./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label49+token_ring.07.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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_label49+token_ring.07.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 a0d6ced7e0ff387d58cf8725410ee88dbee5b176eb503e82e37c165076b7e65d --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 07:07:20,445 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 07:07:20,447 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 07:07:20,481 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 07:07:20,481 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 07:07:20,482 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 07:07:20,486 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 07:07:20,488 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 07:07:20,490 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 07:07:20,494 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 07:07:20,495 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 07:07:20,499 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 07:07:20,499 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 07:07:20,501 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 07:07:20,502 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 07:07:20,504 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 07:07:20,505 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 07:07:20,506 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 07:07:20,507 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 07:07:20,512 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 07:07:20,513 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 07:07:20,514 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 07:07:20,515 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 07:07:20,516 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 07:07:20,517 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 07:07:20,522 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 07:07:20,523 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 07:07:20,523 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 07:07:20,524 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 07:07:20,524 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 07:07:20,525 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 07:07:20,525 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 07:07:20,526 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 07:07:20,527 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 07:07:20,528 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 07:07:20,528 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 07:07:20,528 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 07:07:20,530 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 07:07:20,530 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 07:07:20,530 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 07:07:20,531 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 07:07:20,532 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 07:07:20,536 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 07:07:20,561 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 07:07:20,562 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 07:07:20,562 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 07:07:20,562 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 07:07:20,563 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 07:07:20,563 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 07:07:20,563 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 07:07:20,564 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 07:07:20,564 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 07:07:20,564 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 07:07:20,564 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 07:07:20,565 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 07:07:20,565 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 07:07:20,565 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 07:07:20,570 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 07:07:20,570 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 07:07:20,570 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 07:07:20,570 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 07:07:20,571 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 07:07:20,571 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 07:07:20,571 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 07:07:20,571 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 07:07:20,571 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 07:07:20,571 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 07:07:20,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 07:07:20,572 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 07:07:20,572 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 07:07:20,572 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 07:07:20,572 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 07:07:20,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 07:07:20,573 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 07:07:20,573 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 07:07:20,573 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 07:07:20,573 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0d6ced7e0ff387d58cf8725410ee88dbee5b176eb503e82e37c165076b7e65d [2022-07-21 07:07:20,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 07:07:20,929 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 07:07:20,930 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 07:07:20,931 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 07:07:20,932 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 07:07:20,933 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label49+token_ring.07.cil-2.c [2022-07-21 07:07:21,025 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd7d7db52/618319e0d74b4333af65703766810c6c/FLAGa27ef7995 [2022-07-21 07:07:21,831 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 07:07:21,831 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.07.cil-2.c [2022-07-21 07:07:21,865 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd7d7db52/618319e0d74b4333af65703766810c6c/FLAGa27ef7995 [2022-07-21 07:07:22,022 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd7d7db52/618319e0d74b4333af65703766810c6c [2022-07-21 07:07:22,024 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 07:07:22,025 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 07:07:22,027 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 07:07:22,027 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 07:07:22,029 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 07:07:22,030 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:07:22" (1/1) ... [2022-07-21 07:07:22,030 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a2694d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:07:22, skipping insertion in model container [2022-07-21 07:07:22,031 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:07:22" (1/1) ... [2022-07-21 07:07:22,036 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 07:07:22,207 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 07:07:23,345 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_label49+token_ring.07.cil-2.c[380593,380606] [2022-07-21 07:07:23,367 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_label49+token_ring.07.cil-2.c[383339,383352] [2022-07-21 07:07:23,557 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 07:07:23,564 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 07:07:24,358 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_label49+token_ring.07.cil-2.c[380593,380606] [2022-07-21 07:07:24,362 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_label49+token_ring.07.cil-2.c[383339,383352] [2022-07-21 07:07:24,382 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 07:07:24,423 INFO L208 MainTranslator]: Completed translation [2022-07-21 07:07:24,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:07:24 WrapperNode [2022-07-21 07:07:24,424 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 07:07:24,425 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 07:07:24,425 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 07:07:24,425 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 07:07:24,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:07:24" (1/1) ... [2022-07-21 07:07:24,505 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:07:24" (1/1) ... [2022-07-21 07:07:24,818 INFO L137 Inliner]: procedures = 58, calls = 63, calls flagged for inlining = 35, calls inlined = 35, statements flattened = 12914 [2022-07-21 07:07:24,819 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 07:07:24,820 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 07:07:24,820 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 07:07:24,820 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 