./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/fibo_7-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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/recursive-simple/fibo_7-1.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 17c70baee0bc6a4a26b6403fb6f46125ad9d7f8a7127109634f2327c61aaf5cb --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 18:06:57,113 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 18:06:57,115 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 18:06:57,144 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 18:06:57,146 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 18:06:57,147 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 18:06:57,151 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 18:06:57,153 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 18:06:57,154 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 18:06:57,158 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 18:06:57,159 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 18:06:57,160 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 18:06:57,160 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 18:06:57,162 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 18:06:57,164 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 18:06:57,165 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 18:06:57,166 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 18:06:57,167 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 18:06:57,170 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 18:06:57,174 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 18:06:57,176 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 18:06:57,177 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 18:06:57,177 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 18:06:57,178 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 18:06:57,179 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 18:06:57,188 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 18:06:57,188 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 18:06:57,189 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 18:06:57,190 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 18:06:57,190 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 18:06:57,191 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 18:06:57,191 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 18:06:57,192 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 18:06:57,192 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 18:06:57,193 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 18:06:57,194 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 18:06:57,194 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 18:06:57,194 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 18:06:57,194 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 18:06:57,195 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 18:06:57,195 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 18:06:57,197 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 18:06:57,199 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 18:06:57,220 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 18:06:57,221 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 18:06:57,221 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 18:06:57,221 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 18:06:57,222 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 18:06:57,222 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 18:06:57,222 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 18:06:57,223 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 18:06:57,223 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 18:06:57,223 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 18:06:57,223 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 18:06:57,224 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 18:06:57,224 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 18:06:57,224 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 18:06:57,224 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 18:06:57,224 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 18:06:57,224 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 18:06:57,224 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 18:06:57,225 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 18:06:57,225 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 18:06:57,226 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 18:06:57,226 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 18:06:57,226 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 18:06:57,226 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 18:06:57,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:06:57,226 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 18:06:57,227 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 18:06:57,227 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 18:06:57,227 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 18:06:57,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 18:06:57,227 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 18:06:57,228 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 18:06:57,228 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 18:06:57,228 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 17c70baee0bc6a4a26b6403fb6f46125ad9d7f8a7127109634f2327c61aaf5cb [2022-07-13 18:06:57,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 18:06:57,437 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 18:06:57,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 18:06:57,441 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 18:06:57,442 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 18:06:57,443 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_7-1.c [2022-07-13 18:06:57,503 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a5909c74/b0b55681afc642548293a053609d32cd/FLAG0e71758a2 [2022-07-13 18:06:57,858 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 18:06:57,858 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_7-1.c [2022-07-13 18:06:57,862 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a5909c74/b0b55681afc642548293a053609d32cd/FLAG0e71758a2 [2022-07-13 18:06:57,873 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a5909c74/b0b55681afc642548293a053609d32cd [2022-07-13 18:06:57,875 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 18:06:57,876 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 18:06:57,880 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 18:06:57,880 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 18:06:57,882 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 18:06:57,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:06:57" (1/1) ... [2022-07-13 18:06:57,883 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a796e28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:06:57, skipping insertion in model container [2022-07-13 18:06:57,884 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:06:57" (1/1) ... [2022-07-13 18:06:57,889 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 18:06:57,896 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 18:06:58,013 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/recursive-simple/fibo_7-1.c[741,754] [2022-07-13 18:06:58,015 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:06:58,020 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 18:06:58,029 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/recursive-simple/fibo_7-1.c[741,754] [2022-07-13 18:06:58,033 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:06:58,041 INFO L208 MainTranslator]: Completed translation [2022-07-13 18:06:58,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:06:58 WrapperNode [2022-07-13 18:06:58,042 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 18:06:58,043 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 18:06:58,043 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 18:06:58,043 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 18:06:58,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:06:58" (1/1) ... [2022-07-13 18:06:58,053 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:06:58" (1/1) ... [2022-07-13 18:06:58,063 INFO L137 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2022-07-13 18:06:58,063 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 18:06:58,063 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 18:06:58,064 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 18:06:58,064 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 18:06:58,068 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:06:58" (1/1) ... [2022-07-13 18:06:58,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:06:58" (1/1) ... [2022-07-13 18:06:58,069 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:06:58" (1/1) ... [2022-07-13 18:06:58,070 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:06:58" (1/1) ... [2022-07-13 18:06:58,071 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:06:58" (1/1) ... [2022-07-13 18:06:58,072 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:06:58" (1/1) ... [2022-07-13 18:06:58,073 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:06:58" (1/1) ... [2022-07-13 18:06:58,076 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 18:06:58,076 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 18:06:58,076 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 18:06:58,076 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 18:06:58,077 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:06:58" (1/1) ... [2022-07-13 18:06:58,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:06:58,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:06:58,101 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) [2022-07-13 18:06:58,102 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 [2022-07-13 18:06:58,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 18:06:58,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 18:06:58,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 18:06:58,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 18:06:58,134 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2022-07-13 18:06:58,135 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2022-07-13 18:06:58,183 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 18:06:58,185 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 18:06:58,266 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 18:06:58,270 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 18:06:58,271 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 18:06:58,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:06:58 BoogieIcfgContainer [2022-07-13 18:06:58,281 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 18:06:58,282 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 18:06:58,282 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 18:06:58,285 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 18:06:58,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 06:06:57" (1/3) ... [2022-07-13 18:06:58,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56f29c9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:06:58, skipping insertion in model container [2022-07-13 18:06:58,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:06:58" (2/3) ... [2022-07-13 18:06:58,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56f29c9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:06:58, skipping insertion in model container [2022-07-13 18:06:58,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:06:58" (3/3) ... [2022-07-13 18:06:58,288 INFO L111 eAbstractionObserver]: Analyzing ICFG fibo_7-1.c [2022-07-13 18:06:58,298 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 18:06:58,298 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 18:06:58,339 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 18:06:58,345 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@197d72f7, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@12b554b6 [2022-07-13 18:06:58,345 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 18:06:58,349 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 18:06:58,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-13 18:06:58,355 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:06:58,355 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:06:58,356 