./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.08.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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_label42+token_ring.08.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 9803c0f5a18eedfb3ad16cce49537bdc49a8790d5c61a825350a143730d73381 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 01:52:12,216 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 01:52:12,218 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 01:52:12,258 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 01:52:12,259 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 01:52:12,262 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 01:52:12,263 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 01:52:12,266 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 01:52:12,268 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 01:52:12,271 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 01:52:12,272 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 01:52:12,275 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 01:52:12,275 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 01:52:12,277 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 01:52:12,278 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 01:52:12,280 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 01:52:12,281 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 01:52:12,281 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 01:52:12,283 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 01:52:12,287 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 01:52:12,288 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 01:52:12,288 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 01:52:12,289 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 01:52:12,290 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 01:52:12,296 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 01:52:12,296 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 01:52:12,296 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 01:52:12,297 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 01:52:12,298 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 01:52:12,298 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 01:52:12,298 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 01:52:12,299 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 01:52:12,300 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 01:52:12,300 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 01:52:12,301 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 01:52:12,301 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 01:52:12,302 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 01:52:12,302 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 01:52:12,302 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 01:52:12,303 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 01:52:12,304 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 01:52:12,304 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-28 01:52:12,332 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 01:52:12,333 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 01:52:12,334 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 01:52:12,334 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 01:52:12,334 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 01:52:12,335 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 01:52:12,335 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 01:52:12,336 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 01:52:12,336 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 01:52:12,336 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 01:52:12,337 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 01:52:12,337 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 01:52:12,337 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 01:52:12,337 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 01:52:12,337 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 01:52:12,337 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 01:52:12,338 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 01:52:12,338 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 01:52:12,338 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 01:52:12,338 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 01:52:12,338 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 01:52:12,338 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 01:52:12,338 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 01:52:12,339 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 01:52:12,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 01:52:12,339 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 01:52:12,339 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 01:52:12,339 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 01:52:12,339 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 01:52:12,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 01:52:12,340 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 01:52:12,340 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 01:52:12,340 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 01:52:12,340 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9803c0f5a18eedfb3ad16cce49537bdc49a8790d5c61a825350a143730d73381 [2021-12-28 01:52:12,606 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 01:52:12,631 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 01:52:12,633 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 01:52:12,634 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 01:52:12,636 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 01:52:12,637 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label42+token_ring.08.cil-2.c [2021-12-28 01:52:12,711 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01af0cab3/fc801f6877d0414caae178dd200f98a6/FLAGa261ac1e6 [2021-12-28 01:52:13,452 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 01:52:13,452 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.08.cil-2.c [2021-12-28 01:52:13,492 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01af0cab3/fc801f6877d0414caae178dd200f98a6/FLAGa261ac1e6 [2021-12-28 01:52:13,968 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01af0cab3/fc801f6877d0414caae178dd200f98a6 [2021-12-28 01:52:13,970 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 01:52:13,971 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 01:52:13,987 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 01:52:13,987 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 01:52:13,990 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 01:52:13,990 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 01:52:13" (1/1) ... [2021-12-28 01:52:13,991 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d796845 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:52:13, skipping insertion in model container [2021-12-28 01:52:13,991 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 01:52:13" (1/1) ... [2021-12-28 01:52:13,996 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 01:52:14,136 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 01:52:15,259 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_label42+token_ring.08.cil-2.c[378560,378573] [2021-12-28 01:52:15,283 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_label42+token_ring.08.cil-2.c[383339,383352] [2021-12-28 01:52:15,477 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 01:52:15,485 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 01:52:16,164 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_label42+token_ring.08.cil-2.c[378560,378573] [2021-12-28 01:52:16,179 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_label42+token_ring.08.cil-2.c[383339,383352] [2021-12-28 01:52:16,204 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 01:52:16,246 INFO L208 MainTranslator]: Completed translation [2021-12-28 01:52:16,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:52:16 WrapperNode [2021-12-28 01:52:16,246 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 01:52:16,247 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 01:52:16,247 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 01:52:16,247 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 01:52:16,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:52:16" (1/1) ... [2021-12-28 