./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/transmitter.11.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/systemc/transmitter.11.cil.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 940a677bfde7dbbc79e036121bd0ec6fd3518c0f58a02d336e5d42fafb098792 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 17:55:29,939 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 17:55:29,940 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 17:55:29,975 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 17:55:29,975 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 17:55:29,976 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 17:55:29,978 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 17:55:29,979 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 17:55:29,981 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 17:55:29,984 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 17:55:29,984 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 17:55:29,986 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 17:55:29,986 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 17:55:29,987 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 17:55:29,988 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 17:55:29,991 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 17:55:29,991 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 17:55:29,993 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 17:55:29,994 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 17:55:29,999 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 17:55:30,000 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 17:55:30,000 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 17:55:30,001 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 17:55:30,002 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 17:55:30,003 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 17:55:30,004 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 17:55:30,005 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 17:55:30,005 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 17:55:30,006 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 17:55:30,006 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 17:55:30,007 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 17:55:30,007 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 17:55:30,008 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 17:55:30,008 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 17:55:30,009 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 17:55:30,009 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 17:55:30,009 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 17:55:30,010 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 17:55:30,010 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 17:55:30,010 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 17:55:30,011 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 17:55:30,012 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 17:55:30,013 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 17:55:30,038 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 17:55:30,039 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 17:55:30,039 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 17:55:30,039 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 17:55:30,040 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 17:55:30,040 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 17:55:30,040 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 17:55:30,041 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 17:55:30,041 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 17:55:30,041 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 17:55:30,042 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 17:55:30,042 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 17:55:30,042 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 17:55:30,042 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 17:55:30,042 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 17:55:30,042 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 17:55:30,042 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 17:55:30,042 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 17:55:30,043 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 17:55:30,043 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 17:55:30,043 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 17:55:30,043 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 17:55:30,043 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 17:55:30,043 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 17:55:30,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 17:55:30,044 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 17:55:30,044 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 17:55:30,044 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 17:55:30,044 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 17:55:30,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 17:55:30,045 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 17:55:30,045 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 17:55:30,045 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 17:55:30,045 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 940a677bfde7dbbc79e036121bd0ec6fd3518c0f58a02d336e5d42fafb098792 [2022-07-22 17:55:30,262 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 17:55:30,280 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 17:55:30,282 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 17:55:30,282 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 17:55:30,283 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 17:55:30,284 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/transmitter.11.cil.c [2022-07-22 17:55:30,339 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03a594f6a/64c6ee33c8a84e7db25e1e02c4687c31/FLAGa18c8e926 [2022-07-22 17:55:30,743 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 17:55:30,744 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/transmitter.11.cil.c [2022-07-22 17:55:30,758 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03a594f6a/64c6ee33c8a84e7db25e1e02c4687c31/FLAGa18c8e926 [2022-07-22 17:55:30,766 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03a594f6a/64c6ee33c8a84e7db25e1e02c4687c31 [2022-07-22 17:55:30,768 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 17:55:30,769 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 17:55:30,772 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 17:55:30,772 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 17:55:30,775 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 17:55:30,775 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 05:55:30" (1/1) ... [2022-07-22 17:55:30,776 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19d73fa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:55:30, skipping insertion in model container [2022-07-22 17:55:30,776 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 05:55:30" (1/1) ... [2022-07-22 17:55:30,786 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 17:55:30,833 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 17:55:30,970 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/systemc/transmitter.11.cil.c[706,719] [2022-07-22 17:55:31,055 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 17:55:31,077 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 17:55:31,084 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/systemc/transmitter.11.cil.c[706,719] [2022-07-22 17:55:31,138 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 17:55:31,164 INFO L208 MainTranslator]: Completed translation [2022-07-22 17:55:31,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:55:31 WrapperNode [2022-07-22 17:55:31,165 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 17:55:31,166 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 17:55:31,166 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 17:55:31,166 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 17:55:31,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:55:31" (1/1) ... [2022-07-22 17:55:31,181 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:55:31" (1/1) ... [2022-07-22 17:55:31,212 INFO L137 Inliner]: procedures = 50, calls = 63, calls flagged for inlining = 34, calls inlined = 34, statements flattened = 777 [2022-07-22 17:55:31,212 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 17:55:31,213 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 17:55:31,213 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 17:55:31,213 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 17:55:31,219 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:55:31" (1/1) ... [2022-07-22 17:55:31,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:55:31" (1/1) ... [2022-07-22 17:55:31,222 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:55:31" (1/1) ... [2022-07-22 