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:06:58,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:06:58,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1755511548, now seen corresponding path program 1 times [2022-07-13 18:06:58,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:06:58,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566280584] [2022-07-13 18:06:58,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:06:58,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:06:58,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:06:58,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:06:58,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:06:58,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:06:58,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:06:58,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566280584] [2022-07-13 18:06:58,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566280584] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:06:58,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:06:58,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:06:58,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211043557] [2022-07-13 18:06:58,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:06:58,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:06:58,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:06:58,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:06:58,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:06:58,569 INFO L87 Difference]: Start difference. First operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 18:06:58,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:06:58,633 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2022-07-13 18:06:58,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:06:58,635 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2022-07-13 18:06:58,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:06:58,641 INFO L225 Difference]: With dead ends: 30 [2022-07-13 18:06:58,641 INFO L226 Difference]: Without dead ends: 18 [2022-07-13 18:06:58,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 18:06:58,648 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 15 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:06:58,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 42 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:06:58,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-07-13 18:06:58,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-07-13 18:06:58,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-13 18:06:58,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2022-07-13 18:06:58,681 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 10 [2022-07-13 18:06:58,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:06:58,682 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2022-07-13 18:06:58,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 18:06:58,682 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2022-07-13 18:06:58,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-13 18:06:58,684 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:06:58,684 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:06:58,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 18:06:58,685 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:06:58,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:06:58,686 INFO L85 PathProgramCache]: Analyzing trace with hash 2128459596, now seen corresponding path program 1 times [2022-07-13 18:06:58,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:06:58,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324966683] [2022-07-13 18:06:58,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:06:58,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:06:58,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:06:58,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:06:58,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:06:58,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:06:58,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:06:58,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324966683] [2022-07-13 18:06:58,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324966683] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:06:58,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:06:58,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:06:58,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314661341] [2022-07-13 18:06:58,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:06:58,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:06:58,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:06:58,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:06:58,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:06:58,754 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 18:06:58,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:06:58,797 INFO L93 Difference]: Finished difference Result 24 states and 29 transitions. [2022-07-13 18:06:58,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:06:58,797 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-07-13 18:06:58,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:06:58,798 INFO L225 Difference]: With dead ends: 24 [2022-07-13 18:06:58,798 INFO L226 Difference]: Without dead ends: 20 [2022-07-13 18:06:58,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 18:06:58,800 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 10 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:06:58,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 30 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:06:58,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-07-13 18:06:58,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2022-07-13 18:06:58,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-13 18:06:58,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2022-07-13 18:06:58,805 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 11 [2022-07-13 18:06:58,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:06:58,807 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2022-07-13 18:06:58,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 18:06:58,807 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2022-07-13 18:06:58,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-13 18:06:58,809 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:06:58,809 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:06:58,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 18:06:58,809 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:06:58,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:06:58,810 INFO L85 PathProgramCache]: Analyzing trace with hash -42544313, now seen corresponding path program 1 times [2022-07-13 18:06:58,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:06:58,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280447805] [2022-07-13 18:06:58,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:06:58,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:06:58,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:06:58,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:06:58,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:06:58,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:06:58,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:06:58,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 18:06:58,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:06:58,928 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 18:06:58,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:06:58,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280447805] [2022-07-13 18:06:58,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280447805] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:06:58,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932009959] [2022-07-13 18:06:58,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:06:58,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:06:58,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:06:58,948 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:06:58,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 18:06:58,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:06:58,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 18:06:58,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:06:59,098 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 18:06:59,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 18:06:59,301 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 18:06:59,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932009959] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 18:06:59,302 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 18:06:59,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 12 [2022-07-13 18:06:59,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694139383] [2022-07-13 18:06:59,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 18:06:59,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 18:06:59,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:06:59,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 18:06:59,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-07-13 18:06:59,310 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 12 states have internal predecessors, (30), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-13 18:06:59,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:06:59,387 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2022-07-13 18:06:59,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 18:06:59,387 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 12 states have internal predecessors, (30), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) Word has length 23 [2022-07-13 18:06:59,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:06:59,388 INFO L225 Difference]: With dead ends: 35 [2022-07-13 18:06:59,388 INFO L226 Difference]: Without dead ends: 20 [2022-07-13 18:06:59,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2022-07-13 18:06:59,390 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 21 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:06:59,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 59 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:06:59,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-07-13 18:06:59,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-07-13 18:06:59,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 15 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-13 18:06:59,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2022-07-13 18:06:59,395 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 23 [2022-07-13 18:06:59,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:06:59,395 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2022-07-13 18:06:59,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 12 states have internal predecessors, (30), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-13 18:06:59,396 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2022-07-13 18:06:59,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-13 18:06:59,397 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:06:59,397 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:06:59,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 18:06:59,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:06:59,609 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:06:59,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:06:59,609 INFO L85 PathProgramCache]: Analyzing trace with hash 170813287, now seen corresponding path program 1 times [2022-07-13 18:06:59,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:06:59,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676391457] [2022-07-13 18:06:59,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:06:59,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:06:59,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:06:59,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:06:59,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:06:59,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:06:59,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:06:59,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 18:06:59,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:06:59,679 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 18:06:59,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:06:59,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676391457] [2022-07-13 