./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label49+token_ring.07.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label49+token_ring.07.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a0d6ced7e0ff387d58cf8725410ee88dbee5b176eb503e82e37c165076b7e65d --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 19:06:12,916 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 19:06:12,917 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 19:06:12,947 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 19:06:12,947 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 19:06:12,948 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 19:06:12,949 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 19:06:12,950 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 19:06:12,951 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 19:06:12,952 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 19:06:12,952 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 19:06:12,953 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 19:06:12,953 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 19:06:12,954 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 19:06:12,955 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 19:06:12,955 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 19:06:12,956 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 19:06:12,957 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 19:06:12,958 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 19:06:12,959 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 19:06:12,959 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 19:06:12,960 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 19:06:12,961 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 19:06:12,961 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 19:06:12,963 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 19:06:12,963 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 19:06:12,963 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 19:06:12,964 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 19:06:12,964 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 19:06:12,965 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 19:06:12,965 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 19:06:12,966 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 19:06:12,966 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 19:06:12,967 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 19:06:12,967 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 19:06:12,968 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 19:06:12,968 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 19:06:12,968 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 19:06:12,968 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 19:06:12,969 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 19:06:12,970 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 19:06:12,970 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 19:06:12,983 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 19:06:12,983 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 19:06:12,983 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 19:06:12,984 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 19:06:12,984 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 19:06:12,984 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 19:06:12,985 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 19:06:12,985 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 19:06:12,985 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 19:06:12,985 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 19:06:12,985 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 19:06:12,985 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 19:06:12,986 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 19:06:12,986 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 19:06:12,986 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 19:06:12,986 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 19:06:12,986 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 19:06:12,986 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 19:06:12,986 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 19:06:12,987 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 19:06:12,987 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 19:06:12,987 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 19:06:12,987 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 19:06:12,987 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 19:06:12,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 19:06:12,987 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 19:06:12,988 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 19:06:12,988 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 19:06:12,988 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 19:06:12,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 19:06:12,988 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 19:06:12,988 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 19:06:12,988 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 19:06:12,989 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 19:06:12,989 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0d6ced7e0ff387d58cf8725410ee88dbee5b176eb503e82e37c165076b7e65d [2021-12-17 19:06:13,126 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 19:06:13,145 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 19:06:13,146 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 19:06:13,147 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 19:06:13,148 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 19:06:13,148 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label49+token_ring.07.cil-2.c [2021-12-17 19:06:13,196 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e23abda70/f9215acca6f6485bbcc16ef1f1b10606/FLAGb3d774031 [2021-12-17 19:06:13,875 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 19:06:13,876 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.07.cil-2.c [2021-12-17 19:06:13,909 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e23abda70/f9215acca6f6485bbcc16ef1f1b10606/FLAGb3d774031 [2021-12-17 19:06:14,221 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e23abda70/f9215acca6f6485bbcc16ef1f1b10606 [2021-12-17 19:06:14,223 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 19:06:14,224 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 19:06:14,225 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 19:06:14,225 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 19:06:14,227 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 19:06:14,228 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 07:06:14" (1/1) ... [2021-12-17 19:06:14,229 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d762bb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:06:14, skipping insertion in model container [2021-12-17 19:06:14,229 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 07:06:14" (1/1) ... [2021-12-17 19:06:14,233 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 19:06:14,351 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 19:06:15,523 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.07.cil-2.c[380593,380606] [2021-12-17 19:06:15,541 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.07.cil-2.c[383339,383352] [2021-12-17 19:06:15,693 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 19:06:15,700 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 19:06:16,244 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.07.cil-2.c[380593,380606] [2021-12-17 19:06:16,249 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.07.cil-2.c[383339,383352] [2021-12-17 19:06:16,269 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 19:06:16,333 INFO L208 MainTranslator]: Completed translation [2021-12-17 19:06:16,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:06:16 WrapperNode [2021-12-17 19:06:16,334 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 19:06:16,335 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 19:06:16,335 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 19:06:16,336 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 19:06:16,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:06:16" (1/1) ... [2021-12-17 19:06:16,458 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:06:16" (1/1) ... [2021-12-17 19:06:16,671 INFO L137 Inliner]: procedures = 58, calls = 63, calls flagged for inlining = 35, calls inlined = 35, statements flattened = 12914 [2021-12-17 19:06:16,671 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 19:06:16,672 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 19:06:16,672 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 19:06:16,672 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 19:06:16,678 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:06:16" (1/1) ... [2021-12-17 19:06:16,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:06:16" (1/1) ... [2021-12-17 19:06:16,711 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:06:16" (1/1) ... [2021-12-17 19:06:16,712 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:06:16" (1/1) ... [2021-12-17 19:06:16,902 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:06:16" (1/1) ... [2021-12-17 19:06:16,935 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:06:16" (1/1) ... [2021-12-17 19:06:16,960 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:06:16" (1/1) ... [2021-12-17 19:06:17,009 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 19:06:17,010 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 19:06:17,010 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 19:06:17,010 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 19:06:17,012 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:06:16" (1/1) ... [2021-12-17 19:06:17,018 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 19:06:17,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 19:06:17,058 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) [2021-12-17 19:06:17,084 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 [2021-12-17 19:06:17,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 19:06:17,102 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-17 19:06:17,102 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-17 19:06:17,102 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-17 19:06:17,102 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-17 19:06:17,102 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-17 19:06:17,102 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-17 19:06:17,102 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-17 