./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label45+token_ring.09.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label45+token_ring.09.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 b445a4f49d9151eb44c8190083d36f280681906d4dfab457d725a1f68c1551d8 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 08:20:29,960 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 08:20:29,962 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 08:20:30,005 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 08:20:30,009 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 08:20:30,010 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 08:20:30,015 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 08:20:30,019 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 08:20:30,021 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 08:20:30,026 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 08:20:30,027 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 08:20:30,029 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 08:20:30,030 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 08:20:30,032 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 08:20:30,033 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 08:20:30,034 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 08:20:30,035 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 08:20:30,037 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 08:20:30,040 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 08:20:30,042 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 08:20:30,046 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 08:20:30,047 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 08:20:30,048 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 08:20:30,049 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 08:20:30,050 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 08:20:30,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 08:20:30,054 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 08:20:30,055 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 08:20:30,056 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 08:20:30,056 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 08:20:30,057 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 08:20:30,057 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 08:20:30,059 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 08:20:30,059 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 08:20:30,060 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 08:20:30,060 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 08:20:30,061 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 08:20:30,061 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 08:20:30,061 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 08:20:30,062 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 08:20:30,062 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 08:20:30,064 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 08:20:30,065 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 08:20:30,097 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 08:20:30,098 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 08:20:30,098 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 08:20:30,098 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 08:20:30,099 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 08:20:30,099 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 08:20:30,100 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 08:20:30,100 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 08:20:30,100 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 08:20:30,101 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 08:20:30,101 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 08:20:30,101 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 08:20:30,101 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 08:20:30,102 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 08:20:30,102 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 08:20:30,107 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 08:20:30,107 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 08:20:30,108 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 08:20:30,109 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 08:20:30,109 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 08:20:30,110 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 08:20:30,110 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 08:20:30,110 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 08:20:30,110 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 08:20:30,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 08:20:30,111 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 08:20:30,111 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 08:20:30,111 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 08:20:30,111 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 08:20:30,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 08:20:30,112 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 08:20:30,112 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 08:20:30,112 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 08:20:30,112 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b445a4f49d9151eb44c8190083d36f280681906d4dfab457d725a1f68c1551d8 [2022-07-12 08:20:30,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 08:20:30,343 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 08:20:30,346 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 08:20:30,346 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 08:20:30,347 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 08:20:30,348 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label45+token_ring.09.cil-2.c [2022-07-12 08:20:30,418 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/daf3a2be0/4bca9767401944f4989d80db93cf0d7c/FLAG24083c195 [2022-07-12 08:20:31,075 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 08:20:31,075 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.09.cil-2.c [2022-07-12 08:20:31,103 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/daf3a2be0/4bca9767401944f4989d80db93cf0d7c/FLAG24083c195 [2022-07-12 08:20:31,169 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/daf3a2be0/4bca9767401944f4989d80db93cf0d7c [2022-07-12 08:20:31,171 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 08:20:31,173 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 08:20:31,173 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 08:20:31,173 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 08:20:31,176 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 08:20:31,176 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 08:20:31" (1/1) ... [2022-07-12 08:20:31,177 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bcd7d8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:20:31, skipping insertion in model container [2022-07-12 08:20:31,177 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 08:20:31" (1/1) ... [2022-07-12 08:20:31,181 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 08:20:31,302 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 08:20:32,497 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.09.cil-2.c[380323,380336] [2022-07-12 08:20:32,515 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.09.cil-2.c[383339,383352] [2022-07-12 08:20:32,650 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 08:20:32,657 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 08:20:33,234 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.09.cil-2.c[380323,380336] [2022-07-12 08:20:33,237 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.09.cil-2.c[383339,383352] [2022-07-12 08:20:33,259 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 08:20:33,300 INFO L208 MainTranslator]: Completed translation [2022-07-12 08:20:33,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:20:33 WrapperNode [2022-07-12 08:20:33,301 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 08:20:33,302 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 08:20:33,302 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 08:20:33,302 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 08:20:33,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:20:33" (1/1) ... [2022-07-12 08:20:33,416 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:20:33" (1/1) ... [2022-07-12 