07:07:24,826 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:07:24" (1/1) ... [2022-07-21 07:07:24,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:07:24" (1/1) ... [2022-07-21 07:07:24,864 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:07:24" (1/1) ... [2022-07-21 07:07:24,864 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:07:24" (1/1) ... [2022-07-21 07:07:25,034 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:07:24" (1/1) ... [2022-07-21 07:07:25,059 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:07:24" (1/1) ... [2022-07-21 07:07:25,168 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:07:24" (1/1) ... [2022-07-21 07:07:25,253 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 07:07:25,254 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 07:07:25,254 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 07:07:25,255 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 07:07:25,257 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:07:24" (1/1) ... [2022-07-21 07:07:25,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 07:07:25,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 07:07:25,345 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) [2022-07-21 07:07:25,416 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 [2022-07-21 07:07:25,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 07:07:25,451 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-21 07:07:25,451 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-21 07:07:25,451 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-21 07:07:25,451 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-21 07:07:25,451 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-21 07:07:25,451 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-21 07:07:25,451 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-07-21 07:07:25,451 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-07-21 07:07:25,451 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-21 07:07:25,451 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-21 07:07:25,451 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-21 07:07:25,452 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-21 07:07:25,452 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-21 07:07:25,452 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-21 07:07:25,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 07:07:25,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 07:07:25,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 07:07:25,556 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 07:07:25,558 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 07:07:30,303 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 07:07:30,319 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 07:07:30,319 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2022-07-21 07:07:30,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:07:30 BoogieIcfgContainer [2022-07-21 07:07:30,322 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 07:07:30,324 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 07:07:30,324 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 07:07:30,326 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 07:07:30,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 07:07:22" (1/3) ... [2022-07-21 07:07:30,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4269a8dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:07:30, skipping insertion in model container [2022-07-21 07:07:30,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:07:24" (2/3) ... [2022-07-21 07:07:30,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4269a8dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:07:30, skipping insertion in model container [2022-07-21 07:07:30,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:07:30" (3/3) ... [2022-07-21 07:07:30,328 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.07.cil-2.c [2022-07-21 07:07:30,336 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 07:07:30,336 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-21 07:07:30,389 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 07:07:30,394 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@4f20c84a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@75c6fb80 [2022-07-21 07:07:30,394 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-21 07:07:30,402 INFO L276 IsEmpty]: Start isEmpty. Operand has 2448 states, 2415 states have (on average 1.850103519668737) internal successors, (4468), 2420 states have internal predecessors, (4468), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2022-07-21 07:07:30,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-21 07:07:30,413 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:07:30,414 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:07:30,414 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:07:30,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:07:30,418 INFO L85 PathProgramCache]: Analyzing trace with hash -818812197, now seen corresponding path program 1 times [2022-07-21 07:07:30,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:07:30,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881867440] [2022-07-21 07:07:30,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:07:30,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:07:30,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:30,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 07:07:30,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:30,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 07:07:30,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:30,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 07:07:30,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:30,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 07:07:30,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:30,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 07:07:30,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:30,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:07:30,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:07:30,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881867440] [2022-07-21 07:07:30,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881867440] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:07:30,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:07:30,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 07:07:30,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433890998] [2022-07-21 07:07:30,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:07:30,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 07:07:30,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:07:30,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 07:07:30,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 07:07:30,688 INFO L87 Difference]: Start difference. First operand has 2448 states, 2415 states have (on average 1.850103519668737) internal successors, (4468), 2420 states have internal predecessors, (4468), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 07:07:31,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:07:31,427 INFO L93 Difference]: Finished difference Result 4970 states and 9155 transitions. [2022-07-21 07:07:31,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 07:07:31,429 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-07-21 07:07:31,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:07:31,445 INFO L225 Difference]: With dead ends: 4970 [2022-07-21 07:07:31,446 INFO L226 Difference]: Without dead ends: 2467 [2022-07-21 07:07:31,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 07:07:31,454 INFO L413 NwaCegarLoop]: 4465 mSDtfsCounter, 667 mSDsluCounter, 12353 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 16818 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 07:07:31,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [686 Valid, 16818 Invalid, 512 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [54 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 07:07:31,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2467 states. [2022-07-21 07:07:31,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2467 to 2380. [2022-07-21 07:07:31,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2380 states, 2349 states have (on average 1.8369518944231589) internal successors, (4315), 2352 states have internal predecessors, (4315), 23 states have call successors, (23), 7 states have call predecessors, (23), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-07-21 07:07:31,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2380 states to 2380 states and 4359 transitions. [2022-07-21 07:07:31,541 INFO L78 Accepts]: Start accepts. Automaton has 2380 states and 4359 transitions. Word has length 124 [2022-07-21 07:07:31,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:07:31,541 INFO L495 AbstractCegarLoop]: Abstraction has 2380 states and 4359 transitions. [2022-07-21 