19:06:17,103 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-17 19:06:17,103 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-17 19:06:17,103 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-17 19:06:17,103 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-17 19:06:17,103 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-17 19:06:17,103 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-17 19:06:17,103 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-17 19:06:17,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 19:06:17,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 19:06:17,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 19:06:17,290 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 19:06:17,295 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 19:06:22,150 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 19:06:22,178 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 19:06:22,178 INFO L301 CfgBuilder]: Removed 11 assume(true) statements. [2021-12-17 19:06:22,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 07:06:22 BoogieIcfgContainer [2021-12-17 19:06:22,183 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 19:06:22,185 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 19:06:22,185 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 19:06:22,187 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 19:06:22,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 07:06:14" (1/3) ... [2021-12-17 19:06:22,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@426aa0c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 07:06:22, skipping insertion in model container [2021-12-17 19:06:22,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:06:16" (2/3) ... [2021-12-17 19:06:22,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@426aa0c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 07:06:22, skipping insertion in model container [2021-12-17 19:06:22,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 07:06:22" (3/3) ... [2021-12-17 19:06:22,189 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.07.cil-2.c [2021-12-17 19:06:22,193 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 19:06:22,194 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-17 19:06:22,260 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 19:06:22,265 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 [2021-12-17 19:06:22,265 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-17 19:06:22,328 INFO L276 IsEmpty]: Start isEmpty. Operand has 2448 states, 2415 states have (on average 1.850103519668737) internal successors, (4468), 2420 states have internal predecessors, (4468), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2021-12-17 19:06:22,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-17 19:06:22,339 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:06:22,339 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] [2021-12-17 19:06:22,340 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:06:22,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:06:22,343 INFO L85 PathProgramCache]: Analyzing trace with hash -818812197, now seen corresponding path program 1 times [2021-12-17 19:06:22,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:06:22,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217636313] [2021-12-17 19:06:22,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:06:22,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:06:22,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:22,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:06:22,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:22,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 19:06:22,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:22,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 19:06:22,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:22,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 19:06:22,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:22,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 19:06:22,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:22,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:06:22,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:06:22,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217636313] [2021-12-17 19:06:22,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217636313] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:06:22,677 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:06:22,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 19:06:22,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768989427] [2021-12-17 19:06:22,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:06:22,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 19:06:22,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:06:22,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 19:06:22,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 19:06:22,706 INFO L87 Difference]: Start difference. First operand has 2448 states, 2415 states have (on average 1.850103519668737) internal successors, (4468), 2420 states have internal predecessors, (4468), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:06:23,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:06:23,670 INFO L93 Difference]: Finished difference Result 4970 states and 9155 transitions. [2021-12-17 19:06:23,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 19:06:23,672 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2021-12-17 19:06:23,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:06:23,692 INFO L225 Difference]: With dead ends: 4970 [2021-12-17 19:06:23,692 INFO L226 Difference]: Without dead ends: 2467 [2021-12-17 19:06:23,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-17 19:06:23,705 INFO L933 BasicCegarLoop]: 4465 mSDtfsCounter, 667 mSDsluCounter, 12368 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 16833 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-17 19:06:23,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [686 Valid, 16833 Invalid, 497 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [54 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-17 19:06:23,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2467 states. [2021-12-17 19:06:23,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2467 to 2380. [2021-12-17 19:06:23,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2380 states, 2349 states have (on average 1.8369518944231589) internal successors, (4315), 2352 states have internal predecessors, (4315), 23 states have call successors, (23), 7 states have call predecessors, (23), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-12-17 19:06:23,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2380 states to 2380 states and 4359 transitions. [2021-12-17 19:06:23,943 INFO L78 Accepts]: Start accepts. Automaton has 2380 states and 4359 transitions. Word has length 124 [2021-12-17 19:06:23,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:06:23,944 INFO L470 AbstractCegarLoop]: Abstraction has 2380 states and 4359 transitions. [2021-12-17 19:06:23,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:06:23,944 INFO L276 IsEmpty]: Start isEmpty. Operand 2380 states and 4359 transitions. [2021-12-17 19:06:23,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-17 19:06:23,949 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:06:23,949 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] [2021-12-17 19:06:23,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 19:06:23,949 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:06:23,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:06:23,950 INFO L85 PathProgramCache]: Analyzing trace with hash 219772377, now seen corresponding path program 1 times [2021-12-17 19:06:23,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:06:23,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284302355] [2021-12-17 19:06:23,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:06:23,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:06:23,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:24,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:06:24,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:24,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 19:06:24,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:24,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 19:06:24,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:24,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 19:06:24,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:24,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 19:06:24,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:24,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:06:24,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:06:24,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284302355] [2021-12-17 19:06:24,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284302355] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:06:24,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:06:24,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 19:06:24,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092351711] [2021-12-17 19:06:24,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:06:24,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 19:06:24,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:06:24,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 19:06:24,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 19:06:24,160 INFO L87 Difference]: Start difference. First operand 2380 states and 4359 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:06:25,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:06:25,821 INFO L93 Difference]: Finished difference Result 3050 states and 5430 transitions. [2021-12-17 19:06:25,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 19:06:25,822 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2021-12-17 19:06:25,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:06:25,831 INFO L225 Difference]: With dead ends: 3050 [2021-12-17 19:06:25,832 INFO L226 Difference]: Without dead ends: 2806 [2021-12-17 19:06:25,833 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 [2021-12-17 19:06:25,834 INFO L933 BasicCegarLoop]: 4428 mSDtfsCounter, 4951 mSDsluCounter, 12588 mSDsCounter, 0 mSdLazyCounter, 1242 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4965 SdHoareTripleChecker+Valid, 17016 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-17 19:06:25,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4965 Valid, 17016 Invalid, 1346 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [104 Valid, 1242 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-17 