18:06:59,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676391457] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:06:59,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689819449] [2022-07-13 18:06:59,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:06:59,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:06:59,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:06:59,682 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:06:59,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 18:06:59,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:06:59,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 18:06:59,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:06:59,737 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 18:06:59,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 18:06:59,844 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 18:06:59,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689819449] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 18:06:59,845 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 18:06:59,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 11 [2022-07-13 18:06:59,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570409957] [2022-07-13 18:06:59,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 18:06:59,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 18:06:59,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:06:59,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 18:06:59,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-07-13 18:06:59,847 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 11 states, 9 states have (on average 3.111111111111111) internal successors, (28), 11 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 7 states have call successors, (7) [2022-07-13 18:06:59,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:06:59,907 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions. [2022-07-13 18:06:59,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 18:06:59,908 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 3.111111111111111) internal successors, (28), 11 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 7 states have call successors, (7) Word has length 24 [2022-07-13 18:06:59,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:06:59,909 INFO L225 Difference]: With dead ends: 38 [2022-07-13 18:06:59,909 INFO L226 Difference]: Without dead ends: 34 [2022-07-13 18:06:59,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-07-13 18:06:59,910 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 35 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:06:59,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 44 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:06:59,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-07-13 18:06:59,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-07-13 18:06:59,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 24 states have internal predecessors, (26), 6 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) [2022-07-13 18:06:59,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 48 transitions. [2022-07-13 18:06:59,916 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 48 transitions. Word has length 24 [2022-07-13 18:06:59,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:06:59,917 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 48 transitions. [2022-07-13 18:06:59,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 3.111111111111111) internal successors, (28), 11 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 7 states have call successors, (7) [2022-07-13 18:06:59,917 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 48 transitions. [2022-07-13 18:06:59,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-07-13 18:06:59,918 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:06:59,918 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:06:59,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 18:07:00,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-07-13 18:07:00,137 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:07:00,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:07:00,138 INFO L85 PathProgramCache]: Analyzing trace with hash -187634876, now seen corresponding path program 2 times [2022-07-13 18:07:00,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:07:00,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411984287] [2022-07-13 18:07:00,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:07:00,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:07:00,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:00,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:07:00,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:00,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:00,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:00,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:00,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:00,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 18:07:00,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:00,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 18:07:00,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:00,246 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-13 18:07:00,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:07:00,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411984287] [2022-07-13 18:07:00,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411984287] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:07:00,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202698990] [2022-07-13 18:07:00,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 18:07:00,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:07:00,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:07:00,248 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:07:00,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 18:07:00,289 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 18:07:00,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 18:07:00,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 18:07:00,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:07:00,365 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-13 18:07:00,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 18:07:00,599 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-13 18:07:00,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202698990] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 18:07:00,600 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 18:07:00,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 9] total 17 [2022-07-13 18:07:00,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547109389] [2022-07-13 18:07:00,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 18:07:00,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-13 18:07:00,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:07:00,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-13 18:07:00,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2022-07-13 18:07:00,601 INFO L87 Difference]: Start difference. First operand 34 states and 48 transitions. Second operand has 17 states, 15 states have (on average 2.933333333333333) internal successors, (44), 17 states have internal predecessors, (44), 10 states have call successors, (12), 1 states have call predecessors, (12), 7 states have return successors, (13), 6 states have call predecessors, (13), 10 states have call successors, (13) [2022-07-13 18:07:00,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:07:00,749 INFO L93 Difference]: Finished difference Result 69 states and 106 transitions. [2022-07-13 18:07:00,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 18:07:00,750 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.933333333333333) internal successors, (44), 17 states have internal predecessors, (44), 10 states have call successors, (12), 1 states have call predecessors, (12), 7 states have return successors, (13), 6 states have call predecessors, (13), 10 states have call successors, (13) Word has length 37 [2022-07-13 18:07:00,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:07:00,751 INFO L225 Difference]: With dead ends: 69 [2022-07-13 18:07:00,751 INFO L226 Difference]: Without dead ends: 38 [2022-07-13 18:07:00,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2022-07-13 18:07:00,753 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 44 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:07:00,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 94 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:07:00,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-07-13 18:07:00,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-07-13 18:07:00,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 26 states have internal predecessors, (30), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (11), 7 states have call predecessors, (11), 5 states have call successors, (11) [2022-07-13 18:07:00,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2022-07-13 18:07:00,759 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 37 [2022-07-13 18:07:00,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:07:00,759 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2022-07-13 18:07:00,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.933333333333333) internal successors, (44), 17 states have internal predecessors, (44), 10 states have call successors, (12), 1 states have call predecessors, (12), 7 states have return successors, (13), 6 states have call predecessors, (13), 10 states have call successors, (13) [2022-07-13 18:07:00,760 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2022-07-13 18:07:00,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 18:07:00,761 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:07:00,761 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:07:00,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 18:07:00,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:07:00,968 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:07:00,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:07:00,968 INFO L85 PathProgramCache]: Analyzing trace with hash -2015531204, now seen corresponding path program 3 times [2022-07-13 18:07:00,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:07:00,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800540397] [2022-07-13 18:07:00,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:07:00,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:07:00,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:01,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:07:01,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:01,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:01,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:01,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:01,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:01,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:01,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:01,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 18:07:01,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:01,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 18:07:01,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:01,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 18:07:01,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:01,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:01,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:01,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 18:07:01,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:01,162 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 17 proven. 88 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-13 18:07:01,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:07:01,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800540397] [2022-07-13 18:07:01,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800540397] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:07:01,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400303171] [2022-07-13 18:07:01,166 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 18:07:01,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:07:01,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:07:01,167 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:07:01,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 18:07:01,201 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-07-13 18:07:01,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 18:07:01,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 18:07:01,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:07:01,248 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 65 proven. 