01:52:16,320 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:52:16" (1/1) ... [2021-12-28 01:52:16,635 INFO L137 Inliner]: procedures = 60, calls = 66, calls flagged for inlining = 37, calls inlined = 37, statements flattened = 12972 [2021-12-28 01:52:16,635 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 01:52:16,636 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 01:52:16,636 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 01:52:16,636 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 01:52:16,642 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:52:16" (1/1) ... [2021-12-28 01:52:16,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:52:16" (1/1) ... [2021-12-28 01:52:16,742 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:52:16" (1/1) ... [2021-12-28 01:52:16,743 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:52:16" (1/1) ... [2021-12-28 01:52:16,971 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:52:16" (1/1) ... [2021-12-28 01:52:17,014 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:52:16" (1/1) ... [2021-12-28 01:52:17,148 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:52:16" (1/1) ... [2021-12-28 01:52:17,188 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 01:52:17,190 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 01:52:17,190 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 01:52:17,190 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 01:52:17,190 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:52:16" (1/1) ... [2021-12-28 01:52:17,226 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 01:52:17,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 01:52:17,248 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-28 01:52:17,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-28 01:52:17,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 01:52:17,306 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-28 01:52:17,306 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-28 01:52:17,306 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-28 01:52:17,306 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-28 01:52:17,307 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-28 01:52:17,307 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-28 01:52:17,307 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-28 01:52:17,307 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-28 01:52:17,307 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-28 01:52:17,307 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-28 01:52:17,307 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-28 01:52:17,307 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-28 01:52:17,308 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-28 01:52:17,308 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-28 01:52:17,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 01:52:17,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 01:52:17,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 01:52:17,419 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 01:52:17,420 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 01:52:22,602 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 01:52:22,629 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 01:52:22,629 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-12-28 01:52:22,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 01:52:22 BoogieIcfgContainer [2021-12-28 01:52:22,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 01:52:22,636 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 01:52:22,636 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 01:52:22,638 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 01:52:22,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 01:52:13" (1/3) ... [2021-12-28 01:52:22,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46a0d11a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 01:52:22, skipping insertion in model container [2021-12-28 01:52:22,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:52:16" (2/3) ... [2021-12-28 01:52:22,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46a0d11a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 01:52:22, skipping insertion in model container [2021-12-28 01:52:22,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 01:52:22" (3/3) ... [2021-12-28 01:52:22,640 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.08.cil-2.c [2021-12-28 01:52:22,643 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 01:52:22,643 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-28 01:52:22,690 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 01:52:22,696 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-28 01:52:22,696 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-28 01:52:22,740 INFO L276 IsEmpty]: Start isEmpty. Operand has 2473 states, 2439 states have (on average 1.848708487084871) internal successors, (4509), 2444 states have internal predecessors, (4509), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2021-12-28 01:52:22,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-28 01:52:22,758 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:52:22,758 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:52:22,759 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:52:22,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:52:22,763 INFO L85 PathProgramCache]: Analyzing trace with hash -970277371, now seen corresponding path program 1 times [2021-12-28 01:52:22,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:52:22,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464892290] [2021-12-28 01:52:22,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:52:22,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:52:22,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:22,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:52:22,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:23,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 01:52:23,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:23,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-28 01:52:23,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:23,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 01:52:23,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:23,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-28 01:52:23,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:23,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:52:23,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:52:23,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464892290] [2021-12-28 01:52:23,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464892290] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:52:23,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:52:23,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 01:52:23,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125198757] [2021-12-28 01:52:23,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:52:23,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 01:52:23,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:52:23,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 01:52:23,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 01:52:23,145 INFO L87 Difference]: Start difference. First operand has 2473 states, 2439 states have (on average 1.848708487084871) internal successors, (4509), 2444 states have internal predecessors, (4509), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 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) [2021-12-28 01:52:24,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:52:24,301 INFO L93 Difference]: Finished difference Result 5037 states and 9272 transitions. [2021-12-28 01:52:24,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 01:52:24,303 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 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 135 [2021-12-28 01:52:24,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:52:24,328 INFO L225 Difference]: With dead ends: 5037 [2021-12-28 01:52:24,328 INFO L226 Difference]: Without dead ends: 2503 [2021-12-28 01:52:24,337 INFO L932 BasicCegarLoop]: 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 [2021-12-28 01:52:24,342 INFO L933 BasicCegarLoop]: 4511 mSDtfsCounter, 748 mSDsluCounter, 12379 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 16890 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-28 