19:06:25,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2806 states. [2021-12-17 19:06:25,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2806 to 2631. [2021-12-17 19:06:25,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2631 states, 2577 states have (on average 1.8145129996119518) internal successors, (4676), 2581 states have internal predecessors, (4676), 39 states have call successors, (39), 13 states have call predecessors, (39), 13 states have return successors, (40), 37 states have call predecessors, (40), 37 states have call successors, (40) [2021-12-17 19:06:25,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2631 states to 2631 states and 4755 transitions. [2021-12-17 19:06:25,887 INFO L78 Accepts]: Start accepts. Automaton has 2631 states and 4755 transitions. Word has length 124 [2021-12-17 19:06:25,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:06:25,888 INFO L470 AbstractCegarLoop]: Abstraction has 2631 states and 4755 transitions. [2021-12-17 19:06:25,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:06:25,888 INFO L276 IsEmpty]: Start isEmpty. Operand 2631 states and 4755 transitions. [2021-12-17 19:06:25,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-17 19:06:25,891 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:06:25,891 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] [2021-12-17 19:06:25,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 19:06:25,892 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:06:25,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:06:25,892 INFO L85 PathProgramCache]: Analyzing trace with hash -797876011, now seen corresponding path program 1 times [2021-12-17 19:06:25,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:06:25,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961857418] [2021-12-17 19:06:25,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:06:25,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:06:25,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:25,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:06:25,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:25,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 19:06:25,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:25,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 19:06:25,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:25,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 19:06:25,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:25,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 19:06:26,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:26,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:06:26,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:06:26,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961857418] [2021-12-17 19:06:26,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961857418] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:06:26,003 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:06:26,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:06:26,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329437274] [2021-12-17 19:06:26,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:06:26,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:06:26,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:06:26,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:06:26,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:06:26,005 INFO L87 Difference]: Start difference. First operand 2631 states and 4755 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:06:27,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:06:27,918 INFO L93 Difference]: Finished difference Result 3648 states and 6379 transitions. [2021-12-17 19:06:27,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 19:06:27,919 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2021-12-17 19:06:27,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:06:27,930 INFO L225 Difference]: With dead ends: 3648 [2021-12-17 19:06:27,930 INFO L226 Difference]: Without dead ends: 3153 [2021-12-17 19:06:27,933 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 [2021-12-17 19:06:27,933 INFO L933 BasicCegarLoop]: 4631 mSDtfsCounter, 4958 mSDsluCounter, 17199 mSDsCounter, 0 mSdLazyCounter, 1958 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4972 SdHoareTripleChecker+Valid, 21830 SdHoareTripleChecker+Invalid, 2027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-17 19:06:27,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4972 Valid, 21830 Invalid, 2027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1958 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-17 19:06:27,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3153 states. [2021-12-17 19:06:27,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3153 to 2865. [2021-12-17 19:06:27,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2865 states, 2788 states have (on average 1.7944763271162123) internal successors, (5003), 2793 states have internal predecessors, (5003), 55 states have call successors, (55), 19 states have call predecessors, (55), 20 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2021-12-17 19:06:28,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2865 states to 2865 states and 5116 transitions. [2021-12-17 19:06:28,003 INFO L78 Accepts]: Start accepts. Automaton has 2865 states and 5116 transitions. Word has length 124 [2021-12-17 19:06:28,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:06:28,003 INFO L470 AbstractCegarLoop]: Abstraction has 2865 states and 5116 transitions. [2021-12-17 19:06:28,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:06:28,004 INFO L276 IsEmpty]: Start isEmpty. Operand 2865 states and 5116 transitions. [2021-12-17 19:06:28,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-17 19:06:28,005 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:06:28,006 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] [2021-12-17 19:06:28,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 19:06:28,006 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:06:28,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:06:28,007 INFO L85 PathProgramCache]: Analyzing trace with hash -679434537, now seen corresponding path program 1 times [2021-12-17 19:06:28,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:06:28,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745796006] [2021-12-17 19:06:28,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:06:28,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:06:28,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:28,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:06:28,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:28,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 19:06:28,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:28,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 19:06:28,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:28,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 19:06:28,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:28,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 19:06:28,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:28,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:06:28,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:06:28,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745796006] [2021-12-17 19:06:28,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745796006] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:06:28,107 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:06:28,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:06:28,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286889991] [2021-12-17 19:06:28,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:06:28,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:06:28,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:06:28,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:06:28,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:06:28,109 INFO L87 Difference]: Start difference. First operand 2865 states and 5116 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:06:29,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:06:29,702 INFO L93 Difference]: Finished difference Result 4529 states and 7768 transitions. [2021-12-17 19:06:29,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 19:06:29,703 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2021-12-17 19:06:29,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:06:29,714 INFO L225 Difference]: With dead ends: 4529 [2021-12-17 19:06:29,714 INFO L226 Difference]: Without dead ends: 3800 [2021-12-17 19:06:29,717 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 [2021-12-17 19:06:29,717 INFO L933 BasicCegarLoop]: 4623 mSDtfsCounter, 4955 mSDsluCounter, 17195 mSDsCounter, 0 mSdLazyCounter, 1964 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4969 SdHoareTripleChecker+Valid, 21818 SdHoareTripleChecker+Invalid, 2036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-17 19:06:29,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4969 Valid, 21818 Invalid, 2036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1964 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-17 19:06:29,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3800 states. [2021-12-17 19:06:29,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3800 to 3334. [2021-12-17 19:06:29,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3334 states, 3211 states have (on average 1.7620678916225474) internal successors, (5658), 3218 states have internal predecessors, (5658), 87 states have call successors, (87), 31 states have call predecessors, (87), 34 states have return successors, (98), 88 states have call predecessors, (98), 85 states have call successors, (98) [2021-12-17 19:06:29,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3334 states to 3334 states and 5843 transitions. [2021-12-17 19:06:29,788 INFO L78 Accepts]: Start accepts. Automaton has 3334 states and 5843 transitions. Word has length 124 [2021-12-17 19:06:29,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:06:29,789 INFO L470 AbstractCegarLoop]: Abstraction has 3334 states and 5843 transitions. [2021-12-17 19:06:29,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:06:29,789 INFO L276 IsEmpty]: Start isEmpty. Operand 3334 states and 5843 transitions. [2021-12-17 19:06:29,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-17 19:06:29,790 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:06:29,791 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] [2021-12-17 19:06:29,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 19:06:29,791 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:06:29,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:06:29,791 