22 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-07-13 18:07:01,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 18:07:01,477 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 65 proven. 29 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-07-13 18:07:01,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400303171] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 18:07:01,477 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 18:07:01,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 9] total 17 [2022-07-13 18:07:01,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160020448] [2022-07-13 18:07:01,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 18:07:01,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-13 18:07:01,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:07:01,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-13 18:07:01,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2022-07-13 18:07:01,483 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 17 states, 15 states have (on average 2.933333333333333) internal successors, (44), 17 states have internal predecessors, (44), 10 states have call successors, (14), 1 states have call predecessors, (14), 6 states have return successors, (17), 11 states have call predecessors, (17), 10 states have call successors, (17) [2022-07-13 18:07:01,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:07:01,578 INFO L93 Difference]: Finished difference Result 85 states and 124 transitions. [2022-07-13 18:07:01,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 18:07:01,580 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.933333333333333) internal successors, (44), 17 states have internal predecessors, (44), 10 states have call successors, (14), 1 states have call predecessors, (14), 6 states have return successors, (17), 11 states have call predecessors, (17), 10 states have call successors, (17) Word has length 65 [2022-07-13 18:07:01,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:07:01,584 INFO L225 Difference]: With dead ends: 85 [2022-07-13 18:07:01,584 INFO L226 Difference]: Without dead ends: 50 [2022-07-13 18:07:01,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 138 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2022-07-13 18:07:01,590 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 72 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:07:01,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 58 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:07:01,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-07-13 18:07:01,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 47. [2022-07-13 18:07:01,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 32 states have internal predecessors, (38), 7 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (16), 9 states have call predecessors, (16), 7 states have call successors, (16) [2022-07-13 18:07:01,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 61 transitions. [2022-07-13 18:07:01,603 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 61 transitions. Word has length 65 [2022-07-13 18:07:01,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:07:01,605 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 61 transitions. [2022-07-13 18:07:01,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.933333333333333) internal successors, (44), 17 states have internal predecessors, (44), 10 states have call successors, (14), 1 states have call predecessors, (14), 6 states have return successors, (17), 11 states have call predecessors, (17), 10 states have call successors, (17) [2022-07-13 18:07:01,608 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 61 transitions. [2022-07-13 18:07:01,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-13 18:07:01,609 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:07:01,609 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 17, 10, 10, 10, 10, 10, 10, 10, 7, 4, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:07:01,647 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-13 18:07:01,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:07:01,828 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:07:01,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:07:01,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1033750100, now seen corresponding path program 4 times [2022-07-13 18:07:01,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:07:01,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843468858] [2022-07-13 18:07:01,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:07:01,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:07:01,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:01,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:07:01,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:01,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:01,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:01,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:01,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:01,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:01,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:02,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:02,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:02,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 18:07:02,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:02,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 18:07:02,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:02,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 18:07:02,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:02,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:02,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:02,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 18:07:02,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:02,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-13 18:07:02,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:02,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:02,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:02,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:02,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:02,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:02,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:02,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:02,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:02,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 18:07:02,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:02,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 18:07:02,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:02,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 18:07:02,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:02,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:02,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:02,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 18:07:02,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:02,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-13 18:07:02,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:02,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 57 proven. 377 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2022-07-13 18:07:02,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:07:02,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843468858] [2022-07-13 18:07:02,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843468858] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:07:02,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430522365] [2022-07-13 18:07:02,107 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-13 18:07:02,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:07:02,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:07:02,109 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:07:02,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 18:07:02,168 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-13 18:07:02,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 18:07:02,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-13 18:07:02,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:07:02,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 57 proven. 377 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2022-07-13 18:07:02,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 18:07:02,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 57 proven. 403 refuted. 0 times theorem prover too weak. 696 trivial. 0 not checked. [2022-07-13 18:07:02,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430522365] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 18:07:02,835 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 18:07:02,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 13] total 20 [2022-07-13 18:07:02,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272820667] [2022-07-13 18:07:02,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 18:07:02,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-13 18:07:02,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:07:02,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-13 18:07:02,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2022-07-13 18:07:02,837 INFO L87 Difference]: Start difference. First operand 47 states and 61 transitions. Second operand has 20 states, 18 states have (on average 3.0) internal successors, (54), 20 states have internal predecessors, (54), 17 states have call successors, (18), 1 states have call predecessors, (18), 6 states have return successors, (24), 10 states have call predecessors, (24), 17 states have call successors, (24) [2022-07-13 18:07:02,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:07:02,958 INFO L93 Difference]: Finished difference Result 117 states and 176 transitions. [2022-07-13 18:07:02,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 18:07:02,968 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 3.0) internal successors, (54), 20 states have internal predecessors, (54), 17 states have call successors, (18), 1 states have call predecessors, (18), 6 states have return successors, (24), 10 states have call predecessors, (24), 17 states have call successors, (24) Word has length 147 [2022-07-13 18:07:02,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:07:02,981 INFO L225 Difference]: With dead ends: 117 [2022-07-13 18:07:02,981 INFO L226 Difference]: Without dead ends: 113 [2022-07-13 18:07:02,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=284, Unknown=0, NotChecked=0, Total=420 [2022-07-13 18:07:02,983 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 41 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:07:02,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 85 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:07:02,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-07-13 18:07:03,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 104. [2022-07-13 18:07:03,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 69 states have (on average 1.1884057971014492) internal successors, (82), 68 states have internal predecessors, (82), 21 states have call successors, (21), 9 states have call predecessors, (21), 13 states have return successors, (56), 26 states have call predecessors, (56), 21 states have call successors, (56) [2022-07-13 18:07:03,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 159 transitions. [2022-07-13 18:07:03,004 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 159 transitions. Word has length 147 [2022-07-13 18:07:03,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:07:03,004 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 159 transitions. [2022-07-13 18:07:03,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 3.0) internal successors, (54), 20 states have internal predecessors, (54), 17 states have call successors, (18), 1 states have call predecessors, (18), 6 states have return successors, (24), 10 states have call predecessors, (24), 17 states have call successors, (24) [2022-07-13 18:07:03,004 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 159 transitions. [2022-07-13 18:07:03,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-07-13 18:07:03,006 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:07:03,006 