./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.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/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.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 16db63adfa8747ce86c67ae78be78e889eae71e4b07fbcb21a84ad0decbbdac7 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 18:16:50,013 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 18:16:50,015 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 18:16:50,071 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 18:16:50,075 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 18:16:50,076 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 18:16:50,081 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 18:16:50,083 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 18:16:50,085 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 18:16:50,090 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 18:16:50,091 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 18:16:50,093 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 18:16:50,093 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 18:16:50,095 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 18:16:50,096 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 18:16:50,098 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 18:16:50,099 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 18:16:50,100 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 18:16:50,103 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 18:16:50,106 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 18:16:50,109 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 18:16:50,110 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 18:16:50,111 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 18:16:50,111 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 18:16:50,113 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 18:16:50,117 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 18:16:50,118 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 18:16:50,118 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 18:16:50,119 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 18:16:50,119 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 18:16:50,120 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 18:16:50,120 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 18:16:50,122 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 18:16:50,122 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 18:16:50,123 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 18:16:50,124 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 18:16:50,124 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 18:16:50,124 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 18:16:50,125 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 18:16:50,125 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 18:16:50,125 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 18:16:50,127 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 18:16:50,128 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 18:16:50,163 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 18:16:50,164 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 18:16:50,164 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 18:16:50,165 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 18:16:50,165 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 18:16:50,165 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 18:16:50,166 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 18:16:50,166 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 18:16:50,166 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 18:16:50,167 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 18:16:50,167 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 18:16:50,167 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 18:16:50,168 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 18:16:50,168 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 18:16:50,168 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 18:16:50,168 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 18:16:50,168 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 18:16:50,168 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 18:16:50,169 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 18:16:50,169 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 18:16:50,169 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 18:16:50,169 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 18:16:50,169 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 18:16:50,170 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 18:16:50,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 18:16:50,170 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 18:16:50,170 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 18:16:50,170 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 18:16:50,171 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 18:16:50,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 18:16:50,171 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 18:16:50,171 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 18:16:50,172 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 18:16:50,172 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16db63adfa8747ce86c67ae78be78e889eae71e4b07fbcb21a84ad0decbbdac7 [2022-07-22 18:16:50,397 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 18:16:50,413 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 18:16:50,416 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 18:16:50,417 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 18:16:50,417 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 18:16:50,418 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-07-22 18:16:50,471 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/caeae7adf/131f9e5542b24ebe97c4f4d6fb62bc5e/FLAG48a4b6160 [2022-07-22 18:16:50,963 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 18:16:50,968 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-07-22 18:16:50,995 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/caeae7adf/131f9e5542b24ebe97c4f4d6fb62bc5e/FLAG48a4b6160 [2022-07-22 18:16:51,274 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/caeae7adf/131f9e5542b24ebe97c4f4d6fb62bc5e [2022-07-22 18:16:51,276 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 18:16:51,277 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 18:16:51,278 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 18:16:51,279 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 18:16:51,282 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 18:16:51,283 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:16:51" (1/1) ... [2022-07-22 18:16:51,284 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6260953f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:16:51, skipping insertion in model container [2022-07-22 18:16:51,284 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:16:51" (1/1) ... [2022-07-22 18:16:51,290 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 18:16:51,337 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 