INFO L85 PathProgramCache]: Analyzing trace with hash 709859477, now seen corresponding path program 1 times [2021-12-17 19:06:29,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:06:29,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878568750] [2021-12-17 19:06:29,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:06:29,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:06:29,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:29,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:06:29,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:29,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 19:06:29,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:29,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 19:06:29,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:29,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 19:06:29,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:29,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 19:06:29,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:29,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:06:29,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:06:29,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878568750] [2021-12-17 19:06:29,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878568750] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:06:29,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:06:29,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:06:29,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988494237] [2021-12-17 19:06:29,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:06:29,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:06:29,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:06:29,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:06:29,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:06:29,864 INFO L87 Difference]: Start difference. First operand 3334 states and 5843 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:06:31,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:06:31,578 INFO L93 Difference]: Finished difference Result 6226 states and 10431 transitions. [2021-12-17 19:06:31,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 19:06:31,579 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2021-12-17 19:06:31,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:06:31,601 INFO L225 Difference]: With dead ends: 6226 [2021-12-17 19:06:31,601 INFO L226 Difference]: Without dead ends: 5028 [2021-12-17 19:06:31,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 19:06:31,608 INFO L933 BasicCegarLoop]: 4619 mSDtfsCounter, 4951 mSDsluCounter, 17195 mSDsCounter, 0 mSdLazyCounter, 1959 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4965 SdHoareTripleChecker+Valid, 21814 SdHoareTripleChecker+Invalid, 2031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-17 19:06:31,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4965 Valid, 21814 Invalid, 2031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1959 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-17 19:06:31,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5028 states. [2021-12-17 19:06:31,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5028 to 4273. [2021-12-17 19:06:31,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4273 states, 4058 states have (on average 1.7171020206998522) internal successors, (6968), 4069 states have internal predecessors, (6968), 151 states have call successors, (151), 55 states have call predecessors, (151), 62 states have return successors, (184), 156 states have call predecessors, (184), 149 states have call successors, (184) [2021-12-17 19:06:31,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4273 states to 4273 states and 7303 transitions. [2021-12-17 19:06:31,793 INFO L78 Accepts]: Start accepts. Automaton has 4273 states and 7303 transitions. Word has length 124 [2021-12-17 19:06:31,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:06:31,793 INFO L470 AbstractCegarLoop]: Abstraction has 4273 states and 7303 transitions. [2021-12-17 19:06:31,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:06:31,805 INFO L276 IsEmpty]: Start isEmpty. Operand 4273 states and 7303 transitions. [2021-12-17 19:06:31,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-17 19:06:31,809 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:06:31,809 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] [2021-12-17 19:06:31,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 19:06:31,809 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:06:31,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:06:31,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1323534569, now seen corresponding path program 1 times [2021-12-17 19:06:31,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:06:31,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209299455] [2021-12-17 19:06:31,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:06:31,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:06:31,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:31,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:06:31,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:31,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 19:06:31,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:31,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 19:06:31,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:31,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 19:06:31,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:31,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 19:06:31,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:31,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:06:31,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:06:31,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209299455] [2021-12-17 19:06:31,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209299455] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:06:31,915 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:06:31,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:06:31,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701075657] [2021-12-17 19:06:31,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:06:31,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:06:31,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:06:31,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:06:31,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:06:31,918 INFO L87 Difference]: Start difference. First operand 4273 states and 7303 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:06:33,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:06:33,627 INFO L93 Difference]: Finished difference Result 9619 states and 15773 transitions. [2021-12-17 19:06:33,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 19:06:33,628 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2021-12-17 19:06:33,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:06:33,654 INFO L225 Difference]: With dead ends: 9619 [2021-12-17 19:06:33,654 INFO L226 Difference]: Without dead ends: 7482 [2021-12-17 19:06:33,662 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 [2021-12-17 19:06:33,663 INFO L933 BasicCegarLoop]: 4615 mSDtfsCounter, 4947 mSDsluCounter, 17195 mSDsCounter, 0 mSdLazyCounter, 1954 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4961 SdHoareTripleChecker+Valid, 21810 SdHoareTripleChecker+Invalid, 2026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-17 19:06:33,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4961 Valid, 21810 Invalid, 2026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1954 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-17 19:06:33,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7482 states. [2021-12-17 19:06:33,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7482 to 6156. [2021-12-17 19:06:33,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6156 states, 5757 states have (on average 1.6664929650859823) internal successors, (9594), 5776 states have internal predecessors, (9594), 279 states have call successors, (279), 103 states have call predecessors, (279), 118 states have return successors, (374), 292 states have call predecessors, (374), 277 states have call successors, (374) [2021-12-17 19:06:33,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6156 states to 6156 states and 10247 transitions. [2021-12-17 19:06:33,874 INFO L78 Accepts]: Start accepts. Automaton has 6156 states and 10247 transitions. Word has length 124 [2021-12-17 19:06:33,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:06:33,875 INFO L470 AbstractCegarLoop]: Abstraction has 6156 states and 10247 transitions. [2021-12-17 19:06:33,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:06:33,875 INFO L276 IsEmpty]: Start isEmpty. Operand 6156 states and 10247 transitions. [2021-12-17 19:06:33,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-17 19:06:33,878 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:06:33,878 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] [2021-12-17 19:06:33,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 19:06:33,879 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:06:33,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:06:33,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1104724053, now seen corresponding path program 1 times [2021-12-17 19:06:33,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:06:33,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240891070] [2021-12-17 19:06:33,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:06:33,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:06:33,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:33,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:06:33,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:33,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 19:06:33,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:33,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 19:06:33,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:33,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 19:06:33,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:33,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 19:06:33,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:33,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:06:33,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:06:33,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240891070] [2021-12-17 19:06:33,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240891070] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:06:33,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:06:33,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:06:33,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354077973] [2021-12-17 