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 23, 14, 14, 14, 14, 14, 14, 14, 9, 6, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:07:03,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-13 18:07:03,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:07:03,223 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:07:03,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:07:03,224 INFO L85 PathProgramCache]: Analyzing trace with hash -943421620, now seen corresponding path program 5 times [2022-07-13 18:07:03,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:07:03,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702316702] [2022-07-13 18:07:03,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:07:03,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:07:03,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:03,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:07:03,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:03,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:03,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:03,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:03,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:03,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:03,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:03,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:03,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:03,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:03,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:03,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 18:07:03,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:03,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 18:07:03,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:03,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 18:07:03,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:03,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:03,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:03,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 18:07:03,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:03,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-13 18:07:03,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:03,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:03,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:03,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:03,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:03,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 18:07:03,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:03,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 18:07:03,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:03,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 18:07:03,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:03,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:03,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:03,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:03,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:03,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:03,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:03,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:03,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:03,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 18:07:03,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:03,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 18:07:03,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:03,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 18:07:03,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:03,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:03,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:03,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 18:07:03,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:03,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-13 18:07:03,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:03,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:03,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:03,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 18:07:03,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:03,560 INFO L134 CoverageAnalysis]: Checked inductivity of 2241 backedges. 393 proven. 617 refuted. 0 times theorem prover too weak. 1231 trivial. 0 not checked. [2022-07-13 18:07:03,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:07:03,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702316702] [2022-07-13 18:07:03,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702316702] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:07:03,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311770742] [2022-07-13 18:07:03,561 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-13 18:07:03,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:07:03,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:07:03,562 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:07:03,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 18:07:03,642 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2022-07-13 18:07:03,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 18:07:03,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-13 18:07:03,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:07:03,791 INFO L134 CoverageAnalysis]: Checked inductivity of 2241 backedges. 620 proven. 476 refuted. 0 times theorem prover too weak. 1145 trivial. 0 not checked. [2022-07-13 18:07:03,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 18:07:05,006 INFO L134 CoverageAnalysis]: Checked inductivity of 2241 backedges. 622 proven. 510 refuted. 0 times theorem prover too weak. 1109 trivial. 0 not checked. [2022-07-13 18:07:05,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311770742] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 18:07:05,006 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 18:07:05,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 14, 21] total 34 [2022-07-13 18:07:05,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820026491] [2022-07-13 18:07:05,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 18:07:05,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-07-13 18:07:05,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:07:05,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-07-13 18:07:05,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=868, Unknown=0, NotChecked=0, Total=1122 [2022-07-13 18:07:05,009 INFO L87 Difference]: Start difference. First operand 104 states and 159 transitions. Second operand has 34 states, 33 states have (on average 2.757575757575758) internal successors, (91), 34 states have internal predecessors, (91), 24 states have call successors, (31), 1 states have call predecessors, (31), 13 states have return successors, (42), 21 states have call predecessors, (42), 24 states have call successors, (42) [2022-07-13 18:07:05,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:07:05,429 INFO L93 Difference]: Finished difference Result 193 states and 365 transitions. [2022-07-13 18:07:05,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-13 18:07:05,431 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.757575757575758) internal successors, (91), 34 states have internal predecessors, (91), 24 states have call successors, (31), 1 states have call predecessors, (31), 13 states have return successors, (42), 21 states have call predecessors, (42), 24 states have call successors, (42) Word has length 201 [2022-07-13 18:07:05,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:07:05,432 INFO L225 Difference]: With dead ends: 193 [2022-07-13 18:07:05,432 INFO L226 Difference]: Without dead ends: 95 [2022-07-13 18:07:05,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 441 SyntacticMatches, 5 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 782 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=650, Invalid=2002, Unknown=0, NotChecked=0, Total=2652 [2022-07-13 18:07:05,434 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 212 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 297 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 297 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:07:05,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 162 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [297 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 18:07:05,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-07-13 18:07:05,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 84. [2022-07-13 18:07:05,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 60 states have (on average 1.0333333333333334) internal successors, (62), 58 states have internal predecessors, (62), 15 states have call successors, (15), 12 states have call predecessors, (15), 8 states have return successors, (36), 13 states have call predecessors, (36), 15 states have call successors, (36) [2022-07-13 18:07:05,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 113 transitions. [2022-07-13 18:07:05,441 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 113 transitions. Word has length 201 [2022-07-13 18:07:05,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:07:05,441 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 113 transitions. [2022-07-13 18:07:05,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.757575757575758) internal successors, (91), 34 states have internal predecessors, (91), 24 states have call successors, (31), 1 states have call predecessors, (31), 13 states have return successors, (42), 21 states have call predecessors, (42), 24 states have call successors, (42) [2022-07-13 18:07:05,442 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 113 transitions. [2022-07-13 18:07:05,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2022-07-13 18:07:05,444 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:07:05,444 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 33, 20, 20, 20, 20, 20, 20, 20, 13, 8, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:07:05,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-13 18:07:05,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:07:05,660 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:07:05,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:07:05,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1099173212, now seen corresponding path program 6 times [2022-07-13 18:07:05,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:07:05,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542452714] [2022-07-13 18:07:05,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:07:05,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:07:05,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:05,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:07:05,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:05,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:05,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:05,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:05,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:05,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:05,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:06,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:06,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:06,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:06,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:06,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:06,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:06,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 18:07:06,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:06,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 18:07:06,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:06,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 18:07:06,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:06,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:06,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:06,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 18:07:06,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:06,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-13 18:07:06,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:06,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:06,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:06,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:06,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:06,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 