18:16:51,605 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/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[12986,12999] [2022-07-22 18:16:51,666 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 18:16:51,688 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 18:16:51,756 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/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[12986,12999] [2022-07-22 18:16:51,826 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 18:16:51,844 INFO L208 MainTranslator]: Completed translation [2022-07-22 18:16:51,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:16:51 WrapperNode [2022-07-22 18:16:51,845 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 18:16:51,846 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 18:16:51,846 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 18:16:51,847 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 18:16:51,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:16:51" (1/1) ... [2022-07-22 18:16:51,886 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:16:51" (1/1) ... [2022-07-22 18:16:51,961 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1297 [2022-07-22 18:16:51,961 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 18:16:51,962 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 18:16:51,962 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 18:16:51,962 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 18:16:51,970 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:16:51" (1/1) ... [2022-07-22 18:16:51,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:16:51" (1/1) ... [2022-07-22 18:16:51,975 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:16:51" (1/1) ... [2022-07-22 18:16:51,979 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:16:51" (1/1) ... [2022-07-22 18:16:52,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:16:51" (1/1) ... [2022-07-22 18:16:52,017 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:16:51" (1/1) ... [2022-07-22 18:16:52,021 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:16:51" (1/1) ... [2022-07-22 18:16:52,026 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 18:16:52,027 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 18:16:52,027 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 18:16:52,027 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 18:16:52,040 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:16:51" (1/1) ... [2022-07-22 18:16:52,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 18:16:52,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 18:16:52,093 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 18:16:52,102 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 18:16:52,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 18:16:52,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 18:16:52,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 18:16:52,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 18:16:52,340 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 18:16:52,354 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 18:16:53,272 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 18:16:53,288 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 18:16:53,289 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 18:16:53,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:16:53 BoogieIcfgContainer [2022-07-22 18:16:53,293 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 18:16:53,295 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 18:16:53,296 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 18:16:53,299 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 18:16:53,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 06:16:51" (1/3) ... [2022-07-22 18:16:53,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6483639c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:16:53, skipping insertion in model container [2022-07-22 18:16:53,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:16:51" (2/3) ... [2022-07-22 18:16:53,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6483639c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:16:53, skipping insertion in model container [2022-07-22 18:16:53,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:16:53" (3/3) ... [2022-07-22 18:16:53,302 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-07-22 18:16:53,323 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 18:16:53,323 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 18:16:53,396 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 18:16:53,401 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@6d30ff04, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@71afa373 [2022-07-22 18:16:53,401 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 18:16:53,407 INFO L276 IsEmpty]: Start isEmpty. Operand has 326 states, 324 states have (on average 1.7962962962962963) internal successors, (582), 325 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:16:53,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-22 18:16:53,422 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:16:53,422 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] [2022-07-22 18:16:53,423 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:16:53,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:16:53,428 INFO L85 PathProgramCache]: Analyzing trace with hash 430105228, now seen corresponding path program 1 times [2022-07-22 18:16:53,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:16:53,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781442692] [2022-07-22 18:16:53,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:16:53,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:16:53,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:16:53,803 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 18:16:53,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:16:53,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781442692] [2022-07-22 18:16:53,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781442692] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:16:53,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:16:53,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:16:53,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487006119] [2022-07-22 18:16:53,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:16:53,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:16:53,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:16:53,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:16:53,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:16:53,839 INFO L87 Difference]: Start difference. First operand has 326 states, 324 states have (on average 1.7962962962962963) internal successors, (582), 325 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:16:53,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:16:53,947 INFO L93 Difference]: Finished difference Result 589 states and 1021 transitions. [2022-07-22 18:16:53,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:16:53,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-07-22 18:16:53,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:16:53,961 INFO L225 Difference]: With dead ends: 589 [2022-07-22 18:16:53,962 INFO L226 Difference]: Without dead ends: 446 [2022-07-22 18:16:53,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:16:53,968 INFO L413 NwaCegarLoop]: 576 mSDtfsCounter, 232 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 1074 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:16:53,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 1074 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:16:53,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2022-07-22 18:16:54,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 443. [2022-07-22 18:16:54,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 442 states have (on average 1.660633484162896) internal successors, (734), 442 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:16:54,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 734 transitions. [2022-07-22 18:16:54,057 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 734 transitions. Word has length 110 [2022-07-22 18:16:54,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:16:54,058 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 734 transitions. [2022-07-22 18:16:54,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:16:54,058 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 734 transitions. [2022-07-22 18:16:54,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-22 18:16:54,064 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:16:54,064 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] [2022-07-22 18:16:54,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 18:16:54,065 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:16:54,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:16:54,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1228540371, now seen corresponding path program 1 times [2022-07-22 18:16:54,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:16:54,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125836134] [2022-07-22 18:16:54,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:16:54,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:16:54,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:16:54,240 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 18:16:54,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:16:54,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125836134] [2022-07-22 18:16:54,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125836134] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:16:54,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:16:54,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:16:54,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084514955] [2022-07-22 18:16:54,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:16:54,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:16:54,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:16:54,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:16:54,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:16:54,245 INFO L87 Difference]: Start difference. First operand 443 states and 734 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:16:54,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:16:54,309 INFO L93 Difference]: Finished difference Result 933 states and 1550 transitions. [2022-07-22 18:16:54,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:16:54,310 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2022-07-22 18:16:54,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:16:54,314 INFO L225 Difference]: With dead ends: 933 [2022-07-22 18:16:54,315 INFO L226 Difference]: Without dead ends: 679 [2022-07-22 18:16:54,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:16:54,318 INFO L413 NwaCegarLoop]: 533 mSDtfsCounter, 200 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 1028 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:16:54,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 1028 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:16:54,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2022-07-22 18:16:54,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 675. [2022-07-22 18:16:54,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 674 states have (on average 1.6587537091988132) internal successors, (1118), 674 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:16:54,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 1118 transitions. [2022-07-22 18:16:54,386 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 1118 transitions. Word has length 113 [2022-07-22 18:16:54,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:16:54,390 INFO L495 AbstractCegarLoop]: Abstraction has 675 states and 1118 transitions. [2022-07-22 18:16:54,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:16:54,390 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 1118 transitions. [2022-07-22 18:16:54,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-22 18:16:54,404 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:16:54,404 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] [2022-07-22 18:16:54,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 18:16:54,407 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:16:54,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:16:54,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1403707664, now seen corresponding path program 1 times [2022-07-22 18:16:54,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:16:54,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271569417] [2022-07-22 18:16:54,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:16:54,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:16:54,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:16:54,561 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 18:16:54,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:16:54,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271569417] [2022-07-22 18:16:54,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271569417] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:16:54,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:16:54,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:16:54,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539845163] [2022-07-22 18:16:54,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:16:54,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:16:54,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:16:54,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:16:54,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:16:54,567 INFO L87 Difference]: Start difference. First operand 675 states and 1118 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:16:54,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:16:54,654 INFO L93 Difference]: Finished difference Result 1611 states and 2668 transitions. [2022-07-22 18:16:54,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:16:54,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2022-07-22 18:16:54,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:16:54,661 INFO L225 Difference]: With dead ends: 1611 [2022-07-22 18:16:54,661 INFO L226 Difference]: Without dead ends: 1125 [2022-07-22 18:16:54,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:16:54,664 