01:52:24,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [768 Valid, 16890 Invalid, 567 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [56 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-28 01:52:24,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2503 states. [2021-12-28 01:52:24,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2503 to 2405. [2021-12-28 01:52:24,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2405 states, 2373 states have (on average 1.8348082595870205) internal successors, (4354), 2376 states have internal predecessors, (4354), 24 states have call successors, (24), 7 states have call predecessors, (24), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-28 01:52:24,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2405 states to 2405 states and 4400 transitions. [2021-12-28 01:52:24,452 INFO L78 Accepts]: Start accepts. Automaton has 2405 states and 4400 transitions. Word has length 135 [2021-12-28 01:52:24,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:52:24,453 INFO L470 AbstractCegarLoop]: Abstraction has 2405 states and 4400 transitions. [2021-12-28 01:52:24,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 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) [2021-12-28 01:52:24,453 INFO L276 IsEmpty]: Start isEmpty. Operand 2405 states and 4400 transitions. [2021-12-28 01:52:24,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-28 01:52:24,455 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:52:24,455 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:52:24,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 01:52:24,456 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:52:24,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:52:24,457 INFO L85 PathProgramCache]: Analyzing trace with hash -540619065, now seen corresponding path program 1 times [2021-12-28 01:52:24,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:52:24,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206614999] [2021-12-28 01:52:24,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:52:24,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:52:24,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:24,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:52:24,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:24,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 01:52:24,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:24,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-28 01:52:24,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:24,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 01:52:24,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:24,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-28 01:52:24,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:24,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:52:24,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:52:24,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206614999] [2021-12-28 01:52:24,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206614999] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:52:24,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:52:24,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 01:52:24,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602602098] [2021-12-28 01:52:24,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:52:24,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 01:52:24,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:52:24,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 01:52:24,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 01:52:24,683 INFO L87 Difference]: Start difference. First operand 2405 states and 4400 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 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) [2021-12-28 01:52:26,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:52:26,421 INFO L93 Difference]: Finished difference Result 3147 states and 5591 transitions. [2021-12-28 01:52:26,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 01:52:26,422 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 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 135 [2021-12-28 01:52:26,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:52:26,434 INFO L225 Difference]: With dead ends: 3147 [2021-12-28 01:52:26,434 INFO L226 Difference]: Without dead ends: 2879 [2021-12-28 01:52:26,436 INFO L932 BasicCegarLoop]: 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 [2021-12-28 01:52:26,437 INFO L933 BasicCegarLoop]: 4478 mSDtfsCounter, 5066 mSDsluCounter, 12604 mSDsCounter, 0 mSdLazyCounter, 1435 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5081 SdHoareTripleChecker+Valid, 17082 SdHoareTripleChecker+Invalid, 1543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-28 01:52:26,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5081 Valid, 17082 Invalid, 1543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1435 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-28 01:52:26,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2879 states. [2021-12-28 01:52:26,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2879 to 2682. [2021-12-28 01:52:26,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2682 states, 2626 states have (on average 1.8111195734958112) internal successors, (4756), 2630 states have internal predecessors, (4756), 41 states have call successors, (41), 13 states have call predecessors, (41), 13 states have return successors, (42), 39 states have call predecessors, (42), 39 states have call successors, (42) [2021-12-28 01:52:26,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2682 states to 2682 states and 4839 transitions. [2021-12-28 01:52:26,493 INFO L78 Accepts]: Start accepts. Automaton has 2682 states and 4839 transitions. Word has length 135 [2021-12-28 01:52:26,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:52:26,494 INFO L470 AbstractCegarLoop]: Abstraction has 2682 states and 4839 transitions. [2021-12-28 01:52:26,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 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) [2021-12-28 01:52:26,494 INFO L276 IsEmpty]: Start isEmpty. Operand 2682 states and 4839 transitions. [2021-12-28 01:52:26,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-28 01:52:26,496 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:52:26,496 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:52:26,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 01:52:26,497 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:52:26,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:52:26,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1902621501, now seen corresponding path program 1 times [2021-12-28 01:52:26,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:52:26,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033342362] [2021-12-28 01:52:26,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:52:26,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:52:26,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:26,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:52:26,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:26,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 01:52:26,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:26,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-28 01:52:26,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:26,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 01:52:26,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:26,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-28 01:52:26,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:26,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:52:26,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:52:26,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033342362] [2021-12-28 01:52:26,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033342362] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:52:26,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:52:26,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:52:26,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216481467] [2021-12-28 01:52:26,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:52:26,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:52:26,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:52:26,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:52:26,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:52:26,782 