17:55:31,222 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:55:31" (1/1) ... [2022-07-22 17:55:31,237 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:55:31" (1/1) ... [2022-07-22 17:55:31,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:55:31" (1/1) ... [2022-07-22 17:55:31,250 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:55:31" (1/1) ... [2022-07-22 17:55:31,254 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 17:55:31,254 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 17:55:31,255 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 17:55:31,255 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 17:55:31,256 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:55:31" (1/1) ... [2022-07-22 17:55:31,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 17:55:31,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:55:31,303 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 17:55:31,305 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 [2022-07-22 17:55:31,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 17:55:31,327 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-22 17:55:31,327 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-22 17:55:31,327 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-22 17:55:31,327 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-22 17:55:31,327 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-22 17:55:31,328 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-22 17:55:31,328 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-22 17:55:31,328 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-22 17:55:31,328 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-22 17:55:31,328 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-22 17:55:31,328 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-22 17:55:31,328 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-22 17:55:31,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 17:55:31,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 17:55:31,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 17:55:31,399 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 17:55:31,400 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 17:55:31,927 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 17:55:31,935 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 17:55:31,936 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2022-07-22 17:55:31,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 05:55:31 BoogieIcfgContainer [2022-07-22 17:55:31,938 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 17:55:31,941 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 17:55:31,941 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 17:55:31,944 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 17:55:31,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 05:55:30" (1/3) ... [2022-07-22 17:55:31,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@554f2ed2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 05:55:31, skipping insertion in model container [2022-07-22 17:55:31,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:55:31" (2/3) ... [2022-07-22 17:55:31,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@554f2ed2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 05:55:31, skipping insertion in model container [2022-07-22 17:55:31,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 05:55:31" (3/3) ... [2022-07-22 17:55:31,946 INFO L111 eAbstractionObserver]: Analyzing ICFG transmitter.11.cil.c [2022-07-22 17:55:31,957 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 17:55:31,957 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 17:55:32,020 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 17:55:32,024 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@7a7f618a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@563b9bb9 [2022-07-22 17:55:32,024 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 17:55:32,029 INFO L276 IsEmpty]: Start isEmpty. Operand has 353 states, 321 states have (on average 1.6604361370716512) internal successors, (533), 323 states have internal predecessors, (533), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-07-22 17:55:32,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-07-22 17:55:32,052 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:55:32,053 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:55:32,053 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:55:32,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:55:32,059 INFO L85 PathProgramCache]: Analyzing trace with hash 809837522, now seen corresponding path program 1 times [2022-07-22 17:55:32,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:55:32,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606810610] [2022-07-22 17:55:32,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:55:32,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:55:32,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:32,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:55:32,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:32,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:55:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:32,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 17:55:32,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:32,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-22 17:55:32,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:32,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-22 17:55:32,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:32,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:55:32,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:55:32,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606810610] [2022-07-22 17:55:32,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606810610] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:55:32,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:55:32,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 17:55:32,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756037629] [2022-07-22 17:55:32,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:55:32,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 17:55:32,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:55:32,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 17:55:32,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:55:32,515 INFO L87 Difference]: Start difference. First operand has 353 states, 321 states have (on average 1.6604361370716512) internal successors, (533), 323 states have internal predecessors, (533), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 3 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:55:33,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:55:33,685 INFO L93 Difference]: Finished difference Result 824 states and 1366 transitions. [2022-07-22 17:55:33,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 17:55:33,687 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 3 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2022-07-22 17:55:33,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:55:33,706 INFO L225 Difference]: With dead ends: 824 [2022-07-22 17:55:33,706 INFO L226 Difference]: Without dead ends: 477 [2022-07-22 17:55:33,714 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 [2022-07-22 17:55:33,717 INFO L413 NwaCegarLoop]: 604 mSDtfsCounter, 941 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 963 SdHoareTripleChecker+Valid, 973 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 17:55:33,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [963 Valid, 973 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 17:55:33,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2022-07-22 17:55:33,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 348. [2022-07-22 17:55:33,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 317 states have (on average 1.5646687697160884) internal successors, (496), 318 states have internal predecessors, (496), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-07-22 17:55:33,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 544 transitions. [2022-07-22 17:55:33,799 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 544 transitions. Word has length 175 [2022-07-22 17:55:33,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:55:33,799 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 544 transitions. [2022-07-22 17:55:33,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 3 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:55:33,800 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 544 transitions. [2022-07-22 17:55:33,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-07-22 17:55:33,813 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:55:33,813 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:55:33,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 17:55:33,814 