INFO L413 NwaCegarLoop]: 533 mSDtfsCounter, 194 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:16:54,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 1029 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:16:54,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2022-07-22 18:16:54,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1119. [2022-07-22 18:16:54,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 1118 states have (on average 1.6511627906976745) internal successors, (1846), 1118 states have internal predecessors, (1846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:16:54,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 1846 transitions. [2022-07-22 18:16:54,738 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 1846 transitions. Word has length 116 [2022-07-22 18:16:54,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:16:54,739 INFO L495 AbstractCegarLoop]: Abstraction has 1119 states and 1846 transitions. [2022-07-22 18:16:54,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:16:54,740 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 1846 transitions. [2022-07-22 18:16:54,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-22 18:16:54,741 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:16:54,742 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] [2022-07-22 18:16:54,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 18:16:54,742 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:16:54,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:16:54,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1658128561, now seen corresponding path program 1 times [2022-07-22 18:16:54,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:16:54,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526840034] [2022-07-22 18:16:54,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:16:54,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:16:54,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:16:54,820 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 18:16:54,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:16:54,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526840034] [2022-07-22 18:16:54,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526840034] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:16:54,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:16:54,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:16:54,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634003331] [2022-07-22 18:16:54,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:16:54,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:16:54,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:16:54,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:16:54,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:16:54,824 INFO L87 Difference]: Start difference. First operand 1119 states and 1846 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:16:54,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:16:54,976 INFO L93 Difference]: Finished difference Result 2907 states and 4784 transitions. [2022-07-22 18:16:54,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:16:54,977 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2022-07-22 18:16:54,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:16:54,985 INFO L225 Difference]: With dead ends: 2907 [2022-07-22 18:16:54,985 INFO L226 Difference]: Without dead ends: 1977 [2022-07-22 18:16:54,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:16:54,996 INFO L413 NwaCegarLoop]: 533 mSDtfsCounter, 188 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 1030 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:16:54,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 1030 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:16:55,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1977 states. [2022-07-22 18:16:55,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1977 to 1967. [2022-07-22 18:16:55,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1967 states, 1966 states have (on average 1.6388606307222788) internal successors, (3222), 1966 states have internal predecessors, (3222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:16:55,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1967 states to 1967 states and 3222 transitions. [2022-07-22 18:16:55,132 INFO L78 Accepts]: Start accepts. Automaton has 1967 states and 3222 transitions. Word has length 119 [2022-07-22 18:16:55,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:16:55,132 INFO L495 AbstractCegarLoop]: Abstraction has 1967 states and 3222 transitions. [2022-07-22 18:16:55,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:16:55,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1967 states and 3222 transitions. [2022-07-22 18:16:55,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-22 18:16:55,135 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:16:55,135 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] [2022-07-22 18:16:55,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 18:16:55,136 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:16:55,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:16:55,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1735235476, now seen corresponding path program 1 times [2022-07-22 18:16:55,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:16:55,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726869223] [2022-07-22 18:16:55,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:16:55,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:16:55,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:16:55,237 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 18:16:55,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:16:55,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726869223] [2022-07-22 18:16:55,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726869223] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:16:55,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:16:55,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 18:16:55,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656595293] [2022-07-22 18:16:55,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:16:55,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 18:16:55,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:16:55,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 18:16:55,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 18:16:55,240 INFO L87 Difference]: Start difference. First operand 1967 states and 3222 transitions. Second operand has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:16:56,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:16:56,213 INFO L93 Difference]: Finished difference Result 10223 states and 16898 transitions. [2022-07-22 18:16:56,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 18:16:56,213 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2022-07-22 18:16:56,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:16:56,248 INFO L225 Difference]: With dead ends: 10223 [2022-07-22 18:16:56,248 INFO L226 Difference]: Without dead ends: 8445 [2022-07-22 18:16:56,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-22 