08:20:33,690 INFO L137 Inliner]: procedures = 62, calls = 69, calls flagged for inlining = 39, calls inlined = 39, statements flattened = 13030 [2022-07-12 08:20:33,691 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 08:20:33,691 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 08:20:33,692 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 08:20:33,692 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 08:20:33,698 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:20:33" (1/1) ... [2022-07-12 08:20:33,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:20:33" (1/1) ... [2022-07-12 08:20:33,826 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:20:33" (1/1) ... [2022-07-12 08:20:33,827 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:20:33" (1/1) ... [2022-07-12 08:20:33,965 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:20:33" (1/1) ... [2022-07-12 08:20:34,037 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:20:33" (1/1) ... [2022-07-12 08:20:34,085 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:20:33" (1/1) ... [2022-07-12 08:20:34,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 08:20:34,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 08:20:34,201 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 08:20:34,201 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 08:20:34,203 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:20:33" (1/1) ... [2022-07-12 08:20:34,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 08:20:34,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 08:20:34,268 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 08:20:34,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 08:20:34,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 08:20:34,311 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-12 08:20:34,311 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-12 08:20:34,311 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-12 08:20:34,311 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-12 08:20:34,311 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-12 08:20:34,311 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-12 08:20:34,312 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-07-12 08:20:34,312 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-07-12 08:20:34,312 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-12 08:20:34,312 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-12 08:20:34,312 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-12 08:20:34,312 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-12 08:20:34,312 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-12 08:20:34,312 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-12 08:20:34,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 08:20:34,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 08:20:34,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 08:20:34,411 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 08:20:34,413 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 08:20:38,994 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 08:20:39,013 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 08:20:39,014 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2022-07-12 08:20:39,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 08:20:39 BoogieIcfgContainer [2022-07-12 08:20:39,017 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 08:20:39,018 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 08:20:39,019 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 08:20:39,021 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 08:20:39,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 08:20:31" (1/3) ... [2022-07-12 08:20:39,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c55d123 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 08:20:39, skipping insertion in model container [2022-07-12 08:20:39,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:20:33" (2/3) ... [2022-07-12 08:20:39,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c55d123 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 08:20:39, skipping insertion in model container [2022-07-12 08:20:39,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 08:20:39" (3/3) ... [2022-07-12 08:20:39,023 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.09.cil-2.c [2022-07-12 08:20:39,033 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 08:20:39,033 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 08:20:39,092 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 08:20:39,097 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@36d1b22e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@267fbc00 [2022-07-12 08:20:39,097 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 08:20:39,107 INFO L276 IsEmpty]: Start isEmpty. Operand has 2498 states, 2463 states have (on average 1.847340641494113) internal successors, (4550), 2468 states have internal predecessors, (4550), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2022-07-12 08:20:39,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-12 08:20:39,120 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:20:39,120 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:20:39,121 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:20:39,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:20:39,124 INFO L85 PathProgramCache]: Analyzing trace with hash 416596476, now seen corresponding path program 1 times [2022-07-12 08:20:39,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:20:39,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851459930] [2022-07-12 08:20:39,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:20:39,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:20:39,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:39,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:20:39,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:39,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 08:20:39,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:39,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 08:20:39,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:39,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 08:20:39,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:39,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 08:20:39,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:39,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:20:39,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:20:39,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851459930] [2022-07-12 08:20:39,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851459930] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:20:39,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:20:39,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 08:20:39,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954196735] [2022-07-12 08:20:39,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:20:39,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 08:20:39,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:20:39,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 08:20:39,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 08:20:39,448 INFO L87 Difference]: Start difference. First operand has 2498 states, 2463 states have (on average 1.847340641494113) internal successors, (4550), 2468 states have internal predecessors, (4550), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:20:40,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:20:40,600 INFO L93 Difference]: Finished difference Result 5096 states and 9373 transitions. [2022-07-12 08:20:40,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 08:20:40,603 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 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 146 [2022-07-12 08:20:40,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:20:40,623 INFO L225 Difference]: With dead ends: 5096 [2022-07-12 08:20:40,623 INFO L226 Difference]: Without dead ends: 2539 [2022-07-12 08:20:40,631 INFO L412 NwaCegarLoop]: 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 [2022-07-12 08:20:40,634 INFO L413 NwaCegarLoop]: 4557 mSDtfsCounter, 821 mSDsluCounter, 12405 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 16962 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 08:20:40,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 