07:07:31,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 07:07:31,542 INFO L276 IsEmpty]: Start isEmpty. Operand 2380 states and 4359 transitions. [2022-07-21 07:07:31,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-21 07:07:31,544 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:07:31,545 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:07:31,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 07:07:31,545 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:07:31,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:07:31,546 INFO L85 PathProgramCache]: Analyzing trace with hash 219772377, now seen corresponding path program 1 times [2022-07-21 07:07:31,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:07:31,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827805042] [2022-07-21 07:07:31,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:07:31,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:07:31,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:31,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 07:07:31,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:31,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 07:07:31,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:31,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 07:07:31,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:31,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 07:07:31,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:31,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 07:07:31,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:31,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:07:31,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:07:31,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827805042] [2022-07-21 07:07:31,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827805042] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:07:31,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:07:31,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 07:07:31,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125042156] [2022-07-21 07:07:31,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:07:31,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 07:07:31,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:07:31,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 07:07:31,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 07:07:31,675 INFO L87 Difference]: Start difference. First operand 2380 states and 4359 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 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) [2022-07-21 07:07:33,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:07:33,138 INFO L93 Difference]: Finished difference Result 3050 states and 5430 transitions. [2022-07-21 07:07:33,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 07:07:33,139 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 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 124 [2022-07-21 07:07:33,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:07:33,148 INFO L225 Difference]: With dead ends: 3050 [2022-07-21 07:07:33,149 INFO L226 Difference]: Without dead ends: 2806 [2022-07-21 07:07:33,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-21 07:07:33,151 INFO L413 NwaCegarLoop]: 4428 mSDtfsCounter, 4951 mSDsluCounter, 12541 mSDsCounter, 0 mSdLazyCounter, 1289 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4965 SdHoareTripleChecker+Valid, 16969 SdHoareTripleChecker+Invalid, 1393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-21 07:07:33,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4965 Valid, 16969 Invalid, 1393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1289 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-21 07:07:33,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2806 states. [2022-07-21 07:07:33,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2806 to 2631. [2022-07-21 07:07:33,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2631 states, 2577 states have (on average 1.8145129996119518) internal successors, (4676), 2581 states have internal predecessors, (4676), 39 states have call successors, (39), 13 states have call predecessors, (39), 13 states have return successors, (40), 37 states have call predecessors, (40), 37 states have call successors, (40) [2022-07-21 07:07:33,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2631 states to 2631 states and 4755 transitions. [2022-07-21 07:07:33,208 INFO L78 Accepts]: Start accepts. Automaton has 2631 states and 4755 transitions. Word has length 124 [2022-07-21 07:07:33,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:07:33,209 INFO L495 AbstractCegarLoop]: Abstraction has 2631 states and 4755 transitions. [2022-07-21 07:07:33,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 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) [2022-07-21 07:07:33,209 INFO L276 IsEmpty]: Start isEmpty. Operand 2631 states and 4755 transitions. [2022-07-21 07:07:33,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-21 07:07:33,211 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:07:33,211 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:07:33,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 07:07:33,212 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:07:33,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:07:33,212 INFO L85 PathProgramCache]: Analyzing trace with hash -797876011, now seen corresponding path program 1 times [2022-07-21 07:07:33,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:07:33,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339435835] [2022-07-21 07:07:33,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:07:33,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:07:33,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:33,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 07:07:33,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:33,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 07:07:33,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:33,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 07:07:33,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:33,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 07:07:33,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:33,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 07:07:33,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:33,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:07:33,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:07:33,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339435835] [2022-07-21 07:07:33,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339435835] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:07:33,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:07:33,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 07:07:33,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438169082] [2022-07-21 07:07:33,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:07:33,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 07:07:33,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:07:33,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 07:07:33,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 07:07:33,336 INFO L87 Difference]: Start difference. First operand 2631 states and 4755 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-07-21 07:07:35,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:07:35,013 INFO L93 Difference]: Finished difference Result 3648 states and 6379 transitions. [2022-07-21 07:07:35,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 07:07:35,014 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-07-21 07:07:35,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:07:35,031 INFO L225 Difference]: With dead ends: 3648 [2022-07-21 07:07:35,031 INFO L226 Difference]: Without dead ends: 3153 [2022-07-21 07:07:35,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 07:07:35,043 INFO L413 NwaCegarLoop]: 4631 mSDtfsCounter, 4958 mSDsluCounter, 17147 mSDsCounter, 0 mSdLazyCounter, 2010 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4972 SdHoareTripleChecker+Valid, 21778 SdHoareTripleChecker+Invalid, 2079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 2010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-21 07:07:35,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4972 Valid, 21778 Invalid, 2079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 2010 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-21 07:07:35,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3153 states. [2022-07-21 07:07:35,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3153 to 2865. [2022-07-21 07:07:35,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2865 states, 2788 states have (on average 1.7944763271162123) internal successors, (5003), 2793 states have internal predecessors, (5003), 55 states have call successors, (55), 19 states have call predecessors, (55), 20 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2022-07-21 