18:16:56,258 INFO L413 NwaCegarLoop]: 533 mSDtfsCounter, 2053 mSDsluCounter, 3456 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2053 SdHoareTripleChecker+Valid, 3989 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 18:16:56,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2053 Valid, 3989 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 18:16:56,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8445 states. [2022-07-22 18:16:56,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8445 to 3625. [2022-07-22 18:16:56,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3625 states, 3624 states have (on average 1.6382450331125828) internal successors, (5937), 3624 states have internal predecessors, (5937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:16:56,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3625 states to 3625 states and 5937 transitions. [2022-07-22 18:16:56,655 INFO L78 Accepts]: Start accepts. Automaton has 3625 states and 5937 transitions. Word has length 122 [2022-07-22 18:16:56,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:16:56,656 INFO L495 AbstractCegarLoop]: Abstraction has 3625 states and 5937 transitions. [2022-07-22 18:16:56,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:16:56,657 INFO L276 IsEmpty]: Start isEmpty. Operand 3625 states and 5937 transitions. [2022-07-22 18:16:56,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-22 18:16:56,661 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:16:56,661 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] [2022-07-22 18:16:56,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 18:16:56,662 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:16:56,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:16:56,663 INFO L85 PathProgramCache]: Analyzing trace with hash -2109337106, now seen corresponding path program 1 times [2022-07-22 18:16:56,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:16:56,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780660938] [2022-07-22 18:16:56,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:16:56,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:16:56,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:16:56,776 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 18:16:56,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:16:56,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780660938] [2022-07-22 18:16:56,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780660938] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:16:56,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:16:56,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:16:56,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002767028] [2022-07-22 18:16:56,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:16:56,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 18:16:56,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:16:56,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 18:16:56,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 18:16:56,780 INFO L87 Difference]: Start difference. First operand 3625 states and 5937 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:16:57,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:16:57,442 INFO L93 Difference]: Finished difference Result 10605 states and 17475 transitions. [2022-07-22 18:16:57,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 18:16:57,443 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2022-07-22 18:16:57,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:16:57,474 INFO L225 Difference]: With dead ends: 10605 [2022-07-22 18:16:57,475 INFO L226 Difference]: Without dead ends: 7169 [2022-07-22 18:16:57,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:16:57,486 INFO L413 NwaCegarLoop]: 527 mSDtfsCounter, 658 mSDsluCounter, 1078 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 1605 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:16:57,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [658 Valid, 1605 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:16:57,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7169 states. [2022-07-22 18:16:58,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7169 to 5380. [2022-07-22 18:16:58,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5380 states, 5379 states have (on average 1.6417549730433165) internal successors, (8831), 5379 states have internal predecessors, (8831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:16:58,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5380 states to 5380 states and 8831 transitions. [2022-07-22 18:16:58,112 INFO L78 Accepts]: Start accepts. Automaton has 5380 states and 8831 transitions. Word has length 123 [2022-07-22 18:16:58,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:16:58,113 INFO L495 AbstractCegarLoop]: Abstraction has 5380 states and 8831 transitions. [2022-07-22 18:16:58,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:16:58,113 INFO L276 IsEmpty]: Start isEmpty. Operand 5380 states and 8831 transitions. [2022-07-22 18:16:58,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-22 18:16:58,118 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:16:58,118 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:16:58,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 18:16:58,118 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:16:58,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:16:58,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1027444837, now seen corresponding path program 1 times [2022-07-22 18:16:58,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:16:58,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579209164] [2022-07-22 18:16:58,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:16:58,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:16:58,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:16:58,194 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 18:16:58,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:16:58,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579209164] [2022-07-22 18:16:58,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579209164] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:16:58,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:16:58,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:16:58,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329022218] [2022-07-22 18:16:58,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:16:58,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 18:16:58,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:16:58,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 18:16:58,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 18:16:58,198 INFO L87 Difference]: Start difference. First operand 5380 states and 8831 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:16:59,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:16:59,086 INFO L93 Difference]: Finished difference Result 15777 states and 25981 transitions. [2022-07-22 18:16:59,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 18:16:59,125 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-07-22 18:16:59,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:16:59,170 