16962 Invalid, 622 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [58 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 08:20:40,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2539 states. [2022-07-12 08:20:40,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2539 to 2430. [2022-07-12 08:20:40,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2430 states, 2397 states have (on average 1.8327075511055486) internal successors, (4393), 2400 states have internal predecessors, (4393), 25 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-07-12 08:20:40,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2430 states to 2430 states and 4441 transitions. [2022-07-12 08:20:40,739 INFO L78 Accepts]: Start accepts. Automaton has 2430 states and 4441 transitions. Word has length 146 [2022-07-12 08:20:40,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:20:40,739 INFO L495 AbstractCegarLoop]: Abstraction has 2430 states and 4441 transitions. [2022-07-12 08:20:40,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:20:40,740 INFO L276 IsEmpty]: Start isEmpty. Operand 2430 states and 4441 transitions. [2022-07-12 08:20:40,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-12 08:20:40,743 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:20:40,743 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:20:40,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 08:20:40,744 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:20:40,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:20:40,744 INFO L85 PathProgramCache]: Analyzing trace with hash -982357126, now seen corresponding path program 1 times [2022-07-12 08:20:40,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:20:40,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947521327] [2022-07-12 08:20:40,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:20:40,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:20:40,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:40,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:20:40,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:40,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 08:20:40,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:40,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 08:20:41,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:41,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 08:20:41,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:41,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 08:20:41,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:41,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:20:41,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:20:41,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947521327] [2022-07-12 08:20:41,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947521327] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:20:41,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:20:41,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 08:20:41,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675238516] [2022-07-12 08:20:41,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:20:41,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 08:20:41,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:20:41,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 08:20:41,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 08:20:41,051 INFO L87 Difference]: Start difference. First operand 2430 states and 4441 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:20:42,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:20:42,922 INFO L93 Difference]: Finished difference Result 3244 states and 5752 transitions. [2022-07-12 08:20:42,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 08:20:42,923 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 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 146 [2022-07-12 08:20:42,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:20:42,935 INFO L225 Difference]: With dead ends: 3244 [2022-07-12 08:20:42,935 INFO L226 Difference]: Without dead ends: 2952 [2022-07-12 08:20:42,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-12 08:20:42,938 INFO L413 NwaCegarLoop]: 4528 mSDtfsCounter, 5181 mSDsluCounter, 12667 mSDsCounter, 0 mSdLazyCounter, 1581 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5197 SdHoareTripleChecker+Valid, 17195 SdHoareTripleChecker+Invalid, 1693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-12 08:20:42,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5197 Valid, 17195 Invalid, 1693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1581 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-12 08:20:42,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2022-07-12 08:20:42,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 2733. [2022-07-12 08:20:42,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2733 states, 2675 states have (on average 1.8078504672897195) internal successors, (4836), 2679 states have internal predecessors, (4836), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2022-07-12 08:20:43,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2733 states to 2733 states and 4923 transitions. [2022-07-12 08:20:43,001 INFO L78 Accepts]: Start accepts. Automaton has 2733 states and 4923 transitions. Word has length 146 [2022-07-12 08:20:43,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:20:43,001 INFO L495 AbstractCegarLoop]: Abstraction has 2733 states and 4923 transitions. [2022-07-12 08:20:43,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:20:43,002 INFO L276 IsEmpty]: Start isEmpty. Operand 2733 states and 4923 transitions. [2022-07-12 08:20:43,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-12 08:20:43,004 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:20:43,004 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:20:43,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 08:20:43,005 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:20:43,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:20:43,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1511144566, now seen corresponding path program 1 times [2022-07-12 08:20:43,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:20:43,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895281879] [2022-07-12 08:20:43,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:20:43,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:20:43,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:43,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:20:43,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:43,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 08:20:43,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:43,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 08:20:43,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:43,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 08:20:43,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:43,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 08:20:43,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:43,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:20:43,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:20:43,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895281879] [2022-07-12 08:20:43,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895281879] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:20:43,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:20:43,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:20:43,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246831777] [2022-07-12 08:20:43,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:20:43,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:20:43,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:20:43,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:20:43,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:20:43,134 INFO L87 Difference]: Start difference. First operand 2733 states and 4923 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:20:45,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:20:45,349 INFO L93 Difference]: Finished difference Result 3972 states and 6919 transitions. [2022-07-12 08:20:45,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:20:45,349 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2022-07-12 08:20:45,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:20:45,360 INFO L225 Difference]: With dead