INFO L87 Difference]: Start difference. First operand 2682 states and 4839 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-28 01:52:28,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:52:28,938 INFO L93 Difference]: Finished difference Result 3810 states and 6649 transitions. [2021-12-28 01:52:28,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:52:28,938 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 135 [2021-12-28 01:52:28,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:52:28,960 INFO L225 Difference]: With dead ends: 3810 [2021-12-28 01:52:28,960 INFO L226 Difference]: Without dead ends: 3265 [2021-12-28 01:52:28,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-28 01:52:28,972 INFO L933 BasicCegarLoop]: 4701 mSDtfsCounter, 5078 mSDsluCounter, 17275 mSDsCounter, 0 mSdLazyCounter, 2232 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5093 SdHoareTripleChecker+Valid, 21976 SdHoareTripleChecker+Invalid, 2304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 2232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-28 01:52:28,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5093 Valid, 21976 Invalid, 2304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 2232 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-28 01:52:28,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3265 states. [2021-12-28 01:52:29,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3265 to 2940. [2021-12-28 01:52:29,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2940 states, 2860 states have (on average 1.7902097902097902) internal successors, (5120), 2865 states have internal predecessors, (5120), 58 states have call successors, (58), 19 states have call predecessors, (58), 20 states have return successors, (61), 57 states have call predecessors, (61), 56 states have call successors, (61) [2021-12-28 01:52:29,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2940 states to 2940 states and 5239 transitions. [2021-12-28 01:52:29,087 INFO L78 Accepts]: Start accepts. Automaton has 2940 states and 5239 transitions. Word has length 135 [2021-12-28 01:52:29,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:52:29,088 INFO L470 AbstractCegarLoop]: Abstraction has 2940 states and 5239 transitions. [2021-12-28 01:52:29,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-28 01:52:29,088 INFO L276 IsEmpty]: Start isEmpty. Operand 2940 states and 5239 transitions. [2021-12-28 01:52:29,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-28 01:52:29,089 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:52:29,090 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:52:29,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 01:52:29,090 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:52:29,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:52:29,091 INFO L85 PathProgramCache]: Analyzing trace with hash 26310725, now seen corresponding path program 1 times [2021-12-28 01:52:29,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:52:29,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171926903] [2021-12-28 01:52:29,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:52:29,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:52:29,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:29,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:52:29,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:29,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 01:52:29,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:29,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-28 01:52:29,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:29,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 01:52:29,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:29,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-28 01:52:29,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:29,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:52:29,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:52:29,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171926903] [2021-12-28 01:52:29,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171926903] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:52:29,230 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:52:29,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:52:29,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476910112] [2021-12-28 01:52:29,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:52:29,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:52:29,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:52:29,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:52:29,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:52:29,232 INFO L87 Difference]: Start difference. First operand 2940 states and 5239 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-28 01:52:31,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:52:31,311 INFO L93 Difference]: Finished difference Result 4787 states and 8197 transitions. [2021-12-28 01:52:31,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:52:31,312 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 135 [2021-12-28 01:52:31,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:52:31,325 INFO L225 Difference]: With dead ends: 4787 [2021-12-28 01:52:31,325 INFO L226 Difference]: Without dead ends: 3984 [2021-12-28 01:52:31,328 INFO L932 BasicCegarLoop]: 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 [2021-12-28 01:52:31,328 INFO L933 BasicCegarLoop]: 4506 mSDtfsCounter, 5157 mSDsluCounter, 16785 mSDsCounter, 0 mSdLazyCounter, 1982 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5172 SdHoareTripleChecker+Valid, 21291 SdHoareTripleChecker+Invalid, 2089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-28 01:52:31,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5172 Valid, 21291 Invalid, 2089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1982 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-28 01:52:31,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3984 states. [2021-12-28 01:52:31,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3984 to 3457. [2021-12-28 01:52:31,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3457 states, 3329 states have (on average 1.756984079303094) internal successors, (5849), 3336 states have internal predecessors, (5849), 92 states have call successors, (92), 31 states have call predecessors, (92), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2021-12-28 01:52:31,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3457 states to 3457 states and 6044 transitions. [2021-12-28 01:52:31,411 INFO L78 Accepts]: Start accepts. Automaton has 3457 states and 6044 transitions. Word has length 135 [2021-12-28 01:52:31,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:52:31,412 INFO L470 AbstractCegarLoop]: Abstraction has 3457 states and 6044 transitions. [2021-12-28 01:52:31,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-28 01:52:31,412 INFO L276 IsEmpty]: Start isEmpty. Operand 3457 states and 6044 transitions. [2021-12-28 01:52:31,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-28 01:52:31,413 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:52:31,413 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:52:31,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 01:52:31,414 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:52:31,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:52:31,414 INFO L85 PathProgramCache]: Analyzing trace with hash 2028196995, now seen corresponding path program 1 times [2021-12-28 01:52:31,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:52:31,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916343711] [2021-12-28 01:52:31,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:52:31,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:52:31,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:31,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:52:31,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:31,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 01:52:31,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:31,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-28 01:52:31,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:31,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 01:52:31,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:31,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-28 