INFO L225 Difference]: With dead ends: 15777 [2022-07-22 18:16:59,170 INFO L226 Difference]: Without dead ends: 10586 [2022-07-22 18:16:59,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:16:59,182 INFO L413 NwaCegarLoop]: 530 mSDtfsCounter, 656 mSDsluCounter, 1127 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 1657 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:16:59,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [656 Valid, 1657 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:16:59,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10586 states. [2022-07-22 18:16:59,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10586 to 7959. [2022-07-22 18:16:59,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7959 states, 7958 states have (on average 1.6406132194018597) internal successors, (13056), 7958 states have internal predecessors, (13056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:17:00,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7959 states to 7959 states and 13056 transitions. [2022-07-22 18:17:00,012 INFO L78 Accepts]: Start accepts. Automaton has 7959 states and 13056 transitions. Word has length 124 [2022-07-22 18:17:00,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:17:00,013 INFO L495 AbstractCegarLoop]: Abstraction has 7959 states and 13056 transitions. [2022-07-22 18:17:00,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:17:00,014 INFO L276 IsEmpty]: Start isEmpty. Operand 7959 states and 13056 transitions. [2022-07-22 18:17:00,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-22 18:17:00,020 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:17:00,020 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] [2022-07-22 18:17:00,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 18:17:00,021 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:17:00,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:17:00,021 INFO L85 PathProgramCache]: Analyzing trace with hash -275676370, now seen corresponding path program 1 times [2022-07-22 18:17:00,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:17:00,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569842632] [2022-07-22 18:17:00,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:17:00,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:17:00,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:17:00,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:17:00,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:17:00,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569842632] [2022-07-22 18:17:00,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569842632] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:17:00,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:17:00,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:17:00,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602819733] [2022-07-22 18:17:00,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:17:00,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:17:00,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:17:00,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:17:00,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:17:00,135 INFO L87 Difference]: Start difference. First operand 7959 states and 13056 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:17:01,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:17:01,070 INFO L93 Difference]: Finished difference Result 15656 states and 25739 transitions. [2022-07-22 18:17:01,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:17:01,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2022-07-22 18:17:01,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:17:01,112 INFO L225 Difference]: With dead ends: 15656 [2022-07-22 18:17:01,112 INFO L226 Difference]: Without dead ends: 11380 [2022-07-22 18:17:01,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:17:01,129 INFO L413 NwaCegarLoop]: 619 mSDtfsCounter, 193 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:17:01,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 1120 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:17:01,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11380 states. [2022-07-22 18:17:01,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11380 to 11378. [2022-07-22 18:17:02,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11378 states, 11377 states have (on average 1.6374263865693943) internal successors, (18629), 11377 states have internal predecessors, (18629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:17:02,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11378 states to 11378 states and 18629 transitions. [2022-07-22 18:17:02,041 INFO L78 Accepts]: Start accepts. Automaton has 11378 states and 18629 transitions. Word has length 125 [2022-07-22 18:17:02,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:17:02,042 INFO L495 AbstractCegarLoop]: Abstraction has 11378 states and 18629 transitions. [2022-07-22 18:17:02,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:17:02,042 INFO L276 IsEmpty]: Start isEmpty. Operand 11378 states and 18629 transitions. [2022-07-22 18:17:02,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-22 18:17:02,045 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:17:02,046 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] [2022-07-22 18:17:02,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 18:17:02,048 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:17:02,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:17:02,048 INFO L85 PathProgramCache]: Analyzing trace with hash 15369622, now seen corresponding path program 1 times [2022-07-22 18:17:02,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:17:02,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550610666] [2022-07-22 18:17:02,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:17:02,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:17:02,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:17:02,149 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 18:17:02,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:17:02,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550610666] [2022-07-22 18:17:02,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550610666] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:17:02,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:17:02,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:17:02,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731524483] [2022-07-22 18:17:02,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:17:02,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:17:02,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:17:02,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:17:02,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:17:02,153 INFO L87 Difference]: Start difference. First operand 11378 states and 18629 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:17:03,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:17:03,402 INFO L93 Difference]: Finished difference Result 22088 states and 36263 transitions. [2022-07-22 18:17:03,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:17:03,402 