ends: 3972 [2022-07-12 08:20:45,360 INFO L226 Difference]: Without dead ends: 3377 [2022-07-12 08:20:45,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:20:45,363 INFO L413 NwaCegarLoop]: 4773 mSDtfsCounter, 5201 mSDsluCounter, 17403 mSDsCounter, 0 mSdLazyCounter, 2459 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5217 SdHoareTripleChecker+Valid, 22176 SdHoareTripleChecker+Invalid, 2537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-12 08:20:45,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5217 Valid, 22176 Invalid, 2537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2459 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-12 08:20:45,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3377 states. [2022-07-12 08:20:45,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3377 to 3015. [2022-07-12 08:20:45,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3015 states, 2932 states have (on average 1.7861527967257844) internal successors, (5237), 2937 states have internal predecessors, (5237), 61 states have call successors, (61), 19 states have call predecessors, (61), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2022-07-12 08:20:45,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3015 states to 3015 states and 5362 transitions. [2022-07-12 08:20:45,432 INFO L78 Accepts]: Start accepts. Automaton has 3015 states and 5362 transitions. Word has length 146 [2022-07-12 08:20:45,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:20:45,432 INFO L495 AbstractCegarLoop]: Abstraction has 3015 states and 5362 transitions. [2022-07-12 08:20:45,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:20:45,433 INFO L276 IsEmpty]: Start isEmpty. Operand 3015 states and 5362 transitions. [2022-07-12 08:20:45,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-12 08:20:45,436 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:20:45,436 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:20:45,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 08:20:45,437 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:20:45,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:20:45,437 INFO L85 PathProgramCache]: Analyzing trace with hash 804547960, now seen corresponding path program 1 times [2022-07-12 08:20:45,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:20:45,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799614337] [2022-07-12 08:20:45,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:20:45,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:20:45,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:45,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:20:45,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:45,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 08:20:45,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:45,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 08:20:45,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:45,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 08:20:45,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:45,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 08:20:45,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:45,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:20:45,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:20:45,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799614337] [2022-07-12 08:20:45,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799614337] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:20:45,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:20:45,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:20:45,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020508232] [2022-07-12 08:20:45,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:20:45,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:20:45,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:20:45,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:20:45,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:20:45,569 INFO L87 Difference]: Start difference. First operand 3015 states and 5362 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:20:47,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:20:47,791 INFO L93 Difference]: Finished difference Result 5044 states and 8626 transitions. [2022-07-12 08:20:47,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:20:47,792 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2022-07-12 08:20:47,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:20:47,806 INFO L225 Difference]: With dead ends: 5044 [2022-07-12 08:20:47,806 INFO L226 Difference]: Without dead ends: 4167 [2022-07-12 08:20:47,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:20:47,810 INFO L413 NwaCegarLoop]: 4761 mSDtfsCounter, 5195 mSDsluCounter, 17403 mSDsCounter, 0 mSdLazyCounter, 2448 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5211 SdHoareTripleChecker+Valid, 22164 SdHoareTripleChecker+Invalid, 2528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-12 08:20:47,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5211 Valid, 22164 Invalid, 2528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2448 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-12 08:20:47,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4167 states. [2022-07-12 08:20:47,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4167 to 3583. [2022-07-12 08:20:47,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3583 states, 3450 states have (on average 1.752463768115942) internal successors, (6046), 3457 states have internal predecessors, (6046), 97 states have call successors, (97), 31 states have call predecessors, (97), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2022-07-12 08:20:47,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3583 states to 3583 states and 6251 transitions. [2022-07-12 08:20:47,933 INFO L78 Accepts]: Start accepts. Automaton has 3583 states and 6251 transitions. Word has length 146 [2022-07-12 08:20:47,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:20:47,937 INFO L495 AbstractCegarLoop]: Abstraction has 3583 states and 6251 transitions. [2022-07-12 08:20:47,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:20:47,938 INFO L276 IsEmpty]: Start isEmpty. Operand 3583 states and 6251 transitions. [2022-07-12 08:20:47,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-12 08:20:47,939 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:20:47,940 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:20:47,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 08:20:47,940 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:20:47,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:20:47,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1666381562, now seen corresponding path program 1 times [2022-07-12 08:20:47,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:20:47,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166362919] [2022-07-12 08:20:47,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:20:47,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:20:47,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:47,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:20:47,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:47,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 08:20:48,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:48,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 08:20:48,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:48,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 08:20:48,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:48,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 08:20:48,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:48,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:20:48,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:20:48,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166362919] [2022-07-12 08:20:48,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166362919] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:20:48,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:20:48,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:20:48,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630000287] [2022-07-12 08:20:48,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:20:48,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:20:48,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:20:48,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:20:48,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:20:48,062 