07:07:35,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2865 states to 2865 states and 5116 transitions. [2022-07-21 07:07:35,138 INFO L78 Accepts]: Start accepts. Automaton has 2865 states and 5116 transitions. Word has length 124 [2022-07-21 07:07:35,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:07:35,139 INFO L495 AbstractCegarLoop]: Abstraction has 2865 states and 5116 transitions. [2022-07-21 07:07:35,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-07-21 07:07:35,139 INFO L276 IsEmpty]: Start isEmpty. Operand 2865 states and 5116 transitions. [2022-07-21 07:07:35,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-21 07:07:35,141 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:07:35,141 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:07:35,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 07:07:35,141 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:07:35,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:07:35,142 INFO L85 PathProgramCache]: Analyzing trace with hash -679434537, now seen corresponding path program 1 times [2022-07-21 07:07:35,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:07:35,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409899910] [2022-07-21 07:07:35,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:07:35,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:07:35,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:35,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 07:07:35,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:35,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 07:07:35,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:35,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 07:07:35,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:35,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 07:07:35,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:35,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 07:07:35,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:35,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:07:35,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:07:35,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409899910] [2022-07-21 07:07:35,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409899910] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:07:35,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:07:35,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 07:07:35,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632281511] [2022-07-21 07:07:35,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:07:35,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 07:07:35,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:07:35,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 07:07:35,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 07:07:35,310 INFO L87 Difference]: Start difference. First operand 2865 states and 5116 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-07-21 07:07:37,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:07:37,046 INFO L93 Difference]: Finished difference Result 4529 states and 7768 transitions. [2022-07-21 07:07:37,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 07:07:37,046 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-07-21 07:07:37,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:07:37,060 INFO L225 Difference]: With dead ends: 4529 [2022-07-21 07:07:37,060 INFO L226 Difference]: Without dead ends: 3800 [2022-07-21 07:07:37,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 07:07:37,065 INFO L413 NwaCegarLoop]: 4623 mSDtfsCounter, 4955 mSDsluCounter, 17147 mSDsCounter, 0 mSdLazyCounter, 2012 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4969 SdHoareTripleChecker+Valid, 21770 SdHoareTripleChecker+Invalid, 2084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 2012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-21 07:07:37,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4969 Valid, 21770 Invalid, 2084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 2012 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-21 07:07:37,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3800 states. [2022-07-21 07:07:37,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3800 to 3334. [2022-07-21 07:07:37,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3334 states, 3211 states have (on average 1.7620678916225474) internal successors, (5658), 3218 states have internal predecessors, (5658), 87 states have call successors, (87), 31 states have call predecessors, (87), 34 states have return successors, (98), 88 states have call predecessors, (98), 85 states have call successors, (98) [2022-07-21 07:07:37,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3334 states to 3334 states and 5843 transitions. [2022-07-21 07:07:37,170 INFO L78 Accepts]: Start accepts. Automaton has 3334 states and 5843 transitions. Word has length 124 [2022-07-21 07:07:37,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:07:37,170 INFO L495 AbstractCegarLoop]: Abstraction has 3334 states and 5843 transitions. [2022-07-21 07:07:37,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-07-21 07:07:37,171 INFO L276 IsEmpty]: Start isEmpty. Operand 3334 states and 5843 transitions. [2022-07-21 07:07:37,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-21 07:07:37,172 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:07:37,172 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:07:37,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 07:07:37,173 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:07:37,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:07:37,173 INFO L85 PathProgramCache]: Analyzing trace with hash 709859477, now seen corresponding path program 1 times [2022-07-21 07:07:37,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:07:37,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741635910] [2022-07-21 07:07:37,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:07:37,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:07:37,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:37,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 07:07:37,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:37,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 07:07:37,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:37,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 07:07:37,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:37,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 07:07:37,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:37,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 07:07:37,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:37,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:07:37,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:07:37,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741635910] [2022-07-21 07:07:37,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741635910] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:07:37,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:07:37,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 07:07:37,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310524615] [2022-07-21 07:07:37,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:07:37,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 07:07:37,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:07:37,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 07:07:37,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 07:07:37,264 INFO L87 Difference]: Start difference. First operand 3334 states and 5843 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-07-21 07:07:39,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:07:39,211 INFO L93 Difference]: Finished difference Result 6226 states and 10431 transitions. [2022-07-21 07:07:39,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 07:07:39,211 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-07-21 07:07:39,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:07:39,228 INFO L225 Difference]: With dead ends: 6226 [2022-07-21 07:07:39,229 INFO L226 Difference]: Without dead ends: 5028 [2022-07-21 07:07:39,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 07:07:39,235 INFO L413 NwaCegarLoop]: 4619 mSDtfsCounter, 4951 mSDsluCounter, 17147 mSDsCounter, 0 mSdLazyCounter, 2007 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4965 SdHoareTripleChecker+Valid, 21766 SdHoareTripleChecker+Invalid, 2079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 2007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-21 07:07:39,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4965 Valid, 21766 Invalid, 2079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 2007 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-21 07:07:39,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5028 states. [2022-07-21 07:07:39,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5028 to 4273. [2022-07-21 07:07:39,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4273 