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:55:33,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:55:33,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1760521452, now seen corresponding path program 1 times [2022-07-22 17:55:33,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:55:33,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073887436] [2022-07-22 17:55:33,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:55:33,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:55:33,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:33,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:55:33,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:33,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:55:33,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:33,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 17:55:34,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:34,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-22 17:55:34,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:34,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-22 17:55:34,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:34,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:55:34,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:55:34,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073887436] [2022-07-22 17:55:34,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073887436] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:55:34,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:55:34,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:55:34,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4882414] [2022-07-22 17:55:34,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:55:34,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:55:34,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:55:34,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:55:34,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:55:34,027 INFO L87 Difference]: Start difference. First operand 348 states and 544 transitions. Second operand has 6 states, 6 states have (on average 27.5) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:55:35,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:55:35,999 INFO L93 Difference]: Finished difference Result 1279 states and 2055 transitions. [2022-07-22 17:55:35,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 17:55:35,999 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.5) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2022-07-22 17:55:36,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:55:36,004 INFO L225 Difference]: With dead ends: 1279 [2022-07-22 17:55:36,004 INFO L226 Difference]: Without dead ends: 950 [2022-07-22 17:55:36,005 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 [2022-07-22 17:55:36,006 INFO L413 NwaCegarLoop]: 646 mSDtfsCounter, 1412 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 1820 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1429 SdHoareTripleChecker+Valid, 1518 SdHoareTripleChecker+Invalid, 1929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-22 17:55:36,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1429 Valid, 1518 Invalid, 1929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1820 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-22 17:55:36,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2022-07-22 17:55:36,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 692. [2022-07-22 17:55:36,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 635 states have (on average 1.5748031496062993) internal successors, (1000), 637 states have internal predecessors, (1000), 43 states have call successors, (43), 12 states have call predecessors, (43), 13 states have return successors, (46), 43 states have call predecessors, (46), 43 states have call successors, (46) [2022-07-22 17:55:36,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1089 transitions. [2022-07-22 17:55:36,041 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1089 transitions. Word has length 175 [2022-07-22 17:55:36,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:55:36,042 INFO L495 AbstractCegarLoop]: Abstraction has 692 states and 1089 transitions. [2022-07-22 17:55:36,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.5) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:55:36,042 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1089 transitions. [2022-07-22 17:55:36,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-07-22 17:55:36,045 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:55:36,045 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:55:36,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 17:55:36,045 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:55:36,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:55:36,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1704816597, now seen corresponding path program 1 times [2022-07-22 17:55:36,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:55:36,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411994092] [2022-07-22 17:55:36,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:55:36,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:55:36,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:36,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:55:36,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:36,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:55:36,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:36,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 17:55:36,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:36,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-22 17:55:36,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:36,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-22 17:55:36,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:36,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:55:36,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:55:36,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411994092] [2022-07-22 17:55:36,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411994092] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:55:36,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:55:36,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:55:36,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103563967] [2022-07-22 17:55:36,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:55:36,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:55:36,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:55:36,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:55:36,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:55:36,183 INFO L87 Difference]: Start difference. First operand 692 states and 1089 transitions. Second operand has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:55:39,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:55:39,163 INFO L93 Difference]: Finished difference Result 2277 states and 3628 transitions. [2022-07-22 17:55:39,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 17:55:39,163 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2022-07-22 17:55:39,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:55:39,171 INFO L225 Difference]: With dead ends: 2277 [2022-07-22 17:55:39,172 INFO L226 Difference]: Without dead ends: 1604 [2022-07-22 17:55:39,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-22 17:55:39,179 INFO L413 NwaCegarLoop]: 1127 mSDtfsCounter, 1549 mSDsluCounter, 1730 mSDsCounter, 0 mSdLazyCounter, 3577 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1566 SdHoareTripleChecker+Valid, 2857 SdHoareTripleChecker+Invalid, 3650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 3577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-22 17:55:39,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1566 Valid, 2857 Invalid, 3650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 3577 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-22 17:55:39,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2022-07-22 17:55:39,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1012. [2022-07-22 17:55:39,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1012 states, 929 states have (on average 1.5672766415500539) internal successors, (1456), 932 states have internal predecessors, (1456), 62 states have call successors, (62), 18 states have call predecessors, (62), 20 states have return successors, (67), 63 states have call predecessors, (67), 62 states have call successors, (67) [2022-07-22 17:55:39,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1012 states to 1012 states and 1585 transitions. [2022-07-22 17:55:39,244 INFO L78 Accepts]: Start accepts. Automaton has 1012 states and 1585 transitions. Word has length 175 [2022-07-22 17:55:39,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:55:39,244 INFO L495 AbstractCegarLoop]: Abstraction has 1012 states and 1585 transitions. [2022-07-22 17:55:39,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:55:39,245 