INFO L87 Difference]: Start difference. First operand 3583 states and 6251 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:20:50,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:20:50,444 INFO L93 Difference]: Finished difference Result 7114 states and 11903 transitions. [2022-07-12 08:20:50,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:20:50,445 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2022-07-12 08:20:50,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:20:50,464 INFO L225 Difference]: With dead ends: 7114 [2022-07-12 08:20:50,464 INFO L226 Difference]: Without dead ends: 5669 [2022-07-12 08:20:50,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:20:50,470 INFO L413 NwaCegarLoop]: 4756 mSDtfsCounter, 5194 mSDsluCounter, 17403 mSDsCounter, 0 mSdLazyCounter, 2440 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5210 SdHoareTripleChecker+Valid, 22159 SdHoareTripleChecker+Invalid, 2520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-12 08:20:50,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5210 Valid, 22159 Invalid, 2520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2440 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-12 08:20:50,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5669 states. [2022-07-12 08:20:50,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5669 to 4720. [2022-07-12 08:20:50,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4720 states, 4487 states have (on average 1.70804546467573) internal successors, (7664), 4498 states have internal predecessors, (7664), 169 states have call successors, (169), 55 states have call predecessors, (169), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2022-07-12 08:20:50,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4720 states to 4720 states and 8035 transitions. [2022-07-12 08:20:50,623 INFO L78 Accepts]: Start accepts. Automaton has 4720 states and 8035 transitions. Word has length 146 [2022-07-12 08:20:50,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:20:50,623 INFO L495 AbstractCegarLoop]: Abstraction has 4720 states and 8035 transitions. [2022-07-12 08:20:50,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:20:50,624 INFO L276 IsEmpty]: Start isEmpty. Operand 4720 states and 8035 transitions. [2022-07-12 08:20:50,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-12 08:20:50,626 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:20:50,627 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:20:50,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 08:20:50,627 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:20:50,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:20:50,628 INFO L85 PathProgramCache]: Analyzing trace with hash -384027336, now seen corresponding path program 1 times [2022-07-12 08:20:50,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:20:50,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41468650] [2022-07-12 08:20:50,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:20:50,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:20:50,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:50,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:20:50,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:50,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 08:20:50,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:50,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 08:20:50,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:50,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 08:20:50,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:50,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 08:20:50,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:50,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:20:50,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:20:50,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41468650] [2022-07-12 08:20:50,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41468650] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:20:50,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:20:50,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:20:50,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843949390] [2022-07-12 08:20:50,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:20:50,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:20:50,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:20:50,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:20:50,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:20:50,741 INFO L87 Difference]: Start difference. First operand 4720 states and 8035 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:20:53,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:20:53,037 INFO L93 Difference]: Finished difference Result 11253 states and 18473 transitions. [2022-07-12 08:20:53,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:20:53,037 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2022-07-12 08:20:53,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:20:53,063 INFO L225 Difference]: With dead ends: 11253 [2022-07-12 08:20:53,063 INFO L226 Difference]: Without dead ends: 8671 [2022-07-12 08:20:53,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:20:53,072 INFO L413 NwaCegarLoop]: 4751 mSDtfsCounter, 5193 mSDsluCounter, 17403 mSDsCounter, 0 mSdLazyCounter, 2432 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5209 SdHoareTripleChecker+Valid, 22154 SdHoareTripleChecker+Invalid, 2512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-12 08:20:53,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5209 Valid, 22154 Invalid, 2512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2432 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-12 08:20:53,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8671 states. [2022-07-12 08:20:53,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8671 to 7001. [2022-07-12 08:20:53,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7001 states, 6568 states have (on average 1.6610840438489647) internal successors, (10910), 6587 states have internal predecessors, (10910), 313 states have call successors, (313), 103 states have call predecessors, (313), 118 states have return successors, (408), 326 states have call predecessors, (408), 311 states have call successors, (408) [2022-07-12 08:20:53,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7001 states to 7001 states and 11631 transitions. [2022-07-12 08:20:53,306 INFO L78 Accepts]: Start accepts. Automaton has 7001 states and 11631 transitions. Word has length 146 [2022-07-12 08:20:53,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:20:53,306 INFO L495 AbstractCegarLoop]: Abstraction has 7001 states and 11631 transitions. [2022-07-12 08:20:53,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:20:53,306 INFO L276 IsEmpty]: Start isEmpty. Operand 7001 states and 11631 transitions. [2022-07-12 08:20:53,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-12 08:20:53,310 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:20:53,310 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:20:53,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 08:20:53,310 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:20:53,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:20:53,311 INFO L85 PathProgramCache]: Analyzing trace with hash 104019770, now seen corresponding path program 1 times [2022-07-12 08:20:53,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:20:53,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608413888] [2022-07-12 08:20:53,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:20:53,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:20:53,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:53,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:20:53,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:53,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 08:20:53,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:53,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 08:20:53,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:53,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 08:20:53,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:53,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 