18:07:06,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:06,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 18:07:06,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:06,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 18:07:06,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:06,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:06,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:06,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:06,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:06,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:06,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:06,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 18:07:06,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:06,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 18:07:06,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:06,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 18:07:06,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:06,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:06,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:06,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 18:07:06,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:06,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-07-13 18:07:06,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:06,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:06,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:06,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:06,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:06,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:06,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:06,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:06,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:06,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 18:07:06,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:06,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 18:07:06,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:06,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 18:07:06,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:06,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:06,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:06,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 18:07:06,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:06,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-13 18:07:06,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:06,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:06,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:06,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:06,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:06,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 18:07:06,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:06,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 18:07:06,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:06,421 INFO L134 CoverageAnalysis]: Checked inductivity of 4568 backedges. 0 proven. 1500 refuted. 0 times theorem prover too weak. 3068 trivial. 0 not checked. [2022-07-13 18:07:06,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:07:06,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542452714] [2022-07-13 18:07:06,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542452714] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:07:06,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676893958] [2022-07-13 18:07:06,422 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-13 18:07:06,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:07:06,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:07:06,423 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:07:06,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-13 18:07:06,561 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 41 check-sat command(s) [2022-07-13 18:07:06,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 18:07:06,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 167 conjunts are in the unsatisfiable core [2022-07-13 18:07:06,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:07:07,365 INFO L134 CoverageAnalysis]: Checked inductivity of 4568 backedges. 0 proven. 1500 refuted. 0 times theorem prover too weak. 3068 trivial. 0 not checked. [2022-07-13 18:07:07,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 18:07:08,905 INFO L134 CoverageAnalysis]: Checked inductivity of 4568 backedges. 0 proven. 1500 refuted. 0 times theorem prover too weak. 3068 trivial. 0 not checked. [2022-07-13 18:07:08,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676893958] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 18:07:08,905 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 18:07:08,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 28 [2022-07-13 18:07:08,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485543614] [2022-07-13 18:07:08,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 18:07:08,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-13 18:07:08,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:07:08,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-13 18:07:08,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2022-07-13 18:07:08,907 INFO L87 Difference]: Start difference. First operand 84 states and 113 transitions. Second operand has 28 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 15 states have internal predecessors, (34), 6 states have call successors, (7), 1 states have call predecessors, (7), 7 states have return successors, (18), 18 states have call predecessors, (18), 6 states have call successors, (18) [2022-07-13 18:07:09,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:07:09,204 INFO L93 Difference]: Finished difference Result 105 states and 155 transitions. [2022-07-13 18:07:09,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-13 18:07:09,204 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 15 states have internal predecessors, (34), 6 states have call successors, (7), 1 states have call predecessors, (7), 7 states have return successors, (18), 18 states have call predecessors, (18), 6 states have call successors, (18) Word has length 283 [2022-07-13 18:07:09,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:07:09,206 INFO L225 Difference]: With dead ends: 105 [2022-07-13 18:07:09,206 INFO L226 Difference]: Without dead ends: 101 [2022-07-13 18:07:09,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 731 GetRequests, 681 SyntacticMatches, 24 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2022-07-13 18:07:09,208 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 0 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 18:07:09,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 629 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 18:07:09,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-07-13 18:07:09,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 94. [2022-07-13 18:07:09,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 66 states have (on average 1.0303030303030303) internal successors, (68), 64 states have internal predecessors, (68), 17 states have call successors, (17), 12 states have call predecessors, (17), 10 states have return successors, (54), 17 states have call predecessors, (54), 17 states have call successors, (54) [2022-07-13 18:07:09,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 139 transitions. [2022-07-13 18:07:09,229 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 139 transitions. Word has length 283 [2022-07-13 18:07:09,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:07:09,230 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 139 transitions. [2022-07-13 18:07:09,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 15 states have internal predecessors, (34), 6 states have call successors, (7), 1 states have call predecessors, (7), 7 states have return successors, (18), 18 states have call predecessors, (18), 6 states have call successors, (18) [2022-07-13 18:07:09,231 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 139 transitions. [2022-07-13 18:07:09,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2022-07-13 18:07:09,234 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:07:09,235 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 38, 23, 23, 23, 23, 23, 23, 23, 15, 9, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:07:09,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-13 18:07:09,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:07:09,444 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:07:09,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:07:09,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1334891743, now seen corresponding path program 7 times [2022-07-13 18:07:09,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:07:09,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293264815] [2022-07-13 18:07:09,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:07:09,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:07:09,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:09,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:07:09,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:09,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:09,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:09,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:09,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:09,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:09,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:09,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:09,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:09,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:09,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:09,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:09,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:09,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 18:07:09,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:09,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 18:07:09,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:09,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 18:07:09,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:09,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:09,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:09,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 18:07:09,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:09,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-13 18:07:09,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:09,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:09,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:09,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:09,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:09,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 18:07:09,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:09,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 18:07:09,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:09,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 18:07:09,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:09,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:09,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:09,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:09,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:09,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:09,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:09,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 18:07:09,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:09,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 18:07:09,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:09,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 18:07:09,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:09,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:09,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:09,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 18:07:09,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:09,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-07-13 