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states and 1585 transitions. [2022-07-22 17:55:39,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-07-22 17:55:39,246 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:55:39,247 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:55:39,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 17:55:39,247 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:55:39,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:55:39,248 INFO L85 PathProgramCache]: Analyzing trace with hash 299624919, now seen corresponding path program 1 times [2022-07-22 17:55:39,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:55:39,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130031212] [2022-07-22 17:55:39,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:55:39,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:55:39,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:39,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:55:39,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:39,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:55:39,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:39,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 17:55:39,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:39,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-22 17:55:39,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:39,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-22 17:55:39,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:39,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:55:39,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:55:39,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130031212] [2022-07-22 17:55:39,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130031212] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:55:39,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:55:39,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:55:39,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753741742] [2022-07-22 17:55:39,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:55:39,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:55:39,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:55:39,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:55:39,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:55:39,382 INFO L87 Difference]: Start difference. First operand 1012 states and 1585 transitions. Second operand has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:55:42,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:55:42,429 INFO L93 Difference]: Finished difference Result 3507 states and 5578 transitions. [2022-07-22 17:55:42,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 17:55:42,434 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2022-07-22 17:55:42,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:55:42,444 INFO L225 Difference]: With dead ends: 3507 [2022-07-22 17:55:42,444 INFO L226 Difference]: Without dead ends: 2514 [2022-07-22 17:55:42,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-22 17:55:42,448 INFO L413 NwaCegarLoop]: 1119 mSDtfsCounter, 1546 mSDsluCounter, 1730 mSDsCounter, 0 mSdLazyCounter, 3579 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1563 SdHoareTripleChecker+Valid, 2849 SdHoareTripleChecker+Invalid, 3655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 3579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-22 17:55:42,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1563 Valid, 2849 Invalid, 3655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 3579 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-22 17:55:42,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2514 states. [2022-07-22 17:55:42,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2514 to 1653. [2022-07-22 17:55:42,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1653 states, 1518 states have (on average 1.5606060606060606) internal successors, (2369), 1523 states have internal predecessors, (2369), 100 states have call successors, (100), 30 states have call predecessors, (100), 34 states have return successors, (113), 103 states have call predecessors, (113), 100 states have call successors, (113) [2022-07-22 17:55:42,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1653 states to 1653 states and 2582 transitions. [2022-07-22 17:55:42,537 INFO L78 Accepts]: Start accepts. Automaton has 1653 states and 2582 transitions. Word has length 175 [2022-07-22 17:55:42,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:55:42,537 INFO L495 AbstractCegarLoop]: Abstraction has 1653 states and 2582 transitions. [2022-07-22 17:55:42,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:55:42,538 INFO L276 IsEmpty]: Start isEmpty. Operand 1653 states and 2582 transitions. [2022-07-22 17:55:42,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-07-22 17:55:42,544 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:55:42,545 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:55:42,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 17:55:42,545 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:55:42,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:55:42,545 INFO L85 PathProgramCache]: Analyzing trace with hash -2101008491, now seen corresponding path program 1 times [2022-07-22 17:55:42,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:55:42,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996016706] [2022-07-22 17:55:42,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:55:42,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:55:42,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:42,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:55:42,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:42,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:55:42,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:42,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 17:55:42,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:42,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-22 17:55:42,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:42,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-22 17:55:42,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:42,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:55:42,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:55:42,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996016706] [2022-07-22 17:55:42,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996016706] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:55:42,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:55:42,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:55:42,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917674414] [2022-07-22 17:55:42,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:55:42,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:55:42,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:55:42,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:55:42,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:55:42,665 INFO L87 Difference]: Start difference. First operand 1653 states and 2582 transitions. Second operand has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:55:45,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:55:45,801 INFO L93 Difference]: Finished difference Result 5874 states and 9307 transitions. [2022-07-22 17:55:45,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 17:55:45,808 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2022-07-22 17:55:45,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:55:45,821 INFO L225 Difference]: With dead ends: 5874 [2022-07-22 17:55:45,822 INFO L226 Difference]: Without dead ends: 4240 [2022-07-22 17:55:45,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-22 17:55:45,826 INFO L413 NwaCegarLoop]: 1115 mSDtfsCounter, 1542 mSDsluCounter, 1730 mSDsCounter, 0 mSdLazyCounter, 3574 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1559 SdHoareTripleChecker+Valid, 2845 SdHoareTripleChecker+Invalid, 3650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 3574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-22 17:55:45,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1559 Valid, 2845 Invalid, 3650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 3574 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-22 17:55:45,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4240 states. [2022-07-22 17:55:45,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4240 to 2936. [2022-07-22 17:55:45,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2697 states have (on average 1.5554319614386356) internal successors, (4195), 2706 states have internal predecessors, (4195), 176 states have call successors, (176), 54 states have call predecessors, (176), 62 states have return successors, (211), 183 states have call predecessors, (211), 176 states have call successors, (211) [2022-07-22 17:55:45,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 