states, 4058 states have (on average 1.7171020206998522) internal successors, (6968), 4069 states have internal predecessors, (6968), 151 states have call successors, (151), 55 states have call predecessors, (151), 62 states have return successors, (184), 156 states have call predecessors, (184), 149 states have call successors, (184) [2022-07-21 07:07:39,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4273 states to 4273 states and 7303 transitions. [2022-07-21 07:07:39,350 INFO L78 Accepts]: Start accepts. Automaton has 4273 states and 7303 transitions. Word has length 124 [2022-07-21 07:07:39,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:07:39,351 INFO L495 AbstractCegarLoop]: Abstraction has 4273 states and 7303 transitions. [2022-07-21 07:07:39,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-07-21 07:07:39,351 INFO L276 IsEmpty]: Start isEmpty. Operand 4273 states and 7303 transitions. [2022-07-21 07:07:39,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-21 07:07:39,353 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:07:39,353 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:07:39,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 07:07:39,354 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:07:39,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:07:39,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1323534569, now seen corresponding path program 1 times [2022-07-21 07:07:39,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:07:39,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107826040] [2022-07-21 07:07:39,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:07:39,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:07:39,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:39,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 07:07:39,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:39,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 07:07:39,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:39,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 07:07:39,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:39,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 07:07:39,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:39,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 07:07:39,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:39,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:07:39,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:07:39,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107826040] [2022-07-21 07:07:39,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107826040] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:07:39,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:07:39,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 07:07:39,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177497078] [2022-07-21 07:07:39,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:07:39,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 07:07:39,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:07:39,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 07:07:39,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 07:07:39,453 INFO L87 Difference]: Start difference. First operand 4273 states and 7303 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-07-21 07:07:41,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:07:41,193 INFO L93 Difference]: Finished difference Result 9619 states and 15773 transitions. [2022-07-21 07:07:41,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 07:07:41,193 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-07-21 07:07:41,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:07:41,216 INFO L225 Difference]: With dead ends: 9619 [2022-07-21 07:07:41,217 INFO L226 Difference]: Without dead ends: 7482 [2022-07-21 07:07:41,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 07:07:41,224 INFO L413 NwaCegarLoop]: 4615 mSDtfsCounter, 4947 mSDsluCounter, 17147 mSDsCounter, 0 mSdLazyCounter, 2002 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4961 SdHoareTripleChecker+Valid, 21762 SdHoareTripleChecker+Invalid, 2074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 2002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-21 07:07:41,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4961 Valid, 21762 Invalid, 2074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 2002 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-21 07:07:41,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7482 states. [2022-07-21 07:07:41,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7482 to 6156. [2022-07-21 07:07:41,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6156 states, 5757 states have (on average 1.6664929650859823) internal successors, (9594), 5776 states have internal predecessors, (9594), 279 states have call successors, (279), 103 states have call predecessors, (279), 118 states have return successors, (374), 292 states have call predecessors, (374), 277 states have call successors, (374) [2022-07-21 07:07:41,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6156 states to 6156 states and 10247 transitions. [2022-07-21 07:07:41,448 INFO L78 Accepts]: Start accepts. Automaton has 6156 states and 10247 transitions. Word has length 124 [2022-07-21 07:07:41,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:07:41,448 INFO L495 AbstractCegarLoop]: Abstraction has 6156 states and 10247 transitions. [2022-07-21 07:07:41,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-07-21 07:07:41,449 INFO L276 IsEmpty]: Start isEmpty. Operand 6156 states and 10247 transitions. [2022-07-21 07:07:41,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-21 07:07:41,452 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:07:41,452 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:07:41,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 07:07:41,453 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:07:41,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:07:41,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1104724053, now seen corresponding path program 1 times [2022-07-21 07:07:41,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:07:41,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961153712] [2022-07-21 07:07:41,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:07:41,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:07:41,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:41,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 07:07:41,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:41,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 07:07:41,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:41,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 07:07:41,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:41,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 07:07:41,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:41,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 07:07:41,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:41,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:07:41,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:07:41,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961153712] [2022-07-21 07:07:41,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961153712] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:07:41,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:07:41,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 07:07:41,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76528042] [2022-07-21 07:07:41,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:07:41,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 07:07:41,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:07:41,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 07:07:41,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 07:07:41,563 INFO L87 Difference]: Start difference. First operand 6156 states and 10247 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-07-21 07:07:43,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:07:43,470 INFO L93 Difference]: Finished difference Result 16404 states and 26515 transitions. [2022-07-21 07:07:43,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 07:07:43,471 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-07-21 07:07:43,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:07:43,504 INFO L225 Difference]: With dead ends: 16404 [2022-07-21 07:07:43,505 INFO L226 Difference]: Without dead ends: 12384 [2022-07-21 07:07:43,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 07:07:43,521 INFO L413 NwaCegarLoop]: 4609 mSDtfsCounter, 4946 mSDsluCounter, 17147 mSDsCounter, 0 mSdLazyCounter, 1994 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4960 SdHoareTripleChecker+Valid, 21756 SdHoareTripleChecker+Invalid, 2069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-21 07:07:43,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4960 Valid, 21756 