01:52:31,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:31,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:52:31,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:52:31,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916343711] [2021-12-28 01:52:31,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916343711] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:52:31,509 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:52:31,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:52:31,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220920882] [2021-12-28 01:52:31,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:52:31,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:52:31,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:52:31,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:52:31,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:52:31,511 INFO L87 Difference]: Start difference. First operand 3457 states and 6044 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-28 01:52:33,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:52:33,592 INFO L93 Difference]: Finished difference Result 6668 states and 11162 transitions. [2021-12-28 01:52:33,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:52:33,593 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 135 [2021-12-28 01:52:33,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:52:33,609 INFO L225 Difference]: With dead ends: 6668 [2021-12-28 01:52:33,609 INFO L226 Difference]: Without dead ends: 5348 [2021-12-28 01:52:33,613 INFO L932 BasicCegarLoop]: 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 [2021-12-28 01:52:33,613 INFO L933 BasicCegarLoop]: 4689 mSDtfsCounter, 5073 mSDsluCounter, 17275 mSDsCounter, 0 mSdLazyCounter, 2231 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5088 SdHoareTripleChecker+Valid, 21964 SdHoareTripleChecker+Invalid, 2308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 2231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-28 01:52:33,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5088 Valid, 21964 Invalid, 2308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 2231 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-28 01:52:33,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5348 states. [2021-12-28 01:52:33,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5348 to 4492. [2021-12-28 01:52:33,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4492 states, 4268 states have (on average 1.7120431115276475) internal successors, (7307), 4279 states have internal predecessors, (7307), 160 states have call successors, (160), 55 states have call predecessors, (160), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2021-12-28 01:52:33,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4492 states to 4492 states and 7660 transitions. [2021-12-28 01:52:33,736 INFO L78 Accepts]: Start accepts. Automaton has 4492 states and 7660 transitions. Word has length 135 [2021-12-28 01:52:33,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:52:33,737 INFO L470 AbstractCegarLoop]: Abstraction has 4492 states and 7660 transitions. [2021-12-28 01:52:33,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-28 01:52:33,737 INFO L276 IsEmpty]: Start isEmpty. Operand 4492 states and 7660 transitions. [2021-12-28 01:52:33,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-28 01:52:33,739 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:52:33,739 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:52:33,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 01:52:33,740 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:52:33,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:52:33,740 INFO L85 PathProgramCache]: Analyzing trace with hash -539625339, now seen corresponding path program 1 times [2021-12-28 01:52:33,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:52:33,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289090544] [2021-12-28 01:52:33,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:52:33,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:52:33,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:33,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:52:33,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:33,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 01:52:33,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:33,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-28 01:52:33,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:33,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 01:52:33,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:33,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-28 01:52:33,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:33,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:52:33,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:52:33,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289090544] [2021-12-28 01:52:33,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289090544] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:52:33,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:52:33,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:52:33,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965064093] [2021-12-28 01:52:33,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:52:33,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:52:33,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:52:33,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:52:33,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:52:33,857 INFO L87 Difference]: Start difference. First operand 4492 states and 7660 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-28 01:52:35,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:52:35,979 INFO L93 Difference]: Finished difference Result 10422 states and 17096 transitions. [2021-12-28 01:52:35,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:52:35,980 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 135 [2021-12-28 01:52:35,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:52:36,022 INFO L225 Difference]: With dead ends: 10422 [2021-12-28 01:52:36,022 INFO L226 Difference]: Without dead ends: 8067 [2021-12-28 01:52:36,032 INFO L932 BasicCegarLoop]: 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 [2021-12-28 01:52:36,035 INFO L933 BasicCegarLoop]: 4681 mSDtfsCounter, 5068 mSDsluCounter, 17275 mSDsCounter, 0 mSdLazyCounter, 2211 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5083 SdHoareTripleChecker+Valid, 21956 SdHoareTripleChecker+Invalid, 2289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-28 01:52:36,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5083 Valid, 21956 Invalid, 2289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2211 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-28 01:52:36,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8067 states. [2021-12-28 01:52:36,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8067 to 6576. [2021-12-28 01:52:36,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6576 states, 6160 states have (on average 1.663474025974026) internal successors, (10247), 6179 states have internal predecessors, (10247), 296 states have call successors, (296), 103 states have call predecessors, (296), 118 states have return successors, (391), 309 states have call predecessors, (391), 294 states have call successors, (391) [2021-12-28 01:52:36,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6576 states to 6576 states and 10934 transitions. [2021-12-28 01:52:36,282 INFO L78 Accepts]: Start accepts. Automaton has 6576 states and 10934 transitions. Word has length 135 [2021-12-28 01:52:36,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:52:36,282 INFO L470 AbstractCegarLoop]: Abstraction has 6576 states and 10934 transitions. [2021-12-28 01:52:36,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-28 01:52:36,283 INFO L276 IsEmpty]: Start isEmpty. Operand 6576 states and 10934 transitions. [2021-12-28 01:52:36,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-28 01:52:36,287 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:52:36,287 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:52:36,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 01:52:36,288 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:52:36,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:52:36,288 INFO L85 PathProgramCache]: Analyzing trace with hash 2107979015, now seen corresponding