08:20:53,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:53,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:20:53,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:20:53,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608413888] [2022-07-12 08:20:53,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608413888] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:20:53,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:20:53,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:20:53,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149891022] [2022-07-12 08:20:53,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:20:53,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:20:53,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:20:53,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:20:53,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:20:53,411 INFO L87 Difference]: Start difference. First operand 7001 states and 11631 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:20:55,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:20:55,626 INFO L93 Difference]: Finished difference Result 19532 states and 31675 transitions. [2022-07-12 08:20:55,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:20:55,627 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2022-07-12 08:20:55,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:20:55,668 INFO L225 Difference]: With dead ends: 19532 [2022-07-12 08:20:55,668 INFO L226 Difference]: Without dead ends: 14669 [2022-07-12 08:20:55,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:20:55,691 INFO L413 NwaCegarLoop]: 4547 mSDtfsCounter, 5272 mSDsluCounter, 16867 mSDsCounter, 0 mSdLazyCounter, 2161 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5288 SdHoareTripleChecker+Valid, 21414 SdHoareTripleChecker+Invalid, 2275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 2161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-12 08:20:55,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5288 Valid, 21414 Invalid, 2275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 2161 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-12 08:20:55,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14669 states. [2022-07-12 08:20:56,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14669 to 11578. [2022-07-12 08:20:56,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11578 states, 10745 states have (on average 1.621591437878083) internal successors, (17424), 10780 states have internal predecessors, (17424), 601 states have call successors, (601), 199 states have call predecessors, (601), 230 states have return successors, (874), 630 states have call predecessors, (874), 599 states have call successors, (874) [2022-07-12 08:20:56,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11578 states to 11578 states and 18899 transitions. [2022-07-12 08:20:56,168 INFO L78 Accepts]: Start accepts. Automaton has 11578 states and 18899 transitions. Word has length 146 [2022-07-12 08:20:56,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:20:56,169 INFO L495 AbstractCegarLoop]: Abstraction has 11578 states and 18899 transitions. [2022-07-12 08:20:56,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:20:56,169 INFO L276 IsEmpty]: Start isEmpty. Operand 11578 states and 18899 transitions. [2022-07-12 08:20:56,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-12 08:20:56,176 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:20:56,176 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:20:56,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 08:20:56,179 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:20:56,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:20:56,180 INFO L85 PathProgramCache]: Analyzing trace with hash -988615432, now seen corresponding path program 1 times [2022-07-12 08:20:56,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:20:56,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005898885] [2022-07-12 08:20:56,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:20:56,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:20:56,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:56,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:20:56,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:56,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 08:20:56,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:56,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 08:20:56,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:56,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 08:20:56,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:56,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 08:20:56,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:56,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:20:56,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:20:56,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005898885] [2022-07-12 08:20:56,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005898885] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:20:56,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:20:56,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:20:56,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392934163] [2022-07-12 08:20:56,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:20:56,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:20:56,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:20:56,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:20:56,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:20:56,287 INFO L87 Difference]: Start difference. First operand 11578 states and 18899 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:20:57,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:20:57,919 INFO L93 Difference]: Finished difference Result 24276 states and 39482 transitions. [2022-07-12 08:20:57,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 08:20:57,920 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2022-07-12 08:20:57,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:20:57,958 INFO L225 Difference]: With dead ends: 24276 [2022-07-12 08:20:57,958 INFO L226 Difference]: Without dead ends: 14836 [2022-07-12 08:20:57,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 08:20:57,986 INFO L413 NwaCegarLoop]: 4458 mSDtfsCounter, 4979 mSDsluCounter, 12485 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4996 SdHoareTripleChecker+Valid, 16943 SdHoareTripleChecker+Invalid, 1129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 08:20:57,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4996 Valid, 16943 Invalid, 1129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 08:20:57,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14836 states. [2022-07-12 08:20:58,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14836 to 11578. [2022-07-12 08:20:58,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11578 states, 10745 states have (on average 1.6185202419730107) internal successors, (17391), 10780 states have internal predecessors, (17391), 601 states have call successors, (601), 199 states have call predecessors, (601), 230 states have return successors, (874), 630 states have call predecessors, (874), 599 states have call successors, (874) [2022-07-12 08:20:58,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11578 states to 11578 states and 18866 transitions. [2022-07-12 08:20:58,643 INFO L78 Accepts]: Start accepts. Automaton has 11578 states and 18866 transitions. Word has length 146 [2022-07-12 08:20:58,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:20:58,644 INFO L495 AbstractCegarLoop]: Abstraction has 11578 states and 18866 transitions. [2022-07-12 08:20:58,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:20:58,645 INFO L276 IsEmpty]: Start isEmpty. Operand 11578 states and 18866 transitions. [2022-07-12 08:20:58,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-12 08:20:58,650 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:20:58,650 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:20:58,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 08:20:58,651 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:20:58,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:20:58,651 INFO L85 PathProgramCache]: Analyzing trace with hash 2024179578, now seen corresponding path program 1 times [2022-07-12 08:20:58,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:20:58,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070321766] [2022-07-12 