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2022-07-22 18:17:03,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:17:03,451 INFO L225 Difference]: With dead ends: 22088 [2022-07-22 18:17:03,452 INFO L226 Difference]: Without dead ends: 16096 [2022-07-22 18:17:03,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:17:03,473 INFO L413 NwaCegarLoop]: 592 mSDtfsCounter, 187 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 1094 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:17:03,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 1094 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:17:03,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16096 states. [2022-07-22 18:17:04,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16096 to 16094. [2022-07-22 18:17:04,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16094 states, 16093 states have (on average 1.6340645000932081) internal successors, (26297), 16093 states have internal predecessors, (26297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:17:04,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16094 states to 16094 states and 26297 transitions. [2022-07-22 18:17:04,814 INFO L78 Accepts]: Start accepts. Automaton has 16094 states and 26297 transitions. Word has length 125 [2022-07-22 18:17:04,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:17:04,815 INFO L495 AbstractCegarLoop]: Abstraction has 16094 states and 26297 transitions. [2022-07-22 18:17:04,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:17:04,815 INFO L276 IsEmpty]: Start isEmpty. Operand 16094 states and 26297 transitions. [2022-07-22 18:17:04,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-22 18:17:04,818 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:17:04,818 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] [2022-07-22 18:17:04,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 18:17:04,818 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:17:04,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:17:04,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1843964843, now seen corresponding path program 1 times [2022-07-22 18:17:04,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:17:04,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760862428] [2022-07-22 18:17:04,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:17:04,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:17:04,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:17:04,879 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 18:17:04,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:17:04,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760862428] [2022-07-22 18:17:04,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760862428] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:17:04,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:17:04,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:17:04,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209797312] [2022-07-22 18:17:04,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:17:04,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 18:17:04,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:17:04,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 18:17:04,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 18:17:04,882 INFO L87 Difference]: Start difference. First operand 16094 states and 26297 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:17:07,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:17:07,363 INFO L93 Difference]: Finished difference Result 50960 states and 83572 transitions. [2022-07-22 18:17:07,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 18:17:07,363 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2022-07-22 18:17:07,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:17:07,463 INFO L225 Difference]: With dead ends: 50960 [2022-07-22 18:17:07,463 INFO L226 Difference]: Without dead ends: 35474 [2022-07-22 18:17:07,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:17:07,504 INFO L413 NwaCegarLoop]: 524 mSDtfsCounter, 654 mSDsluCounter, 1026 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 1550 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:17:07,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [654 Valid, 1550 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:17:07,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35474 states. [2022-07-22 18:17:09,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35474 to 25732. [2022-07-22 18:17:09,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25732 states, 25731 states have (on average 1.6325444016944541) internal successors, (42007), 25731 states have internal predecessors, (42007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:17:09,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25732 states to 25732 states and 42007 transitions. [2022-07-22 18:17:09,935 INFO L78 Accepts]: Start accepts. Automaton has 25732 states and 42007 transitions. Word has length 125 [2022-07-22 18:17:09,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:17:09,935 INFO L495 AbstractCegarLoop]: Abstraction has 25732 states and 42007 transitions. [2022-07-22 18:17:09,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:17:09,936 INFO L276 IsEmpty]: Start isEmpty. Operand 25732 states and 42007 transitions. [2022-07-22 18:17:09,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-22 18:17:09,939 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:17:09,939 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] [2022-07-22 18:17:09,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 18:17:09,940 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:17:09,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:17:09,941 INFO L85 PathProgramCache]: Analyzing trace with hash -815921210, now seen corresponding path program 1 times [2022-07-22 18:17:09,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:17:09,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369742193] [2022-07-22 18:17:09,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:17:09,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:17:09,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:17:10,014 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 18:17:10,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:17:10,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369742193] [2022-07-22 18:17:10,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369742193] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:17:10,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:17:10,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:17:10,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676348835] [2022-07-22 18:17:10,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:17:10,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:17:10,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:17:10,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:17:10,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:17:10,017 INFO L87 Difference]: Start difference. First operand 25732 states and 42007 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:17:12,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:17:12,318 INFO L93 