4582 transitions. [2022-07-22 17:55:45,981 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 4582 transitions. Word has length 175 [2022-07-22 17:55:45,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:55:45,981 INFO L495 AbstractCegarLoop]: Abstraction has 2936 states and 4582 transitions. [2022-07-22 17:55:45,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:55:45,982 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 4582 transitions. [2022-07-22 17:55:45,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-07-22 17:55:45,986 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:55:45,986 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:55:45,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 17:55:45,986 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:55:45,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:55:45,987 INFO L85 PathProgramCache]: Analyzing trace with hash -654427625, now seen corresponding path program 1 times [2022-07-22 17:55:45,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:55:45,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668665321] [2022-07-22 17:55:45,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:55:45,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:55:45,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:46,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:55:46,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:46,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:55:46,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:46,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 17:55:46,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:46,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-22 17:55:46,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:46,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-22 17:55:46,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:46,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:55:46,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:55:46,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668665321] [2022-07-22 17:55:46,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668665321] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:55:46,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:55:46,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:55:46,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295774802] [2022-07-22 17:55:46,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:55:46,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:55:46,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:55:46,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:55:46,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:55:46,115 INFO L87 Difference]: Start difference. First operand 2936 states and 4582 transitions. Second operand has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:55:49,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:55:49,288 INFO L93 Difference]: Finished difference Result 10607 states and 16781 transitions. [2022-07-22 17:55:49,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 17:55:49,289 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2022-07-22 17:55:49,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:55:49,317 INFO L225 Difference]: With dead ends: 10607 [2022-07-22 17:55:49,317 INFO L226 Difference]: Without dead ends: 7690 [2022-07-22 17:55:49,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-22 17:55:49,327 INFO L413 NwaCegarLoop]: 1111 mSDtfsCounter, 1538 mSDsluCounter, 1730 mSDsCounter, 0 mSdLazyCounter, 3569 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1555 SdHoareTripleChecker+Valid, 2841 SdHoareTripleChecker+Invalid, 3645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 3569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-22 17:55:49,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1555 Valid, 2841 Invalid, 3645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 3569 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-22 17:55:49,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7690 states. [2022-07-22 17:55:49,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7690 to 5507. [2022-07-22 17:55:49,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5507 states, 5060 states have (on average 1.5519762845849803) internal successors, (7853), 5077 states have internal predecessors, (7853), 328 states have call successors, (328), 102 states have call predecessors, (328), 118 states have return successors, (425), 343 states have call predecessors, (425), 328 states have call successors, (425) [2022-07-22 17:55:49,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5507 states to 5507 states and 8606 transitions. [2022-07-22 17:55:49,636 INFO L78 Accepts]: Start accepts. Automaton has 5507 states and 8606 transitions. Word has length 175 [2022-07-22 17:55:49,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:55:49,636 INFO L495 AbstractCegarLoop]: Abstraction has 5507 states and 8606 transitions. [2022-07-22 17:55:49,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:55:49,637 INFO L276 IsEmpty]: Start isEmpty. Operand 5507 states and 8606 transitions. [2022-07-22 17:55:49,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-07-22 17:55:49,643 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:55:49,644 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:55:49,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 17:55:49,644 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:55:49,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:55:49,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1577595051, now seen corresponding path program 1 times [2022-07-22 17:55:49,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:55:49,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688534979] [2022-07-22 17:55:49,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:55:49,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:55:49,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:49,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:55:49,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:49,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:55:49,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:49,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 17:55:49,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:49,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-22 17:55:49,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:49,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-22 17:55:49,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:49,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:55:49,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:55:49,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688534979] [2022-07-22 17:55:49,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688534979] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:55:49,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:55:49,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:55:49,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082214162] [2022-07-22 17:55:49,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:55:49,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:55:49,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:55:49,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:55:49,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:55:49,755 INFO L87 Difference]: Start difference. First operand 5507 states and 8606 transitions. Second operand has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:55:53,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:55:53,207 INFO L93 Difference]: Finished difference Result 20072 states and 31787 transitions. [2022-07-22 17:55:53,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 17:55:53,208 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2022-07-22 17:55:53,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:55:53,253 INFO L225 Difference]: With dead ends: 20072 [2022-07-22 17:55:53,253 INFO L226 Difference]: Without dead ends: 14584 [2022-07-22 17:55:53,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-22 17:55:53,267 INFO L413 NwaCegarLoop]: 1105 mSDtfsCounter, 1537 mSDsluCounter, 1730 mSDsCounter, 0 mSdLazyCounter, 3561 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1554 SdHoareTripleChecker+Valid, 2835 SdHoareTripleChecker+Invalid, 3640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 3561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-22 17:55:53,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1554 Valid, 2835 Invalid, 3640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 3561 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-22 17:55:53,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14584 states. [2022-07-22 17:55:53,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14584 to 10662. [2022-07-22 17:55:53,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10662 