Invalid, 2069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1994 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-21 07:07:43,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12384 states. [2022-07-21 07:07:43,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12384 to 9935. [2022-07-21 07:07:43,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9935 states, 9168 states have (on average 1.6212914485165795) internal successors, (14864), 9203 states have internal predecessors, (14864), 535 states have call successors, (535), 199 states have call predecessors, (535), 230 states have return successors, (808), 564 states have call predecessors, (808), 533 states have call successors, (808) [2022-07-21 07:07:43,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9935 states to 9935 states and 16207 transitions. [2022-07-21 07:07:43,909 INFO L78 Accepts]: Start accepts. Automaton has 9935 states and 16207 transitions. Word has length 124 [2022-07-21 07:07:43,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:07:43,909 INFO L495 AbstractCegarLoop]: Abstraction has 9935 states and 16207 transitions. [2022-07-21 07:07:43,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-07-21 07:07:43,910 INFO L276 IsEmpty]: Start isEmpty. Operand 9935 states and 16207 transitions. [2022-07-21 07:07:43,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-21 07:07:43,916 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:07:43,916 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:07:43,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 07:07:43,916 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:07:43,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:07:43,917 INFO L85 PathProgramCache]: Analyzing trace with hash -202418345, now seen corresponding path program 1 times [2022-07-21 07:07:43,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:07:43,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485858505] [2022-07-21 07:07:43,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:07:43,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:07:43,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:43,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 07:07:43,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:43,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 07:07:43,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:44,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 07:07:44,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:44,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 07:07:44,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:44,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 07:07:44,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:44,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:07:44,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:07:44,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485858505] [2022-07-21 07:07:44,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485858505] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:07:44,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:07:44,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 07:07:44,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249710273] [2022-07-21 07:07:44,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:07:44,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 07:07:44,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:07:44,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 07:07:44,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 07:07:44,032 INFO L87 Difference]: Start difference. First operand 9935 states and 16207 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-07-21 07:07:45,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:07:45,208 INFO L93 Difference]: Finished difference Result 20276 states and 32868 transitions. [2022-07-21 07:07:45,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 07:07:45,208 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-07-21 07:07:45,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:07:45,240 INFO L225 Difference]: With dead ends: 20276 [2022-07-21 07:07:45,240 INFO L226 Difference]: Without dead ends: 12477 [2022-07-21 07:07:45,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 07:07:45,264 INFO L413 NwaCegarLoop]: 4362 mSDtfsCounter, 4791 mSDsluCounter, 12383 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4806 SdHoareTripleChecker+Valid, 16745 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 07:07:45,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4806 Valid, 16745 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 07:07:45,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12477 states. [2022-07-21 07:07:45,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12477 to 9935. [2022-07-21 07:07:45,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9935 states, 9168 states have (on average 1.6176919720767888) internal successors, (14831), 9203 states have internal predecessors, (14831), 535 states have call successors, (535), 199 states have call predecessors, (535), 230 states have return successors, (808), 564 states have call predecessors, (808), 533 states have call successors, (808) [2022-07-21 07:07:45,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9935 states to 9935 states and 16174 transitions. [2022-07-21 07:07:45,637 INFO L78 Accepts]: Start accepts. Automaton has 9935 states and 16174 transitions. Word has length 124 [2022-07-21 07:07:45,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:07:45,637 INFO L495 AbstractCegarLoop]: Abstraction has 9935 states and 16174 transitions. [2022-07-21 07:07:45,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-07-21 07:07:45,638 INFO L276 IsEmpty]: Start isEmpty. Operand 9935 states and 16174 transitions. [2022-07-21 07:07:45,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-21 07:07:45,643 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:07:45,644 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:07:45,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 07:07:45,644 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:07:45,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:07:45,644 INFO L85 PathProgramCache]: Analyzing trace with hash 828622553, now seen corresponding path program 1 times [2022-07-21 07:07:45,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:07:45,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334856589] [2022-07-21 07:07:45,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:07:45,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:07:45,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:45,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 07:07:45,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:45,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 07:07:45,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:45,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 07:07:45,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:45,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 07:07:45,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:45,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 07:07:45,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:45,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:07:45,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:07:45,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334856589] [2022-07-21 07:07:45,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334856589] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:07:45,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:07:45,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 07:07:45,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473603086] [2022-07-21 07:07:45,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:07:45,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 07:07:45,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:07:45,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 07:07:45,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 07:07:45,744 INFO L87 Difference]: Start difference. First operand 9935 states and 16174 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-07-21 07:07:48,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:07:48,543 INFO L93 Difference]: Finished difference Result 33332 states and 53083 transitions. [2022-07-21 07:07:48,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 07:07:48,544 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-07-21 07:07:48,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:07:48,623 INFO L225 Difference]: With dead ends: 33332 [2022-07-21 07:07:48,624 INFO L226 Difference]: Without dead ends: 25533 [2022-07-21 07:07:48,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 07:07:48,654 INFO L413 NwaCegarLoop]: 4593 mSDtfsCounter, 5225 mSDsluCounter, 17139 mSDsCounter, 0 mSdLazyCounter, 1948 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5247 SdHoareTripleChecker+Valid, 21732 SdHoareTripleChecker+Invalid, 