08:20:58,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:20:58,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:20:58,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:58,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:20:58,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:58,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 08:20:58,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:58,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 08:20:58,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:58,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 08:20:58,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:58,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 08:20:58,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:20:58,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:20:58,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:20:58,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070321766] [2022-07-12 08:20:58,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070321766] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:20:58,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:20:58,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:20:58,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28563328] [2022-07-12 08:20:58,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:20:58,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:20:58,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:20:58,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:20:58,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:20:58,754 INFO L87 Difference]: Start difference. First operand 11578 states and 18866 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:21:01,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:21:01,946 INFO L93 Difference]: Finished difference Result 36057 states and 58041 transitions. [2022-07-12 08:21:01,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:21:01,947 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2022-07-12 08:21:01,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:21:02,018 INFO L225 Difference]: With dead ends: 36057 [2022-07-12 08:21:02,019 INFO L226 Difference]: Without dead ends: 26617 [2022-07-12 08:21:02,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:21:02,049 INFO L413 NwaCegarLoop]: 4735 mSDtfsCounter, 5184 mSDsluCounter, 17403 mSDsCounter, 0 mSdLazyCounter, 2397 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5200 SdHoareTripleChecker+Valid, 22138 SdHoareTripleChecker+Invalid, 2477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-12 08:21:02,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5200 Valid, 22138 Invalid, 2477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2397 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-12 08:21:02,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26617 states. [2022-07-12 08:21:03,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26617 to 20796. [2022-07-12 08:21:03,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20796 states, 19163 states have (on average 1.5898867609455722) internal successors, (30467), 19230 states have internal predecessors, (30467), 1177 states have call successors, (1177), 391 states have call predecessors, (1177), 454 states have return successors, (1968), 1238 states have call predecessors, (1968), 1175 states have call successors, (1968) [2022-07-12 08:21:03,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20796 states to 20796 states and 33612 transitions. [2022-07-12 08:21:03,070 INFO L78 Accepts]: Start accepts. Automaton has 20796 states and 33612 transitions. Word has length 146 [2022-07-12 08:21:03,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:21:03,071 INFO L495 AbstractCegarLoop]: Abstraction has 20796 states and 33612 transitions. [2022-07-12 08:21:03,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:21:03,071 INFO L276 IsEmpty]: Start isEmpty. Operand 20796 states and 33612 transitions. [2022-07-12 08:21:03,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-12 08:21:03,080 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:21:03,080 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:21:03,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 08:21:03,080 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:21:03,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:21:03,081 INFO L85 PathProgramCache]: Analyzing trace with hash 181703864, now seen corresponding path program 1 times [2022-07-12 08:21:03,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:21:03,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121167542] [2022-07-12 08:21:03,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:21:03,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:21:03,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:21:03,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:21:03,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:21:03,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 08:21:03,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:21:03,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 08:21:03,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:21:03,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 08:21:03,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:21:03,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 08:21:03,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:21:03,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:21:03,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:21:03,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121167542] [2022-07-12 08:21:03,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121167542] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:21:03,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:21:03,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:21:03,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917427321] [2022-07-12 08:21:03,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:21:03,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:21:03,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:21:03,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:21:03,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:21:03,182 INFO L87 Difference]: Start difference. First operand 20796 states and 33612 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:21:07,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:21:07,635 INFO L93 Difference]: Finished difference Result 69177 states and 111649 transitions. [2022-07-12 08:21:07,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:21:07,636 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2022-07-12 08:21:07,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:21:07,801 INFO L225 Difference]: With dead ends: 69177 [2022-07-12 08:21:07,801 INFO L226 Difference]: Without dead ends: 50519 [2022-07-12 08:21:07,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:21:07,857 INFO L413 NwaCegarLoop]: 4728 mSDtfsCounter, 5186 mSDsluCounter, 17403 mSDsCounter, 0 mSdLazyCounter, 2386 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5202 SdHoareTripleChecker+Valid, 22131 SdHoareTripleChecker+Invalid, 2469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-12 08:21:07,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5202 Valid, 22131 Invalid, 2469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 2386 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-12 08:21:07,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50519 states. [2022-07-12 08:21:10,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50519 to 39293. [2022-07-12 08:21:10,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39293 states, 36060 states have (on average 1.5726289517470882) internal successors, (56709), 36191 states have internal predecessors, (56709), 2329 states have call successors, (2329), 775 states have call predecessors, (2329), 902 states have return successors, (4642), 2454 states have call predecessors, (4642), 2327 states have call successors, (4642) [2022-07-12 08:21:10,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39293 states to 39293 states and 63680 transitions. [2022-07-12 08:21:10,713 INFO L78 Accepts]: Start accepts. Automaton has 39293 states and 63680 transitions. Word has length 146 [2022-07-12 08:21:10,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:21:10,713 INFO L495 AbstractCegarLoop]: Abstraction has 39293 states and 63680 