states, 9799 states have (on average 1.54985202571691) internal successors, (15187), 9832 states have internal predecessors, (15187), 632 states have call successors, (632), 198 states have call predecessors, (632), 230 states have return successors, (907), 663 states have call predecessors, (907), 632 states have call successors, (907) [2022-07-22 17:55:53,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10662 states to 10662 states and 16726 transitions. [2022-07-22 17:55:53,806 INFO L78 Accepts]: Start accepts. Automaton has 10662 states and 16726 transitions. Word has length 175 [2022-07-22 17:55:53,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:55:53,806 INFO L495 AbstractCegarLoop]: Abstraction has 10662 states and 16726 transitions. [2022-07-22 17:55:53,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:55:53,807 INFO L276 IsEmpty]: Start isEmpty. Operand 10662 states and 16726 transitions. [2022-07-22 17:55:53,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-07-22 17:55:53,820 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:55:53,820 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:55:53,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 17:55:53,820 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:55:53,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:55:53,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1191732649, now seen corresponding path program 1 times [2022-07-22 17:55:53,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:55:53,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947777034] [2022-07-22 17:55:53,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:55:53,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:55:53,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:53,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:55:53,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:53,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:55:53,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:53,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 17:55:53,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:53,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-22 17:55:53,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:53,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-22 17:55:53,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:53,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:55:53,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:55:53,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947777034] [2022-07-22 17:55:53,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947777034] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:55:53,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:55:53,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:55:53,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209430657] [2022-07-22 17:55:53,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:55:53,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:55:53,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:55:53,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:55:53,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:55:53,984 INFO L87 Difference]: Start difference. First operand 10662 states and 16726 transitions. Second operand has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:55:55,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:55:55,868 INFO L93 Difference]: Finished difference Result 25254 states and 40241 transitions. [2022-07-22 17:55:55,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 17:55:55,868 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2022-07-22 17:55:55,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:55:55,910 INFO L225 Difference]: With dead ends: 25254 [2022-07-22 17:55:55,910 INFO L226 Difference]: Without dead ends: 14611 [2022-07-22 17:55:55,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 17:55:55,937 INFO L413 NwaCegarLoop]: 542 mSDtfsCounter, 1085 mSDsluCounter, 859 mSDsCounter, 0 mSdLazyCounter, 1261 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1103 SdHoareTripleChecker+Valid, 1401 SdHoareTripleChecker+Invalid, 1343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:55:55,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1103 Valid, 1401 Invalid, 1343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1261 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 17:55:55,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14611 states. [2022-07-22 17:55:56,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14611 to 10662. [2022-07-22 17:55:56,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10662 states, 9799 states have (on average 1.5464843351362383) internal successors, (15154), 9832 states have internal predecessors, (15154), 632 states have call successors, (632), 198 states have call predecessors, (632), 230 states have return successors, (907), 663 states have call predecessors, (907), 632 states have call successors, (907) [2022-07-22 17:55:56,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10662 states to 10662 states and 16693 transitions. [2022-07-22 17:55:56,508 INFO L78 Accepts]: Start accepts. Automaton has 10662 states and 16693 transitions. Word has length 175 [2022-07-22 17:55:56,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:55:56,509 INFO L495 AbstractCegarLoop]: Abstraction has 10662 states and 16693 transitions. [2022-07-22 17:55:56,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:55:56,509 INFO L276 IsEmpty]: Start isEmpty. Operand 10662 states and 16693 transitions. [2022-07-22 17:55:56,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-07-22 17:55:56,521 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:55:56,521 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:55:56,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 17:55:56,521 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:55:56,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:55:56,522 INFO L85 PathProgramCache]: Analyzing trace with hash 739392985, now seen corresponding path program 1 times [2022-07-22 17:55:56,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:55:56,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168140192] [2022-07-22 17:55:56,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:55:56,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:55:56,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:56,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:55:56,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:56,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:55:56,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:56,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 17:55:56,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:56,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-22 17:55:56,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:56,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-22 17:55:56,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:56,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:55:56,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:55:56,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168140192] [2022-07-22 17:55:56,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168140192] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:55:56,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:55:56,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:55:56,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913047120] [2022-07-22 17:55:56,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:55:56,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:55:56,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:55:56,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:55:56,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:55:56,616 INFO L87 Difference]: Start difference. First operand 10662 states and 16693 transitions. Second operand has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:56:01,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:56:01,092 INFO L93 Difference]: Finished difference Result 38936 states and 61697 transitions. [2022-07-22 17:56:01,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 17:56:01,092 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2022-07-22 17:56:01,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:56:01,176 INFO L225 Difference]: With dead ends: 38936 [2022-07-22 17:56:01,176 INFO L226 Difference]: Without dead ends: 28293 [2022-07-22 17:56:01,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-22 17:56:01,205 INFO L413 NwaCegarLoop]: 1091 mSDtfsCounter, 1525 mSDsluCounter, 1730 mSDsCounter, 0 mSdLazyCounter, 3522 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1542 SdHoareTripleChecker+Valid, 2821 SdHoareTripleChecker+Invalid, 3602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 3522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-22 17:56:01,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1542 