19:06:33,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:06:33,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:06:33,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:06:33,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:06:33,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:06:33,974 INFO L87 Difference]: Start difference. First operand 6156 states and 10247 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:06:35,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:06:35,729 INFO L93 Difference]: Finished difference Result 16404 states and 26515 transitions. [2021-12-17 19:06:35,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 19:06:35,730 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2021-12-17 19:06:35,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:06:35,825 INFO L225 Difference]: With dead ends: 16404 [2021-12-17 19:06:35,844 INFO L226 Difference]: Without dead ends: 12384 [2021-12-17 19:06:35,859 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 [2021-12-17 19:06:35,878 INFO L933 BasicCegarLoop]: 4609 mSDtfsCounter, 4946 mSDsluCounter, 17195 mSDsCounter, 0 mSdLazyCounter, 1946 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4960 SdHoareTripleChecker+Valid, 21804 SdHoareTripleChecker+Invalid, 2021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-17 19:06:35,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4960 Valid, 21804 Invalid, 2021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1946 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-17 19:06:35,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12384 states. [2021-12-17 19:06:36,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12384 to 9935. [2021-12-17 19:06:36,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9935 states, 9168 states have (on average 1.6212914485165795) internal successors, (14864), 9203 states have internal predecessors, (14864), 535 states have call successors, (535), 199 states have call predecessors, (535), 230 states have return successors, (808), 564 states have call predecessors, (808), 533 states have call successors, (808) [2021-12-17 19:06:36,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9935 states to 9935 states and 16207 transitions. [2021-12-17 19:06:36,217 INFO L78 Accepts]: Start accepts. Automaton has 9935 states and 16207 transitions. Word has length 124 [2021-12-17 19:06:36,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:06:36,218 INFO L470 AbstractCegarLoop]: Abstraction has 9935 states and 16207 transitions. [2021-12-17 19:06:36,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:06:36,218 INFO L276 IsEmpty]: Start isEmpty. Operand 9935 states and 16207 transitions. [2021-12-17 19:06:36,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-17 19:06:36,225 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:06:36,225 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:06:36,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 19:06:36,225 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:06:36,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:06:36,226 INFO L85 PathProgramCache]: Analyzing trace with hash -202418345, now seen corresponding path program 1 times [2021-12-17 19:06:36,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:06:36,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138356556] [2021-12-17 19:06:36,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:06:36,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:06:36,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:36,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:06:36,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:36,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 19:06:36,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:36,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 19:06:36,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:36,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 19:06:36,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:36,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 19:06:36,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:36,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:06:36,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:06:36,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138356556] [2021-12-17 19:06:36,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138356556] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:06:36,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:06:36,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:06:36,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467053132] [2021-12-17 19:06:36,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:06:36,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:06:36,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:06:36,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:06:36,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:06:36,328 INFO L87 Difference]: Start difference. First operand 9935 states and 16207 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:06:37,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:06:37,496 INFO L93 Difference]: Finished difference Result 20276 states and 32868 transitions. [2021-12-17 19:06:37,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:06:37,497 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2021-12-17 19:06:37,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:06:37,527 INFO L225 Difference]: With dead ends: 20276 [2021-12-17 19:06:37,527 INFO L226 Difference]: Without dead ends: 12477 [2021-12-17 19:06:37,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 19:06:37,547 INFO L933 BasicCegarLoop]: 4362 mSDtfsCounter, 4791 mSDsluCounter, 12384 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4806 SdHoareTripleChecker+Valid, 16746 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 19:06:37,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4806 Valid, 16746 Invalid, 926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 19:06:37,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12477 states. [2021-12-17 19:06:37,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12477 to 9935. [2021-12-17 19:06:37,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9935 states, 9168 states have (on average 1.6176919720767888) internal successors, (14831), 9203 states have internal predecessors, (14831), 535 states have call successors, (535), 199 states have call predecessors, (535), 230 states have return successors, (808), 564 states have call predecessors, (808), 533 states have call successors, (808) [2021-12-17 19:06:37,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9935 states to 9935 states and 16174 transitions. [2021-12-17 19:06:37,833 INFO L78 Accepts]: Start accepts. Automaton has 9935 states and 16174 transitions. Word has length 124 [2021-12-17 19:06:37,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:06:37,834 INFO L470 AbstractCegarLoop]: Abstraction has 9935 states and 16174 transitions. [2021-12-17 19:06:37,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:06:37,834 INFO L276 IsEmpty]: Start isEmpty. Operand 9935 states and 16174 transitions. [2021-12-17 19:06:37,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-17 19:06:37,840 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:06:37,840 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] [2021-12-17 19:06:37,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 19:06:37,840 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:06:37,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:06:37,841 INFO L85 PathProgramCache]: Analyzing trace with hash 828622553, now seen corresponding path program 1 times [2021-12-17 19:06:37,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:06:37,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44389331] [2021-12-17 19:06:37,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:06:37,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:06:37,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:37,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:06:37,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:37,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 19:06:37,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:37,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 19:06:37,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:37,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 19:06:37,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:37,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 19:06:37,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:37,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:06:37,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:06:37,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44389331] [2021-12-17 19:06:37,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44389331] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:06:37,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:06:37,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:06:37,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035316797] [2021-12-17 19:06:37,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:06:37,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:06:37,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:06:37,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:06:37,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:06:37,935 INFO L87 Difference]: Start difference. First operand 9935 states and 16174 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:06:38,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:06:38,885 INFO L93 Difference]: Finished difference Result 20242 states and 32701 transitions. [2021-12-17 19:06:38,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:06:38,886 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2021-12-17 19:06:38,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:06:38,919 INFO L225 Difference]: With dead ends: 20242 [2021-12-17 19:06:38,919 INFO L226 Difference]: Without dead ends: 12443 [2021-12-17 19:06:38,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 19:06:38,942 INFO L933 BasicCegarLoop]: 4358 mSDtfsCounter, 4787 mSDsluCounter, 12382 mSDsCounter, 0 mSdLazyCounter, 816 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4802 SdHoareTripleChecker+Valid, 16740 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-17 19:06:38,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4802 Valid, 16740 Invalid, 920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 816 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-17 19:06:38,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12443 