18:07:09,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:09,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:09,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:09,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:09,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:09,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:09,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:09,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:09,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:09,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:09,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:09,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 18:07:09,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:09,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 18:07:09,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:09,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 18:07:09,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:09,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:09,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:09,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 18:07:09,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:09,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-13 18:07:09,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:09,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:09,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:09,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:09,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:09,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 18:07:09,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:09,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 18:07:09,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:09,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 18:07:09,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:09,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:09,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:09,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:09,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:09,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 18:07:09,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:09,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 18:07:09,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:09,918 INFO L134 CoverageAnalysis]: Checked inductivity of 6039 backedges. 1307 proven. 1260 refuted. 0 times theorem prover too weak. 3472 trivial. 0 not checked. [2022-07-13 18:07:09,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:07:09,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293264815] [2022-07-13 18:07:09,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293264815] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:07:09,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72379127] [2022-07-13 18:07:09,919 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-13 18:07:09,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:07:09,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:07:09,920 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:07:09,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-13 18:07:10,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:10,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 742 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-13 18:07:10,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:07:10,152 INFO L134 CoverageAnalysis]: Checked inductivity of 6039 backedges. 1091 proven. 467 refuted. 0 times theorem prover too weak. 4481 trivial. 0 not checked. [2022-07-13 18:07:10,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 18:07:11,622 INFO L134 CoverageAnalysis]: Checked inductivity of 6039 backedges. 1091 proven. 518 refuted. 0 times theorem prover too weak. 4430 trivial. 0 not checked. [2022-07-13 18:07:11,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72379127] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 18:07:11,622 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 18:07:11,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 11, 17] total 35 [2022-07-13 18:07:11,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826129890] [2022-07-13 18:07:11,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 18:07:11,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-07-13 18:07:11,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:07:11,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-07-13 18:07:11,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=930, Unknown=0, NotChecked=0, Total=1190 [2022-07-13 18:07:11,627 INFO L87 Difference]: Start difference. First operand 94 states and 139 transitions. Second operand has 35 states, 34 states have (on average 2.5588235294117645) internal successors, (87), 35 states have internal predecessors, (87), 24 states have call successors, (29), 1 states have call predecessors, (29), 15 states have return successors, (43), 25 states have call predecessors, (43), 24 states have call successors, (43) [2022-07-13 18:07:12,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:07:12,269 INFO L93 Difference]: Finished difference Result 227 states and 449 transitions. [2022-07-13 18:07:12,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-13 18:07:12,269 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.5588235294117645) internal successors, (87), 35 states have internal predecessors, (87), 24 states have call successors, (29), 1 states have call predecessors, (29), 15 states have return successors, (43), 25 states have call predecessors, (43), 24 states have call successors, (43) Word has length 324 [2022-07-13 18:07:12,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:07:12,271 INFO L225 Difference]: With dead ends: 227 [2022-07-13 18:07:12,271 INFO L226 Difference]: Without dead ends: 124 [2022-07-13 18:07:12,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 793 GetRequests, 734 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=765, Invalid=2657, Unknown=0, NotChecked=0, Total=3422 [2022-07-13 18:07:12,273 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 244 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 1156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 18:07:12,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 232 Invalid, 1156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 18:07:12,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-07-13 18:07:12,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 110. [2022-07-13 18:07:12,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 78 states have (on average 1.0256410256410255) internal successors, (80), 76 states have internal predecessors, (80), 21 states have call successors, (21), 16 states have call predecessors, (21), 10 states have return successors, (46), 17 states have call predecessors, (46), 21 states have call successors, (46) [2022-07-13 18:07:12,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 147 transitions. [2022-07-13 18:07:12,284 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 147 transitions. Word has length 324 [2022-07-13 18:07:12,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:07:12,284 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 147 transitions. [2022-07-13 18:07:12,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.5588235294117645) internal successors, (87), 35 states have internal predecessors, (87), 24 states have call successors, (29), 1 states have call predecessors, (29), 15 states have return successors, (43), 25 states have call predecessors, (43), 24 states have call successors, (43) [2022-07-13 18:07:12,284 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 147 transitions. [2022-07-13 18:07:12,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2022-07-13 18:07:12,287 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:07:12,287 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 41, 25, 25, 25, 25, 25, 25, 25, 16, 10, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:07:12,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-13 18:07:12,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-13 18:07:12,501 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:07:12,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:07:12,502 INFO L85 PathProgramCache]: Analyzing trace with hash -127946809, now seen corresponding path program 8 times [2022-07-13 18:07:12,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:07:12,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61811875] [2022-07-13 18:07:12,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:07:12,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:07:12,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:12,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:07:12,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:12,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:12,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:12,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:12,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:12,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:12,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:12,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:12,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:12,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:12,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:12,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:12,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:12,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:12,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:12,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 18:07:12,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:12,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 18:07:12,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:12,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 18:07:12,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:12,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:12,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:12,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 18:07:12,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:12,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-13 18:07:12,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:12,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:12,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:12,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:12,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:12,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 18:07:12,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:12,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 18:07:12,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:12,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 18:07:12,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:12,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:12,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:12,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:12,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:12,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:12,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:12,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 18:07:12,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:12,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 18:07:12,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:12,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 18:07:12,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:12,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:12,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:12,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 18:07:12,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:12,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-07-13 18:07:12,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:12,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:12,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:12,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:12,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:12,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:12,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:12,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 18:07:12,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:12,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 18:07:12,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:12,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 18:07:12,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:12,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:12,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:12,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 