2029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-21 07:07:48,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5247 Valid, 21732 Invalid, 2029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1948 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-21 07:07:48,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25533 states. [2022-07-21 07:07:49,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25533 to 17492. [2022-07-21 07:07:49,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17492 states, 16021 states have (on average 1.586480244678859) internal successors, (25417), 16088 states have internal predecessors, (25417), 1015 states have call successors, (1015), 391 states have call predecessors, (1015), 454 states have return successors, (1806), 1076 states have call predecessors, (1806), 1013 states have call successors, (1806) [2022-07-21 07:07:49,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17492 states to 17492 states and 28238 transitions. [2022-07-21 07:07:49,705 INFO L78 Accepts]: Start accepts. Automaton has 17492 states and 28238 transitions. Word has length 124 [2022-07-21 07:07:49,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:07:49,706 INFO L495 AbstractCegarLoop]: Abstraction has 17492 states and 28238 transitions. [2022-07-21 07:07:49,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-07-21 07:07:49,706 INFO L276 IsEmpty]: Start isEmpty. Operand 17492 states and 28238 transitions. [2022-07-21 07:07:49,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-21 07:07:49,716 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:07:49,716 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:07:49,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 07:07:49,716 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:07:49,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:07:49,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1077780713, now seen corresponding path program 1 times [2022-07-21 07:07:49,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:07:49,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580300878] [2022-07-21 07:07:49,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:07:49,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:07:49,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:49,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 07:07:49,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:49,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 07:07:49,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:49,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 07:07:49,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:49,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 07:07:49,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:49,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 07:07:49,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:49,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:07:49,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:07:49,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580300878] [2022-07-21 07:07:49,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580300878] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:07:49,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:07:49,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 07:07:49,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555769634] [2022-07-21 07:07:49,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:07:49,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 07:07:49,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:07:49,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 07:07:49,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 07:07:49,819 INFO L87 Difference]: Start difference. First operand 17492 states and 28238 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-07-21 07:07:54,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:07:54,052 INFO L93 Difference]: Finished difference Result 62843 states and 100433 transitions. [2022-07-21 07:07:54,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 07:07:54,053 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-07-21 07:07:54,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:07:54,188 INFO L225 Difference]: With dead ends: 62843 [2022-07-21 07:07:54,189 INFO L226 Difference]: Without dead ends: 47487 [2022-07-21 07:07:54,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 07:07:54,231 INFO L413 NwaCegarLoop]: 4695 mSDtfsCounter, 4995 mSDsluCounter, 17136 mSDsCounter, 0 mSdLazyCounter, 2263 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5008 SdHoareTripleChecker+Valid, 21831 SdHoareTripleChecker+Invalid, 2341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-21 07:07:54,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5008 Valid, 21831 Invalid, 2341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2263 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-21 07:07:54,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47487 states. [2022-07-21 07:07:55,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47487 to 31929. [2022-07-21 07:07:55,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31929 states, 29082 states have (on average 1.5631318341242004) internal successors, (45459), 29213 states have internal predecessors, (45459), 1943 states have call successors, (1943), 775 states have call predecessors, (1943), 902 states have return successors, (4256), 2068 states have call predecessors, (4256), 1941 states have call successors, (4256) [2022-07-21 07:07:56,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31929 states to 31929 states and 51658 transitions. [2022-07-21 07:07:56,031 INFO L78 Accepts]: Start accepts. Automaton has 31929 states and 51658 transitions. Word has length 124 [2022-07-21 07:07:56,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:07:56,031 INFO L495 AbstractCegarLoop]: Abstraction has 31929 states and 51658 transitions. [2022-07-21 07:07:56,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-07-21 07:07:56,032 INFO L276 IsEmpty]: Start isEmpty. Operand 31929 states and 51658 transitions. [2022-07-21 07:07:56,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-21 07:07:56,049 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:07:56,049 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:07:56,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 07:07:56,050 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:07:56,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:07:56,050 INFO L85 PathProgramCache]: Analyzing trace with hash 523290393, now seen corresponding path program 1 times [2022-07-21 07:07:56,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:07:56,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521564633] [2022-07-21 07:07:56,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:07:56,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:07:56,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:56,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 07:07:56,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:56,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 07:07:56,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:56,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 07:07:56,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:56,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 07:07:56,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:56,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 07:07:56,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:07:56,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:07:56,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:07:56,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521564633] [2022-07-21 07:07:56,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521564633] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:07:56,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:07:56,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 07:07:56,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042495100] [2022-07-21 07:07:56,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:07:56,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 07:07:56,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:07:56,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 07:07:56,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 07:07:56,158 INFO L87 Difference]: Start difference. First operand 31929 states and 51658 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-07-21 07:08:03,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:08:03,496 INFO L93 Difference]: Finished difference Result 118758 states and 191663 transitions. [2022-07-21 07:08:03,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 07:08:03,497 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-07-21 07:08:03,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:08:03,799 INFO L225 Difference]: With dead ends: 118758 [2022-07-21 07:08:03,799 INFO L226 