path program 1 times [2021-12-28 01:52:36,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:52:36,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705041791] [2021-12-28 01:52:36,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:52:36,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:52:36,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:36,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:52:36,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:36,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 01:52:36,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:36,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-28 01:52:36,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:36,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 01:52:36,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:36,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-28 01:52:36,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:36,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:52:36,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:52:36,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705041791] [2021-12-28 01:52:36,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705041791] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:52:36,409 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:52:36,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:52:36,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67514911] [2021-12-28 01:52:36,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:52:36,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:52:36,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:52:36,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:52:36,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:52:36,411 INFO L87 Difference]: Start difference. First operand 6576 states and 10934 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-28 01:52:38,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:52:38,610 INFO L93 Difference]: Finished difference Result 17948 states and 29056 transitions. [2021-12-28 01:52:38,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:52:38,611 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 135 [2021-12-28 01:52:38,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:52:38,653 INFO L225 Difference]: With dead ends: 17948 [2021-12-28 01:52:38,654 INFO L226 Difference]: Without dead ends: 13509 [2021-12-28 01:52:38,670 INFO L932 BasicCegarLoop]: 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 [2021-12-28 01:52:38,672 INFO L933 BasicCegarLoop]: 4676 mSDtfsCounter, 5067 mSDsluCounter, 17275 mSDsCounter, 0 mSdLazyCounter, 2203 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5082 SdHoareTripleChecker+Valid, 21951 SdHoareTripleChecker+Invalid, 2281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-28 01:52:38,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5082 Valid, 21951 Invalid, 2281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2203 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-28 01:52:38,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13509 states. [2021-12-28 01:52:39,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13509 to 10757. [2021-12-28 01:52:39,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10757 states, 9957 states have (on average 1.6214723310234007) internal successors, (16145), 9992 states have internal predecessors, (16145), 568 states have call successors, (568), 199 states have call predecessors, (568), 230 states have return successors, (841), 597 states have call predecessors, (841), 566 states have call successors, (841) [2021-12-28 01:52:39,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10757 states to 10757 states and 17554 transitions. [2021-12-28 01:52:39,148 INFO L78 Accepts]: Start accepts. Automaton has 10757 states and 17554 transitions. Word has length 135 [2021-12-28 01:52:39,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:52:39,149 INFO L470 AbstractCegarLoop]: Abstraction has 10757 states and 17554 transitions. [2021-12-28 01:52:39,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-28 01:52:39,149 INFO L276 IsEmpty]: Start isEmpty. Operand 10757 states and 17554 transitions. [2021-12-28 01:52:39,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-28 01:52:39,155 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:52:39,155 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:52:39,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 01:52:39,156 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:52:39,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:52:39,156 INFO L85 PathProgramCache]: Analyzing trace with hash -23371707, now seen corresponding path program 1 times [2021-12-28 01:52:39,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:52:39,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35912218] [2021-12-28 01:52:39,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:52:39,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:52:39,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:39,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:52:39,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:39,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 01:52:39,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:39,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-28 01:52:39,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:39,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 01:52:39,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:39,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-28 01:52:39,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:39,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:52:39,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:52:39,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35912218] [2021-12-28 01:52:39,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35912218] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:52:39,278 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:52:39,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:52:39,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308169026] [2021-12-28 01:52:39,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:52:39,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:52:39,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:52:39,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:52:39,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:52:39,279 INFO L87 Difference]: Start difference. First operand 10757 states and 17554 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-28 01:52:40,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:52:40,623 INFO L93 Difference]: Finished difference Result 22268 states and 36159 transitions. [2021-12-28 01:52:40,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 01:52:40,624 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 135 [2021-12-28 01:52:40,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:52:40,655 INFO L225 Difference]: With dead ends: 22268 [2021-12-28 01:52:40,656 INFO L226 Difference]: Without dead ends: 13648 [2021-12-28 01:52:40,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-28 01:52:40,676 INFO L933 BasicCegarLoop]: 4410 mSDtfsCounter, 4885 mSDsluCounter, 12434 mSDsCounter, 0 mSdLazyCounter, 923 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4901 SdHoareTripleChecker+Valid, 16844 SdHoareTripleChecker+Invalid, 1028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-28 01:52:40,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4901 Valid, 16844 Invalid, 1028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 923 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-28 01:52:40,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13648 states. [2021-12-28 01:52:41,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13648 to 10757. [2021-12-28 01:52:41,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10757 states, 9957 states have (on average 1.6181580797428945) internal successors, (16112), 9992 states have internal predecessors, (16112), 568 states have call successors, (568), 199 states have call predecessors, (568), 230 states have return successors, (841), 597 states have call predecessors, (841), 566 states have call successors, (841) [2021-12-28 01:52:41,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10757 states to 10757 states and 17521 transitions. [2021-12-28 01:52:41,069 INFO L78 