states. [2021-12-17 19:06:39,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12443 to 9935. [2021-12-17 19:06:39,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9935 states, 9168 states have (on average 1.6140924956369982) internal successors, (14798), 9203 states have internal predecessors, (14798), 535 states have call successors, (535), 199 states have call predecessors, (535), 230 states have return successors, (808), 564 states have call predecessors, (808), 533 states have call successors, (808) [2021-12-17 19:06:39,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9935 states to 9935 states and 16141 transitions. [2021-12-17 19:06:39,249 INFO L78 Accepts]: Start accepts. Automaton has 9935 states and 16141 transitions. Word has length 124 [2021-12-17 19:06:39,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:06:39,249 INFO L470 AbstractCegarLoop]: Abstraction has 9935 states and 16141 transitions. [2021-12-17 19:06:39,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:06:39,249 INFO L276 IsEmpty]: Start isEmpty. Operand 9935 states and 16141 transitions. [2021-12-17 19:06:39,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-17 19:06:39,254 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:06:39,255 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] [2021-12-17 19:06:39,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 19:06:39,255 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:06:39,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:06:39,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1077780713, now seen corresponding path program 1 times [2021-12-17 19:06:39,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:06:39,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582183527] [2021-12-17 19:06:39,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:06:39,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:06:39,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:39,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:06:39,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:39,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 19:06:39,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:39,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 19:06:39,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:39,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 19:06:39,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:39,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 19:06:39,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:39,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:06:39,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:06:39,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582183527] [2021-12-17 19:06:39,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582183527] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:06:39,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:06:39,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:06:39,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233785773] [2021-12-17 19:06:39,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:06:39,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:06:39,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:06:39,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:06:39,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:06:39,362 INFO L87 Difference]: Start difference. First operand 9935 states and 16141 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:06:42,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:06:42,022 INFO L93 Difference]: Finished difference Result 32914 states and 52307 transitions. [2021-12-17 19:06:42,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 19:06:42,022 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2021-12-17 19:06:42,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:06:42,092 INFO L225 Difference]: With dead ends: 32914 [2021-12-17 19:06:42,092 INFO L226 Difference]: Without dead ends: 25115 [2021-12-17 19:06:42,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-17 19:06:42,118 INFO L933 BasicCegarLoop]: 4694 mSDtfsCounter, 4989 mSDsluCounter, 17184 mSDsCounter, 0 mSdLazyCounter, 2204 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5002 SdHoareTripleChecker+Valid, 21878 SdHoareTripleChecker+Invalid, 2282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-17 19:06:42,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5002 Valid, 21878 Invalid, 2282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2204 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-17 19:06:42,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25115 states. [2021-12-17 19:06:42,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25115 to 17205. [2021-12-17 19:06:42,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17205 states, 15734 states have (on average 1.5768399644082878) internal successors, (24810), 15801 states have internal predecessors, (24810), 1015 states have call successors, (1015), 391 states have call predecessors, (1015), 454 states have return successors, (1806), 1076 states have call predecessors, (1806), 1013 states have call successors, (1806) [2021-12-17 19:06:42,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17205 states to 17205 states and 27631 transitions. [2021-12-17 19:06:42,753 INFO L78 Accepts]: Start accepts. Automaton has 17205 states and 27631 transitions. Word has length 124 [2021-12-17 19:06:42,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:06:42,753 INFO L470 AbstractCegarLoop]: Abstraction has 17205 states and 27631 transitions. [2021-12-17 19:06:42,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:06:42,753 INFO L276 IsEmpty]: Start isEmpty. Operand 17205 states and 27631 transitions. [2021-12-17 19:06:42,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-17 19:06:42,761 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:06:42,761 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] [2021-12-17 19:06:42,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 19:06:42,762 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:06:42,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:06:42,762 INFO L85 PathProgramCache]: Analyzing trace with hash 523290393, now seen corresponding path program 1 times [2021-12-17 19:06:42,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:06:42,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240107068] [2021-12-17 19:06:42,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:06:42,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:06:42,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:42,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:06:42,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:42,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 19:06:42,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:42,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 19:06:42,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:42,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 19:06:42,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:42,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 19:06:42,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:42,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:06:42,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:06:42,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240107068] [2021-12-17 19:06:42,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240107068] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:06:42,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:06:42,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:06:42,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419955860] [2021-12-17 19:06:42,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:06:42,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:06:42,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:06:42,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:06:42,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:06:42,842 INFO L87 Difference]: Start difference. First operand 17205 states and 27631 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:06:44,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:06:44,722 INFO L93 Difference]: Finished difference Result 36890 states and 59388 transitions. [2021-12-17 19:06:44,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:06:44,722 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2021-12-17 19:06:44,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:06:44,807 INFO L225 Difference]: With dead ends: 36890 [2021-12-17 19:06:44,807 INFO L226 Difference]: Without dead ends: 21821 [2021-12-17 19:06:44,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 19:06:44,841 INFO L933 BasicCegarLoop]: 4351 mSDtfsCounter, 4679 mSDsluCounter, 16478 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4694 SdHoareTripleChecker+Valid, 20829 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 19:06:44,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4694 Valid, 20829 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 19:06:44,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21821 states. [2021-12-17 19:06:45,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21821 to 17205. [2021-12-17 19:06:45,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17205 states, 15734 states have (on average 1.5727087835261218) internal successors, (24745), 15801 states have internal predecessors, (24745), 1015 states have call successors, (1015), 391 states have call predecessors, (1015), 454 states have return successors, (1806), 1076 states have call predecessors, (1806), 1013 states have call successors, (1806) [2021-12-17 19:06:45,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17205 states to 17205 states and 27566 transitions. [2021-12-17 19:06:45,580 INFO L78 Accepts]: Start accepts. Automaton has 17205 states and 27566 transitions. Word has length 124 [2021-12-17 19:06:45,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:06:45,580 INFO L470 AbstractCegarLoop]: Abstraction has 17205 states and 27566 transitions. [2021-12-17 19:06:45,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:06:45,581 INFO L276 IsEmpty]: Start isEmpty. Operand 17205 states and 27566 transitions. [2021-12-17 19:06:45,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-17 19:06:45,590 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:06:45,590 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] [2021-12-17 19:06:45,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 19:06:45,590 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:06:45,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:06:45,591 INFO L85 PathProgramCache]: Analyzing trace with hash -533440809, now seen corresponding path program 1 times [2021-12-17 19:06:45,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:06:45,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574344917] [2021-12-17 19:06:45,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:06:45,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:06:45,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:45,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:06:45,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:45,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 19:06:45,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:45,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 19:06:45,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:45,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 19:06:45,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:45,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 19:06:45,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:45,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:06:45,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:06:45,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574344917] [2021-12-17 19:06:45,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574344917] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:06:45,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:06:45,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:06:45,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710428300] [2021-12-17 19:06:45,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:06:45,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:06:45,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:06:45,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:06:45,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:06:45,668 INFO L87 Difference]: Start difference. First operand 17205 states and 27566 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:06:48,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:06:48,999 INFO L93 Difference]: Finished difference Result 60056 states and 95331 transitions. [2021-12-17 19:06:49,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 19:06:49,000 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2021-12-17 19:06:49,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:06:49,129 INFO L225 Difference]: With dead ends: 60056 [2021-12-17 19:06:49,129 INFO L226 Difference]: Without dead ends: 44987 [2021-12-17 19:06:49,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-17 19:06:49,170 INFO L933 BasicCegarLoop]: 4576 mSDtfsCounter, 5093 mSDsluCounter, 17187 mSDsCounter, 0 mSdLazyCounter, 1854 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5115 SdHoareTripleChecker+Valid, 21763 SdHoareTripleChecker+Invalid, 1935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-17 19:06:49,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5115 Valid, 21763 Invalid, 1935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1854 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-17 19:06:49,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44987 states. [2021-12-17 19:06:50,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44987 to 32091. [2021-12-17 19:06:50,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32091 states, 29244 states have (on average 1.5512583777868965) internal successors, (45365), 29375 states have internal predecessors, (45365), 1943 states have call successors, (1943), 775 states have call predecessors, (1943), 902 states have return successors, (4256), 2068 states have call predecessors, (4256), 1941 states have call successors, (4256) [2021-12-17 19:06:50,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32091 states to 32091 states and 51564 transitions. [2021-12-17 19:06:50,663 INFO L78 Accepts]: Start accepts. Automaton has 32091 states and 51564 transitions. Word has length 124 [2021-12-17 19:06:50,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:06:50,663 INFO L470 AbstractCegarLoop]: Abstraction has 32091 states and 51564 transitions. [2021-12-17 19:06:50,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:06:50,663 INFO L276 IsEmpty]: Start isEmpty. Operand 32091 states and 51564 transitions. [2021-12-17 19:06:50,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-17 19:06:50,677 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:06:50,677 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] [2021-12-17 19:06:50,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 19:06:50,678 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:06:50,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:06:50,678 INFO L85 PathProgramCache]: Analyzing trace with hash 817944409, now seen corresponding path program 1 times [2021-12-17 19:06:50,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:06:50,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240361407] [2021-12-17 19:06:50,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:06:50,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:06:50,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:50,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:06:50,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:50,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 19:06:50,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:50,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 19:06:50,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:50,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 19:06:50,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:50,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 19:06:50,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:50,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:06:50,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:06:50,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240361407] [2021-12-17 19:06:50,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240361407] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:06:50,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:06:50,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:06:50,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886993961] [2021-12-17 19:06:50,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:06:50,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:06:50,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:06:50,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:06:50,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:06:50,751 INFO L87 Difference]: Start difference. First operand 32091 states and 51564 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:06:53,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:06:53,347 INFO L93 Difference]: Finished difference Result 70626 states and 114751 transitions. [2021-12-17 19:06:53,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:06:53,347 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2021-12-17 19:06:53,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:06:53,469 INFO L225 Difference]: With dead ends: 70626 [2021-12-17 19:06:53,469 INFO L226 Difference]: Without dead ends: 40671 [2021-12-17 19:06:53,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 19:06:53,535 INFO L933 BasicCegarLoop]: 4344 mSDtfsCounter, 4678 mSDsluCounter, 16478 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4693 SdHoareTripleChecker+Valid, 20822 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 19:06:53,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4693 Valid, 20822 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 880 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 19:06:53,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40671 states. [2021-12-17 19:06:55,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40671 to 32091. [2021-12-17 19:06:55,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32091 states, 29244 states have (on average 1.5468472165230474) internal successors, (45236), 29375 states have internal predecessors, (45236), 1943 states have call successors, (1943), 775 states have call predecessors, (1943), 902 states have return successors, (4256), 2068 states have call predecessors, (4256), 1941 states have call successors, (4256) [2021-12-17 19:06:55,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32091 states to 32091 states and 51435 transitions. [2021-12-17 19:06:55,170 INFO L78 Accepts]: Start accepts. Automaton has 32091 states and 51435 transitions. Word has length 124 [2021-12-17 19:06:55,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:06:55,172 INFO L470 AbstractCegarLoop]: Abstraction has 32091 states and 51435 transitions. [2021-12-17 19:06:55,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:06:55,172 INFO L276 IsEmpty]: Start isEmpty. Operand 32091 states and 51435 transitions. [2021-12-17 19:06:55,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-17 19:06:55,222 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:06:55,223 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] [2021-12-17 19:06:55,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-17 19:06:55,223 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:06:55,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:06:55,223 INFO L85 PathProgramCache]: Analyzing trace with hash -801030505, now seen corresponding path program 1 times [2021-12-17 19:06:55,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:06:55,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845604123] [2021-12-17 19:06:55,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:06:55,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:06:55,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:55,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:06:55,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:55,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 19:06:55,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:55,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 19:06:55,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:55,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 19:06:55,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:55,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 19:06:55,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:55,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:06:55,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:06:55,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845604123] [2021-12-17 19:06:55,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845604123] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:06:55,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:06:55,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:06:55,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772772490] [2021-12-17 