Valid, 2821 Invalid, 3602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 3522 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-22 17:56:01,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28293 states. [2022-07-22 17:56:02,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28293 to 21067. [2022-07-22 17:56:02,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21067 states, 19372 states have (on average 1.5451166632252735) internal successors, (29932), 19437 states have internal predecessors, (29932), 1240 states have call successors, (1240), 390 states have call predecessors, (1240), 454 states have return successors, (2033), 1303 states have call predecessors, (2033), 1240 states have call successors, (2033) [2022-07-22 17:56:02,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21067 states to 21067 states and 33205 transitions. [2022-07-22 17:56:02,486 INFO L78 Accepts]: Start accepts. Automaton has 21067 states and 33205 transitions. Word has length 175 [2022-07-22 17:56:02,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:56:02,487 INFO L495 AbstractCegarLoop]: Abstraction has 21067 states and 33205 transitions. [2022-07-22 17:56:02,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:56:02,487 INFO L276 IsEmpty]: Start isEmpty. Operand 21067 states and 33205 transitions. [2022-07-22 17:56:02,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-07-22 17:56:02,509 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:56:02,509 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:56:02,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 17:56:02,510 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:56:02,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:56:02,510 INFO L85 PathProgramCache]: Analyzing trace with hash -583785961, now seen corresponding path program 1 times [2022-07-22 17:56:02,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:56:02,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089695229] [2022-07-22 17:56:02,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:56:02,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:56:02,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:02,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:56:02,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:02,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:56:02,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:02,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 17:56:02,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:02,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-22 17:56:02,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:02,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-22 17:56:02,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:02,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:56:02,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:56:02,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089695229] [2022-07-22 17:56:02,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089695229] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:56:02,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:56:02,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:56:02,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392704763] [2022-07-22 17:56:02,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:56:02,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:56:02,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:56:02,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:56:02,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:56:02,629 INFO L87 Difference]: Start difference. First operand 21067 states and 33205 transitions. Second operand has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:56:08,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:56:08,918 INFO L93 Difference]: Finished difference Result 76799 states and 122519 transitions. [2022-07-22 17:56:08,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 17:56:08,918 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2022-07-22 17:56:08,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:56:09,189 INFO L225 Difference]: With dead ends: 76799 [2022-07-22 17:56:09,190 INFO L226 Difference]: Without dead ends: 55751 [2022-07-22 17:56:09,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-22 17:56:09,242 INFO L413 NwaCegarLoop]: 1086 mSDtfsCounter, 1524 mSDsluCounter, 1730 mSDsCounter, 0 mSdLazyCounter, 3514 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1541 SdHoareTripleChecker+Valid, 2816 SdHoareTripleChecker+Invalid, 3594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 3514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-22 17:56:09,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1541 Valid, 2816 Invalid, 3594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 3514 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-22 17:56:09,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55751 states. [2022-07-22 17:56:11,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55751 to 41936. [2022-07-22 17:56:11,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41936 states, 38577 states have (on average 1.5442880472820593) internal successors, (59574), 38706 states have internal predecessors, (59574), 2456 states have call successors, (2456), 774 states have call predecessors, (2456), 902 states have return successors, (4771), 2583 states have call predecessors, (4771), 2456 states have call successors, (4771) [2022-07-22 17:56:11,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41936 states to 41936 states and 66801 transitions. [2022-07-22 17:56:11,992 INFO L78 Accepts]: Start accepts. Automaton has 41936 states and 66801 transitions. Word has length 175 [2022-07-22 17:56:11,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:56:11,992 INFO L495 AbstractCegarLoop]: Abstraction has 41936 states and 66801 transitions. [2022-07-22 17:56:11,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:56:11,993 INFO L276 IsEmpty]: Start isEmpty. Operand 41936 states and 66801 transitions. [2022-07-22 17:56:12,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-07-22 17:56:12,044 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:56:12,044 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:56:12,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 17:56:12,045 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:56:12,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:56:12,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1313193497, now seen corresponding path program 1 times [2022-07-22 17:56:12,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:56:12,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053017670] [2022-07-22 17:56:12,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:56:12,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:56:12,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:12,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:56:12,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:12,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:56:12,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:12,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 17:56:12,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:12,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-22 17:56:12,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:12,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-22 17:56:12,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:12,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:56:12,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:56:12,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053017670] [2022-07-22 17:56:12,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053017670] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:56:12,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:56:12,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:56:12,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051488004] [2022-07-22 17:56:12,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:56:12,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:56:12,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:56:12,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:56:12,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:56:12,143 INFO L87 Difference]: Start difference. First operand 41936 states and 66801 transitions. Second operand has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:56:22,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:56:22,547 INFO L93 Difference]: Finished difference Result 152522 states and 246005 transitions. [2022-07-22 17:56:22,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 17:56:22,547 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2022-07-22 17:56:22,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:56:22,925 INFO L225 Difference]: With dead ends: 152522 [2022-07-22 17:56:22,926 INFO L226 Difference]: Without dead ends: 110605 [2022-07-22 17:56:23,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-22 17:56:23,034 INFO L413 NwaCegarLoop]: 1081 mSDtfsCounter, 1523 mSDsluCounter, 1730 mSDsCounter, 0 mSdLazyCounter, 3506 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1540 SdHoareTripleChecker+Valid, 2811 SdHoareTripleChecker+Invalid, 3586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 3506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-22 17:56:23,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1540 Valid, 2811 Invalid, 3586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 3506 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-22 17:56:23,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110605 states. [2022-07-22 17:56:28,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110605 to 83801. [2022-07-22 17:56:28,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83801 states, 77114 states have (on average 1.5437923074928028) internal successors, (119048), 77371 states have internal predecessors, (119048), 4888 states have call successors, (4888), 1542 states have call predecessors, (4888), 1798 states have return successors, (11705), 5143 states have call predecessors, (11705), 4888 states have call successors, (11705) [2022-07-22 17:56:28,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83801 states to 83801 states and 135641 transitions. [2022-07-22 17:56:28,655 INFO L78 Accepts]: Start accepts. Automaton has 83801 states and 135641 transitions. Word has length 175 [2022-07-22 17:56:28,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:56:28,656 INFO L495 AbstractCegarLoop]: Abstraction has 83801 states and 135641 transitions. [2022-07-22 17:56:28,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:56:28,656 INFO L276 IsEmpty]: Start isEmpty. Operand 83801 states and 135641 transitions. [2022-07-22 17:56:28,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-07-22 17:56:28,747 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:56:28,747 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:56:28,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 17:56:28,748 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:56:28,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:56:28,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1651481047, now seen corresponding path program 1 times [2022-07-22 17:56:28,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:56:28,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773069141] [2022-07-22 17:56:28,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:56:28,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:56:28,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:28,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:56:28,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:28,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:56:28,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:28,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 17:56:28,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:28,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-22 17:56:28,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:28,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-22 17:56:28,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:28,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:56:28,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:56:28,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773069141] [2022-07-22 17:56:28,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773069141] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:56:28,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:56:28,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:56:28,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498734371] [2022-07-22 17:56:28,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:56:28,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:56:28,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:56:28,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:56:28,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:56:28,848 INFO L87 Difference]: Start difference. First operand 83801 states and 135641 transitions. Second operand has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:56:38,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:56:38,463 INFO L93 Difference]: Finished difference Result 195716 states and 323764 transitions. [2022-07-22 17:56:38,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 17:56:38,464 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2022-07-22 17:56:38,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:56:38,898 INFO L225 Difference]: With dead ends: 195716 [2022-07-22 17:56:38,898 INFO L226 Difference]: Without dead ends: 111934 [2022-07-22 17:56:39,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 17:56:39,109 INFO L413 NwaCegarLoop]: 561 mSDtfsCounter, 1178 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 1158 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1196 SdHoareTripleChecker+Valid, 1238 SdHoareTripleChecker+Invalid, 1263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 17:56:39,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1196 Valid, 1238 Invalid, 1263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1158 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 17:56:39,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111934 states. [2022-07-22 17:56:44,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111934 to 83801. [2022-07-22 17:56:44,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83801 states, 77114 states have (on average 1.5404595793241176) internal successors, (118791), 77371 states have internal predecessors, (118791), 4888 states have call successors, (4888), 1542 states have call predecessors, (4888), 1798 states have return successors, (11705), 5143 states have call predecessors, (11705), 4888 states have call successors, (11705) [2022-07-22 17:56:45,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83801 states to 83801 states and 135384 transitions. [2022-07-22 17:56:45,184 INFO L78 Accepts]: Start accepts. Automaton has 83801 states and 135384 transitions. Word has length 175 [2022-07-22 17:56:45,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:56:45,184 INFO L495 AbstractCegarLoop]: Abstraction has 83801 states and 135384 transitions. [2022-07-22 17:56:45,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:56:45,185 INFO L276 IsEmpty]: Start isEmpty. Operand 83801 states and 135384 transitions. [2022-07-22 17:56:45,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-07-22 17:56:45,279 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:56:45,279 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:56:45,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 17:56:45,279 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:56:45,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:56:45,280 INFO L85 PathProgramCache]: Analyzing trace with hash 2078035545, now seen corresponding path program 1 times [2022-07-22 17:56:45,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:56:45,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465922055] [2022-07-22 17:56:45,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:56:45,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:56:45,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:45,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:56:45,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:45,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:56:45,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:45,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 17:56:45,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:45,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-22 17:56:45,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:45,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-22 17:56:45,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:45,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:56:45,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:56:45,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465922055] [2022-07-22 17:56:45,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465922055] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:56:45,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:56:45,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:56:45,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504119323] [2022-07-22 17:56:45,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:56:45,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:56:45,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:56:45,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:56:45,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:56:45,397 INFO L87 Difference]: Start difference. First operand 83801 states and 135384 transitions. Second operand has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)