Accepts]: Start accepts. Automaton has 10757 states and 17521 transitions. Word has length 135 [2021-12-28 01:52:41,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:52:41,069 INFO L470 AbstractCegarLoop]: Abstraction has 10757 states and 17521 transitions. [2021-12-28 01:52:41,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-28 01:52:41,070 INFO L276 IsEmpty]: Start isEmpty. Operand 10757 states and 17521 transitions. [2021-12-28 01:52:41,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-28 01:52:41,075 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:52:41,075 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:52:41,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 01:52:41,075 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:52:41,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:52:41,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1061956281, now seen corresponding path program 1 times [2021-12-28 01:52:41,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:52:41,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720215755] [2021-12-28 01:52:41,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:52:41,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:52:41,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:41,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:52:41,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:41,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 01:52:41,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:41,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-28 01:52:41,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:41,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 01:52:41,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:41,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-28 01:52:41,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:41,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:52:41,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:52:41,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720215755] [2021-12-28 01:52:41,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720215755] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:52:41,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:52:41,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:52:41,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656769692] [2021-12-28 01:52:41,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:52:41,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:52:41,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:52:41,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:52:41,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:52:41,186 INFO L87 Difference]: Start difference. First operand 10757 states and 17521 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-28 01:52:43,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:52:43,952 INFO L93 Difference]: Finished difference Result 32965 states and 52934 transitions. [2021-12-28 01:52:43,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:52:43,952 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 135 [2021-12-28 01:52:43,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:52:44,015 INFO L225 Difference]: With dead ends: 32965 [2021-12-28 01:52:44,016 INFO L226 Difference]: Without dead ends: 24345 [2021-12-28 01:52:44,045 INFO L932 BasicCegarLoop]: 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 [2021-12-28 01:52:44,047 INFO L933 BasicCegarLoop]: 4665 mSDtfsCounter, 5059 mSDsluCounter, 17275 mSDsCounter, 0 mSdLazyCounter, 2176 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5074 SdHoareTripleChecker+Valid, 21940 SdHoareTripleChecker+Invalid, 2254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-28 01:52:44,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5074 Valid, 21940 Invalid, 2254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2176 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-28 01:52:44,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24345 states. [2021-12-28 01:52:44,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24345 to 19183. [2021-12-28 01:52:44,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19183 states, 17615 states have (on average 1.587056485949475) internal successors, (27956), 17682 states have internal predecessors, (27956), 1112 states have call successors, (1112), 391 states have call predecessors, (1112), 454 states have return successors, (1903), 1173 states have call predecessors, (1903), 1110 states have call successors, (1903) [2021-12-28 01:52:44,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19183 states to 19183 states and 30971 transitions. [2021-12-28 01:52:44,973 INFO L78 Accepts]: Start accepts. Automaton has 19183 states and 30971 transitions. Word has length 135 [2021-12-28 01:52:44,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:52:44,973 INFO L470 AbstractCegarLoop]: Abstraction has 19183 states and 30971 transitions. [2021-12-28 01:52:44,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-28 01:52:44,974 INFO L276 IsEmpty]: Start isEmpty. Operand 19183 states and 30971 transitions. [2021-12-28 01:52:44,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-28 01:52:44,983 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:52:44,983 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:52:44,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-28 01:52:44,984 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:52:44,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:52:44,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1259845637, now seen corresponding path program 1 times [2021-12-28 01:52:44,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:52:44,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694110919] [2021-12-28 01:52:44,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:52:44,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:52:44,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:45,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:52:45,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:45,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 01:52:45,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:45,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-28 01:52:45,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:45,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 01:52:45,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:45,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-28 01:52:45,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:45,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:52:45,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:52:45,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694110919] [2021-12-28 01:52:45,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694110919] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:52:45,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:52:45,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:52:45,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773986171] [2021-12-28 01:52:45,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:52:45,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:52:45,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:52:45,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:52:45,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:52:45,101 INFO L87 Difference]: Start difference. First operand 19183 states and 30971 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-28 01:52:50,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:52:50,044 INFO L93 Difference]: Finished difference Result 70813 states and 113344 transitions. [2021-12-28 01:52:50,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-28 01:52:50,045 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 135 [2021-12-28 01:52:50,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:52:50,186 INFO L225 Difference]: With dead ends: 70813 [2021-12-28 01:52:50,186 INFO L226 Difference]: Without dead ends: 53767 [2021-12-28 01:52:50,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-28 01:52:50,232 INFO L933 BasicCegarLoop]: 4658 mSDtfsCounter, 5388 mSDsluCounter, 17267 mSDsCounter, 0 mSdLazyCounter, 2161 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5412 SdHoareTripleChecker+Valid, 21925 SdHoareTripleChecker+Invalid, 2244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-28 