Difference]: Finished difference Result 55910 states and 91585 transitions. [2022-07-22 18:17:12,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:17:12,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2022-07-22 18:17:12,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:17:12,433 INFO L225 Difference]: With dead ends: 55910 [2022-07-22 18:17:12,434 INFO L226 Difference]: Without dead ends: 38187 [2022-07-22 18:17:12,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:17:12,485 INFO L413 NwaCegarLoop]: 665 mSDtfsCounter, 199 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 1165 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:17:12,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 1165 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:17:12,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38187 states. [2022-07-22 18:17:15,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38187 to 38185. [2022-07-22 18:17:15,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38185 states, 38184 states have (on average 1.6302639849151477) internal successors, (62250), 38184 states have internal predecessors, (62250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:17:15,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38185 states to 38185 states and 62250 transitions. [2022-07-22 18:17:15,370 INFO L78 Accepts]: Start accepts. Automaton has 38185 states and 62250 transitions. Word has length 125 [2022-07-22 18:17:15,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:17:15,371 INFO L495 AbstractCegarLoop]: Abstraction has 38185 states and 62250 transitions. [2022-07-22 18:17:15,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:17:15,371 INFO L276 IsEmpty]: Start isEmpty. Operand 38185 states and 62250 transitions. [2022-07-22 18:17:15,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-22 18:17:15,373 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:17:15,373 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] [2022-07-22 18:17:15,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 18:17:15,373 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:17:15,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:17:15,374 INFO L85 PathProgramCache]: Analyzing trace with hash 2056786782, now seen corresponding path program 1 times [2022-07-22 18:17:15,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:17:15,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55793116] [2022-07-22 18:17:15,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:17:15,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:17:15,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:17:15,428 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 18:17:15,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:17:15,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55793116] [2022-07-22 18:17:15,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55793116] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:17:15,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:17:15,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:17:15,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133404213] [2022-07-22 18:17:15,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:17:15,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:17:15,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:17:15,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:17:15,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:17:15,431 INFO L87 Difference]: Start difference. First operand 38185 states and 62250 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:17:19,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:17:19,933 INFO L93 Difference]: Finished difference Result 83692 states and 137539 transitions. [2022-07-22 18:17:19,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:17:19,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2022-07-22 18:17:19,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:17:20,084 INFO L225 Difference]: With dead ends: 83692 [2022-07-22 18:17:20,085 INFO L226 Difference]: Without dead ends: 56811 [2022-07-22 18:17:20,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:17:20,133 INFO L413 NwaCegarLoop]: 704 mSDtfsCounter, 205 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:17:20,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 1203 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:17:20,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56811 states. [2022-07-22 18:17:24,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56811 to 56809. [2022-07-22 18:17:24,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56809 states, 56808 states have (on average 1.63212927756654) internal successors, (92718), 56808 states have internal predecessors, (92718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:17:24,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56809 states to 56809 states and 92718 transitions. [2022-07-22 18:17:24,567 INFO L78 Accepts]: Start accepts. Automaton has 56809 states and 92718 transitions. Word has length 125 [2022-07-22 18:17:24,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:17:24,568 INFO L495 AbstractCegarLoop]: Abstraction has 56809 states and 92718 transitions. [2022-07-22 18:17:24,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:17:24,568 INFO L276 IsEmpty]: Start isEmpty. Operand 56809 states and 92718 transitions. [2022-07-22 18:17:24,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-22 18:17:24,569 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:17:24,569 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] [2022-07-22 18:17:24,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 18:17:24,570 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:17:24,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:17:24,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1381723230, now seen corresponding path program 1 times [2022-07-22 18:17:24,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:17:24,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020632156] [2022-07-22 18:17:24,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:17:24,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:17:24,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:17:24,638 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 18:17:24,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:17:24,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020632156] [2022-07-22 18:17:24,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020632156] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:17:24,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:17:24,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:17:24,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868134822] [2022-07-22 18:17:24,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:17:24,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 18:17:24,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:17:24,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 18:17:24,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 18:17:24,641 INFO L87 Difference]: Start difference. First operand 56809 states and 92718 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)