19:06:55,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:06:55,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:06:55,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:06:55,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:06:55,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:06:55,350 INFO L87 Difference]: Start difference. First operand 32091 states and 51435 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:06:57,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:06:57,968 INFO L93 Difference]: Finished difference Result 70496 states and 114104 transitions. [2021-12-17 19:06:57,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:06:57,969 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2021-12-17 19:06:57,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:06:58,090 INFO L225 Difference]: With dead ends: 70496 [2021-12-17 19:06:58,090 INFO L226 Difference]: Without dead ends: 40541 [2021-12-17 19:06:58,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 19:06:58,153 INFO L933 BasicCegarLoop]: 4338 mSDtfsCounter, 4678 mSDsluCounter, 16478 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4693 SdHoareTripleChecker+Valid, 20816 SdHoareTripleChecker+Invalid, 949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 19:06:58,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4693 Valid, 20816 Invalid, 949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 19:06:58,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40541 states. [2021-12-17 19:06:59,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40541 to 32091. [2021-12-17 19:06:59,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32091 states, 29244 states have (on average 1.5424360552591985) internal successors, (45107), 29375 states have internal predecessors, (45107), 1943 states have call successors, (1943), 775 states have call predecessors, (1943), 902 states have return successors, (4256), 2068 states have call predecessors, (4256), 1941 states have call successors, (4256) [2021-12-17 19:06:59,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32091 states to 32091 states and 51306 transitions. [2021-12-17 19:06:59,900 INFO L78 Accepts]: Start accepts. Automaton has 32091 states and 51306 transitions. Word has length 124 [2021-12-17 19:06:59,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:06:59,900 INFO L470 AbstractCegarLoop]: Abstraction has 32091 states and 51306 transitions. [2021-12-17 19:06:59,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:06:59,901 INFO L276 IsEmpty]: Start isEmpty. Operand 32091 states and 51306 transitions. [2021-12-17 19:06:59,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-17 19:06:59,913 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:06:59,914 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] [2021-12-17 19:06:59,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-17 19:06:59,914 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:06:59,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:06:59,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1684539495, now seen corresponding path program 1 times [2021-12-17 19:06:59,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:06:59,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053787267] [2021-12-17 19:06:59,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:06:59,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:06:59,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:59,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:06:59,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:59,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 19:06:59,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:59,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 19:06:59,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:59,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 19:06:59,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:59,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 19:06:59,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:59,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:06:59,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:06:59,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053787267] [2021-12-17 19:06:59,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053787267] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:06:59,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:06:59,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:06:59,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373762999] [2021-12-17 19:06:59,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:06:59,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:06:59,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:06:59,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:06:59,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:06:59,986 INFO L87 Difference]: Start difference. First operand 32091 states and 51306 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:05,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:05,191 INFO L93 Difference]: Finished difference Result 109310 states and 175151 transitions. [2021-12-17 19:07:05,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 19:07:05,192 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2021-12-17 19:07:05,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:05,405 INFO L225 Difference]: With dead ends: 109310 [2021-12-17 19:07:05,405 INFO L226 Difference]: Without dead ends: 79355 [2021-12-17 19:07:05,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-17 19:07:05,482 INFO L933 BasicCegarLoop]: 4554 mSDtfsCounter, 4921 mSDsluCounter, 17187 mSDsCounter, 0 mSdLazyCounter, 1792 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4943 SdHoareTripleChecker+Valid, 21741 SdHoareTripleChecker+Invalid, 1874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:05,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4943 Valid, 21741 Invalid, 1874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1792 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 19:07:05,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79355 states. [2021-12-17 19:07:08,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79355 to 62183. [2021-12-17 19:07:08,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62183 states, 56648 states have (on average 1.5299216212399378) internal successors, (86667), 56907 states have internal predecessors, (86667), 3735 states have call successors, (3735), 1543 states have call predecessors, (3735), 1798 states have return successors, (10550), 3988 states have call predecessors, (10550), 3733 states have call successors, (10550) [2021-12-17 19:07:08,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62183 states to 62183 states and 100952 transitions. [2021-12-17 19:07:08,627 INFO L78 Accepts]: Start accepts. Automaton has 62183 states and 100952 transitions. Word has length 124 [2021-12-17 19:07:08,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:07:08,627 INFO L470 AbstractCegarLoop]: Abstraction has 62183 states and 100952 transitions. [2021-12-17 19:07:08,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:08,628 INFO L276 IsEmpty]: Start isEmpty. Operand 62183 states and 100952 transitions. [2021-12-17 19:07:08,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-17 19:07:08,655 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:08,655 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] [2021-12-17 19:07:08,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-17 19:07:08,656 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:08,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:08,656 INFO L85 PathProgramCache]: Analyzing trace with hash 669845787, now seen corresponding path program 1 times [2021-12-17 19:07:08,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:08,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831601175] [2021-12-17 19:07:08,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:08,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:08,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:08,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:08,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:08,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 19:07:08,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:08,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 19:07:08,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:08,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 19:07:08,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:08,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 19:07:08,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:08,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:08,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:08,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831601175] [2021-12-17 19:07:08,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831601175] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:08,793 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:08,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 19:07:08,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370458996] [2021-12-17 19:07:08,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:08,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 19:07:08,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:08,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 19:07:08,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 19:07:08,795 INFO L87 Difference]: Start difference. First operand 62183 states and 100952 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:15,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:15,674 INFO L93 Difference]: Finished difference Result 174433 states and 280480 transitions. [2021-12-17 19:07:15,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 19:07:15,675 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2021-12-17 19:07:15,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:16,035 INFO L225 Difference]: With dead ends: 174433 [2021-12-17 19:07:16,036 INFO L226 Difference]: Without dead ends: 114387 [2021-12-17 19:07:16,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-17 19:07:16,370 INFO L933 BasicCegarLoop]: 4740 mSDtfsCounter, 5203 mSDsluCounter, 12722 mSDsCounter, 0 mSdLazyCounter, 1496 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5238 SdHoareTripleChecker+Valid, 17462 SdHoareTripleChecker+Invalid, 1607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:16,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5238 Valid, 17462 Invalid, 1607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1496 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 19:07:16,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114387 states.