Difference]: Without dead ends: 88965 [2022-07-21 07:08:03,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 07:08:03,874 INFO L413 NwaCegarLoop]: 4583 mSDtfsCounter, 5145 mSDsluCounter, 17139 mSDsCounter, 0 mSdLazyCounter, 1932 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5167 SdHoareTripleChecker+Valid, 21722 SdHoareTripleChecker+Invalid, 2013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-21 07:08:03,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5167 Valid, 21722 Invalid, 2013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1932 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-21 07:08:03,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88965 states. [2022-07-21 07:08:07,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88965 to 61378. [2022-07-21 07:08:07,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61378 states, 55843 states have (on average 1.553587737048511) internal successors, (86757), 56102 states have internal predecessors, (86757), 3735 states have call successors, (3735), 1543 states have call predecessors, (3735), 1798 states have return successors, (10550), 3988 states have call predecessors, (10550), 3733 states have call successors, (10550) [2022-07-21 07:08:07,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61378 states to 61378 states and 101042 transitions. [2022-07-21 07:08:07,704 INFO L78 Accepts]: Start accepts. Automaton has 61378 states and 101042 transitions. Word has length 124 [2022-07-21 07:08:07,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:08:07,705 INFO L495 AbstractCegarLoop]: Abstraction has 61378 states and 101042 transitions. [2022-07-21 07:08:07,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-07-21 07:08:07,705 INFO L276 IsEmpty]: Start isEmpty. Operand 61378 states and 101042 transitions. [2022-07-21 07:08:07,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-21 07:08:07,733 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:08:07,733 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:08:07,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 07:08:07,734 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:08:07,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:08:07,734 INFO L85 PathProgramCache]: Analyzing trace with hash -533440809, now seen corresponding path program 1 times [2022-07-21 07:08:07,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:08:07,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224690727] [2022-07-21 07:08:07,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:08:07,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:08:07,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:08:07,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 07:08:07,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:08:07,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 07:08:07,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:08:07,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 07:08:07,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:08:07,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 07:08:07,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:08:07,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 07:08:07,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:08:07,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:08:07,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:08:07,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224690727] [2022-07-21 07:08:07,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224690727] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:08:07,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:08:07,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 07:08:07,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759401168] [2022-07-21 07:08:07,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:08:07,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 07:08:07,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:08:07,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 07:08:07,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 07:08:07,817 INFO L87 Difference]: Start difference. First operand 61378 states and 101042 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-07-21 07:08:21,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:08:21,287 INFO L93 Difference]: Finished difference Result 230013 states and 379509 transitions. [2022-07-21 07:08:21,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 07:08:21,288 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-07-21 07:08:21,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:08:22,205 INFO L225 Difference]: With dead ends: 230013 [2022-07-21 07:08:22,206 INFO L226 Difference]: Without dead ends: 170771 [2022-07-21 07:08:22,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 07:08:22,357 INFO L413 NwaCegarLoop]: 4578 mSDtfsCounter, 5105 mSDsluCounter, 17139 mSDsCounter, 0 mSdLazyCounter, 1924 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5127 SdHoareTripleChecker+Valid, 21717 SdHoareTripleChecker+Invalid, 2005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-21 07:08:22,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5127 Valid, 21717 Invalid, 2005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1924 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-21 07:08:22,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170771 states. [2022-07-21 07:08:29,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170771 to 120147. [2022-07-21 07:08:29,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120147 states, 109364 states have (on average 1.5496781390585568) internal successors, (169479), 109879 states have internal predecessors, (169479), 7191 states have call successors, (7191), 3079 states have call predecessors, (7191), 3590 states have return successors, (27384), 7700 states have call predecessors, (27384), 7189 states have call successors, (27384) [2022-07-21 07:08:30,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120147 states to 120147 states and 204054 transitions. [2022-07-21 07:08:30,780 INFO L78 Accepts]: Start accepts. Automaton has 120147 states and 204054 transitions. Word has length 124 [2022-07-21 07:08:30,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:08:30,781 INFO L495 AbstractCegarLoop]: Abstraction has 120147 states and 204054 transitions. [2022-07-21 07:08:30,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-07-21 07:08:30,782 INFO L276 IsEmpty]: Start isEmpty. Operand 120147 states and 204054 transitions. [2022-07-21 07:08:30,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-21 07:08:30,848 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:08:30,849 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:08:30,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 07:08:30,849 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:08:30,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:08:30,849 INFO L85 PathProgramCache]: Analyzing trace with hash 817944409, now seen corresponding path program 1 times [2022-07-21 07:08:30,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:08:30,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747518149] [2022-07-21 07:08:30,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:08:30,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:08:30,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:08:30,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 07:08:30,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:08:30,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 07:08:30,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:08:30,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 07:08:30,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:08:30,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 07:08:30,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:08:30,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 07:08:30,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:08:30,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:08:30,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:08:30,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747518149] [2022-07-21 07:08:30,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747518149] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:08:30,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:08:30,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 07:08:30,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024909681] [2022-07-21 07:08:30,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:08:30,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 07:08:30,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:08:30,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 07:08:30,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 07:08:30,931 INFO L87 Difference]: Start difference. First operand 120147 states and 204054 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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)