transitions. [2022-07-12 08:21:10,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:21:10,714 INFO L276 IsEmpty]: Start isEmpty. Operand 39293 states and 63680 transitions. [2022-07-12 08:21:10,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-12 08:21:10,731 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:21:10,731 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:21:10,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 08:21:10,731 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:21:10,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:21:10,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1540298822, now seen corresponding path program 1 times [2022-07-12 08:21:10,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:21:10,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887138157] [2022-07-12 08:21:10,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:21:10,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:21:10,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:21:10,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:21:10,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:21:10,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 08:21:10,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:21:10,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 08:21:10,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:21:10,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 08:21:10,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:21:10,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 08:21:10,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:21:10,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:21:10,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:21:10,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887138157] [2022-07-12 08:21:10,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887138157] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:21:10,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:21:10,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:21:10,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382079340] [2022-07-12 08:21:10,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:21:10,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:21:10,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:21:10,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:21:10,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:21:10,840 INFO L87 Difference]: Start difference. First operand 39293 states and 63680 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:21:21,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:21:21,316 INFO L93 Difference]: Finished difference Result 151030 states and 244645 transitions. [2022-07-12 08:21:21,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 08:21:21,317 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2022-07-12 08:21:21,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:21:22,009 INFO L225 Difference]: With dead ends: 151030 [2022-07-12 08:21:22,009 INFO L226 Difference]: Without dead ends: 113875 [2022-07-12 08:21:22,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 08:21:22,115 INFO L413 NwaCegarLoop]: 4856 mSDtfsCounter, 5263 mSDsluCounter, 17392 mSDsCounter, 0 mSdLazyCounter, 2774 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5278 SdHoareTripleChecker+Valid, 22248 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-12 08:21:22,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5278 Valid, 22248 Invalid, 2859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 2774 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-12 08:21:22,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113875 states. [2022-07-12 08:21:26,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113875 to 74879. [2022-07-12 08:21:27,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74879 states, 68574 states have (on average 1.5615393589407065) internal successors, (107081), 68833 states have internal predecessors, (107081), 4505 states have call successors, (4505), 1543 states have call predecessors, (4505), 1798 states have return successors, (11320), 4758 states have call predecessors, (11320), 4503 states have call successors, (11320) [2022-07-12 08:21:27,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74879 states to 74879 states and 122906 transitions. [2022-07-12 08:21:27,375 INFO L78 Accepts]: Start accepts. Automaton has 74879 states and 122906 transitions. Word has length 146 [2022-07-12 08:21:27,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:21:27,375 INFO L495 AbstractCegarLoop]: Abstraction has 74879 states and 122906 transitions. [2022-07-12 08:21:27,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:21:27,375 INFO L276 IsEmpty]: Start isEmpty. Operand 74879 states and 122906 transitions. [2022-07-12 08:21:27,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-12 08:21:27,414 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:21:27,414 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:21:27,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 08:21:27,415 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:21:27,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:21:27,415 INFO L85 PathProgramCache]: Analyzing trace with hash 388633404, now seen corresponding path program 1 times [2022-07-12 08:21:27,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:21:27,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533124336] [2022-07-12 08:21:27,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:21:27,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:21:27,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:21:27,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:21:27,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:21:27,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 08:21:27,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:21:27,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 08:21:27,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:21:27,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 08:21:27,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:21:27,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 08:21:27,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:21:27,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:21:27,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:21:27,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533124336] [2022-07-12 08:21:27,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533124336] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:21:27,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:21:27,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:21:27,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258742822] [2022-07-12 08:21:27,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:21:27,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:21:27,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:21:27,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:21:27,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:21:27,712 INFO L87 Difference]: Start difference. First operand 74879 states and 122906 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:21:47,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:21:47,445 INFO L93 Difference]: Finished difference Result 290934 states and 478781 transitions. [2022-07-12 08:21:47,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 08:21:47,446 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2022-07-12 08:21:47,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:21:48,587 INFO L225 Difference]: With dead ends: 290934 [2022-07-12 08:21:48,587 INFO L226 Difference]: Without dead ends: 218193 [2022-07-12 08:21:48,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 08:21:48,898 INFO L413 NwaCegarLoop]: 4712 mSDtfsCounter, 5471 mSDsluCounter, 17395 mSDsCounter, 0 mSdLazyCounter, 2353 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5497 SdHoareTripleChecker+Valid, 22107 SdHoareTripleChecker+Invalid, 2441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 2353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-12 08:21:48,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5497 Valid, 22107 Invalid, 2441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 2353 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-12 08:21:49,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218193 states.