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:29,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 19:37:29,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:29,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 19:37:29,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:29,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:37:29,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:29,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 19:37:29,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:29,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 19:37:29,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:29,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 19:37:29,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:29,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 19:37:29,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:29,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-22 19:37:29,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:29,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 19:37:29,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:29,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-22 19:37:29,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:37:29,125 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-07-22 19:37:29,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:37:29,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193077913] [2022-07-22 19:37:29,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193077913] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:37:29,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:37:29,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 19:37:29,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601938482] [2022-07-22 19:37:29,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:37:29,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 19:37:29,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:37:29,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 19:37:29,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 19:37:29,127 INFO L87 Difference]: Start difference. First operand 53933 states and 72248 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8)