01:52:50,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5412 Valid, 21925 Invalid, 2244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 2161 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-28 01:52:50,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53767 states. [2021-12-28 01:52:51,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53767 to 35904. [2021-12-28 01:52:52,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35904 states, 32864 states have (on average 1.5702896786757545) internal successors, (51606), 32995 states have internal predecessors, (51606), 2136 states have call successors, (2136), 775 states have call predecessors, (2136), 902 states have return successors, (4449), 2261 states have call predecessors, (4449), 2134 states have call successors, (4449) [2021-12-28 01:52:52,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35904 states to 35904 states and 58191 transitions. [2021-12-28 01:52:52,122 INFO L78 Accepts]: Start accepts. Automaton has 35904 states and 58191 transitions. Word has length 135 [2021-12-28 01:52:52,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:52:52,123 INFO L470 AbstractCegarLoop]: Abstraction has 35904 states and 58191 transitions. [2021-12-28 01:52:52,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-28 01:52:52,123 INFO L276 IsEmpty]: Start isEmpty. Operand 35904 states and 58191 transitions. [2021-12-28 01:52:52,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-28 01:52:52,142 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:52:52,142 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:52:52,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-28 01:52:52,143 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:52:52,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:52:52,144 INFO L85 PathProgramCache]: Analyzing trace with hash -882014841, now seen corresponding path program 1 times [2021-12-28 01:52:52,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:52:52,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983068007] [2021-12-28 01:52:52,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:52:52,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:52:52,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:52,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:52:52,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:52,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 01:52:52,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:52,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-28 01:52:52,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:52,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 01:52:52,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:52,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-28 01:52:52,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:52,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:52:52,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:52:52,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983068007] [2021-12-28 01:52:52,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983068007] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:52:52,250 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:52:52,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:52:52,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182457038] [2021-12-28 01:52:52,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:52:52,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:52:52,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:52:52,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:52:52,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:52:52,251 INFO L87 Difference]: Start difference. First operand 35904 states and 58191 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-28 01:53:01,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:53:01,263 INFO L93 Difference]: Finished difference Result 136652 states and 221030 transitions. [2021-12-28 01:53:01,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-28 01:53:01,266 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 135 [2021-12-28 01:53:01,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:53:01,624 INFO L225 Difference]: With dead ends: 136652 [2021-12-28 01:53:01,624 INFO L226 Difference]: Without dead ends: 102885 [2021-12-28 01:53:01,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-28 01:53:01,754 INFO L933 BasicCegarLoop]: 4615 mSDtfsCounter, 5197 mSDsluCounter, 16805 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5211 SdHoareTripleChecker+Valid, 21420 SdHoareTripleChecker+Invalid, 2418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-28 01:53:01,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5211 Valid, 21420 Invalid, 2418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-28 01:53:01,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102885 states. [2021-12-28 01:53:06,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102885 to 68001. [2021-12-28 01:53:06,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68001 states, 62081 states have (on average 1.5570625473172146) internal successors, (96664), 62340 states have internal predecessors, (96664), 4120 states have call successors, (4120), 1543 states have call predecessors, (4120), 1798 states have return successors, (10935), 4373 states have call predecessors, (10935), 4118 states have call successors, (10935) [2021-12-28 01:53:07,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68001 states to 68001 states and 111719 transitions. [2021-12-28 01:53:07,080 INFO L78 Accepts]: Start accepts. Automaton has 68001 states and 111719 transitions. Word has length 135 [2021-12-28 01:53:07,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:53:07,081 INFO L470 AbstractCegarLoop]: Abstraction has 68001 states and 111719 transitions. [2021-12-28 01:53:07,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-28 01:53:07,081 INFO L276 IsEmpty]: Start isEmpty. Operand 68001 states and 111719 transitions. [2021-12-28 01:53:07,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-28 01:53:07,119 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:53:07,119 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:53:07,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-28 01:53:07,119 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:53:07,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:53:07,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1505296443, now seen corresponding path program 1 times [2021-12-28 01:53:07,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:53:07,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443069633] [2021-12-28 01:53:07,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:53:07,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:53:07,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:53:07,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:53:07,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:53:07,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 01:53:07,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:53:07,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-28 01:53:07,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:53:07,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 01:53:07,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:53:07,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-28 01:53:07,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:53:07,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:53:07,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:53:07,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443069633] [2021-12-28 01:53:07,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443069633] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:53:07,235 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:53:07,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:53:07,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823261999] [2021-12-28 01:53:07,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:53:07,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:53:07,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:53:07,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:53:07,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:53:07,237 INFO L87 Difference]: Start difference. First operand 68001 states and 111719 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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)