18:07:12,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:12,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-07-13 18:07:12,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:12,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:12,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:12,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:12,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:12,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:12,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:12,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:12,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:12,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 18:07:12,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:12,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 18:07:12,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:12,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 18:07:12,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:12,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:12,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:12,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 18:07:12,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:12,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-13 18:07:12,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:12,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:12,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:12,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:07:12,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:12,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 18:07:12,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:12,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 18:07:12,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:07:12,969 INFO L134 CoverageAnalysis]: Checked inductivity of 7120 backedges. 913 proven. 1281 refuted. 0 times theorem prover too weak. 4926 trivial. 0 not checked. [2022-07-13 18:07:12,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:07:12,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61811875] [2022-07-13 18:07:12,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61811875] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:07:12,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669254324] [2022-07-13 18:07:12,969 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 18:07:12,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:07:12,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:07:12,970 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:07:12,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-13 18:07:13,120 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 18:07:13,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 18:07:13,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 802 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-13 18:07:13,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:07:13,217 INFO L134 CoverageAnalysis]: Checked inductivity of 7120 backedges. 419 proven. 1507 refuted. 0 times theorem prover too weak. 5194 trivial. 0 not checked. [2022-07-13 18:07:13,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 18:07:14,998 INFO L134 CoverageAnalysis]: Checked inductivity of 7120 backedges. 419 proven. 1577 refuted. 0 times theorem prover too weak. 5124 trivial. 0 not checked. [2022-07-13 18:07:14,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669254324] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 18:07:14,999 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 18:07:14,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 12, 19] total 33 [2022-07-13 18:07:14,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22917962] [2022-07-13 18:07:14,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 18:07:15,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-07-13 18:07:15,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:07:15,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-07-13 18:07:15,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=807, Unknown=0, NotChecked=0, Total=1056 [2022-07-13 18:07:15,000 INFO L87 Difference]: Start difference. First operand 110 states and 147 transitions. Second operand has 33 states, 32 states have (on average 2.71875) internal successors, (87), 33 states have internal predecessors, (87), 26 states have call successors, (29), 1 states have call predecessors, (29), 14 states have return successors, (43), 20 states have call predecessors, (43), 26 states have call successors, (43) [2022-07-13 18:07:15,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:07:15,358 INFO L93 Difference]: Finished difference Result 211 states and 294 transitions. [2022-07-13 18:07:15,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-13 18:07:15,358 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.71875) internal successors, (87), 33 states have internal predecessors, (87), 26 states have call successors, (29), 1 states have call predecessors, (29), 14 states have return successors, (43), 20 states have call predecessors, (43), 26 states have call successors, (43) Word has length 351 [2022-07-13 18:07:15,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:07:15,359 INFO L225 Difference]: With dead ends: 211 [2022-07-13 18:07:15,359 INFO L226 Difference]: Without dead ends: 0 [2022-07-13 18:07:15,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 834 GetRequests, 790 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=469, Invalid=1423, Unknown=0, NotChecked=0, Total=1892 [2022-07-13 18:07:15,360 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 98 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:07:15,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 202 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 613 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 18:07:15,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-13 18:07:15,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-13 18:07:15,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-07-13 18:07:15,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-13 18:07:15,361 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 351 [2022-07-13 18:07:15,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:07:15,361 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-13 18:07:15,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 2.71875) internal successors, (87), 33 states have internal predecessors, (87), 26 states have call successors, (29), 1 states have call predecessors, (29), 14 states have return successors, (43), 20 states have call predecessors, (43), 26 states have call successors, (43) [2022-07-13 18:07:15,361 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-13 18:07:15,361 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-13 18:07:15,364 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-13 18:07:15,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-13 18:07:15,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:07:15,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-13 18:07:16,020 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-13 18:07:16,020 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-13 18:07:16,020 INFO L895 garLoopResultBuilder]: At program point L31(lines 25 32) the Hoare annotation is: (<= 7 |ULTIMATE.start_main_~x~0#1|) [2022-07-13 18:07:16,021 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-13 18:07:16,021 INFO L899 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2022-07-13 18:07:16,021 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-13 18:07:16,021 INFO L899 garLoopResultBuilder]: For program point L28(lines 28 30) no Hoare annotation was computed. [2022-07-13 18:07:16,021 INFO L895 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (and (<= 7 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 7)) [2022-07-13 18:07:16,021 INFO L899 garLoopResultBuilder]: For program point L27-1(line 27) no Hoare annotation was computed. [2022-07-13 18:07:16,021 INFO L899 garLoopResultBuilder]: For program point L28-2(lines 28 30) no Hoare annotation was computed. [2022-07-13 18:07:16,021 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 29) no Hoare annotation was computed. [2022-07-13 18:07:16,021 INFO L899 garLoopResultBuilder]: For program point fiboEXIT(lines 7 15) no Hoare annotation was computed. [2022-07-13 18:07:16,022 INFO L899 garLoopResultBuilder]: For program point fiboFINAL(lines 7 15) no Hoare annotation was computed. [2022-07-13 18:07:16,022 INFO L895 garLoopResultBuilder]: At program point L13(line 13) the Hoare annotation is: (and (not (<= fibo_~n 1)) (= fibo_~n |fibo_#in~n|)) [2022-07-13 18:07:16,022 INFO L899 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2022-07-13 18:07:16,022 INFO L895 garLoopResultBuilder]: At program point L13-2(line 13) the Hoare annotation is: (and (let ((.cse0 (= fibo_~n |fibo_#in~n|))) (or (and .cse0 (<= 3 |fibo_#t~ret4|) (<= 5 fibo_~n) (<= |fibo_#t~ret4| 3)) (and .cse0 (<= 6 |fibo_#in~n|)) (and (<= 4 |fibo_#in~n|) .cse0 (<= |fibo_#t~ret4| 2) (<= fibo_~n 4) (<= 2 |fibo_#t~ret4|)) (and .cse0 (<= |fibo_#t~ret4| 1) (<= 1 |fibo_#t~ret4|) (<= fibo_~n 3)))) (not (<= fibo_~n 1)) (or (and (<= |fibo_#t~ret4| 5) (<= 5 |fibo_#t~ret4|) (<= fibo_~n 6)) (<= 8 |fibo_#in~n|) (and (<= |fibo_#t~ret4| 8) (<= 7 fibo_~n) (<= 8 |fibo_#t~ret4|)) (<= fibo_~n 5))) [2022-07-13 18:07:16,022 INFO L899 garLoopResultBuilder]: For program point L10(lines 10 14) no Hoare annotation was computed. [2022-07-13 18:07:16,022 INFO L899 garLoopResultBuilder]: For program point L13-3(line 13) no Hoare annotation was computed. [2022-07-13 18:07:16,022 INFO L899 garLoopResultBuilder]: For program point L8(lines 8 14) no Hoare annotation was computed. [2022-07-13 18:07:16,022 INFO L902 garLoopResultBuilder]: At program point fiboENTRY(lines 7 15) the Hoare annotation is: true [2022-07-13 18:07:16,025 INFO L356 BasicCegarLoop]: Path program histogram: [8, 1, 1, 1] [2022-07-13 18:07:16,031 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 18:07:16,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 06:07:16 BoogieIcfgContainer [2022-07-13 18:07:16,042 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 18:07:16,043 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 18:07:16,043 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 18:07:16,043 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 18:07:16,044 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:06:58" (3/4) ... [2022-07-13 18:07:16,046 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-13 18:07:16,050 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo [2022-07-13 18:07:16,054 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2022-07-13 18:07:16,054 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-13 18:07:16,054 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-13 18:07:16,054 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-13 18:07:16,080 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-13 18:07:16,080 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 18:07:16,080 INFO L158 Benchmark]: Toolchain (without parser) took 18204.32ms. Allocated memory was 117.4MB in the beginning and 207.6MB in the end (delta: 90.2MB). Free memory was 81.5MB in the beginning and 100.5MB in the end (delta: -19.0MB). Peak memory consumption was 71.6MB. Max. memory is 16.1GB. [2022-07-13 18:07:16,081 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 77.6MB. Free memory was 36.9MB in the beginning and 36.9MB in the end (delta: 39.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 18:07:16,081 INFO L158 Benchmark]: CACSL2BoogieTranslator took 162.48ms. Allocated memory is still 117.4MB. Free memory was 81.3MB in the beginning and 90.6MB in the end (delta: -9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 18:07:16,081 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.26ms. Allocated memory is still 117.4MB. Free memory was 90.6MB in the beginning and 89.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 18:07:16,081 INFO L158 Benchmark]: Boogie Preprocessor took 12.22ms. Allocated memory is still 117.4MB. Free memory was 89.2MB in the beginning and 88.6MB in the end (delta: 567.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 18:07:16,081 INFO L158 Benchmark]: RCFGBuilder took 204.94ms. Allocated memory is still 117.4MB. Free memory was 88.6MB in the beginning and 79.9MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 18:07:16,082 INFO L158 Benchmark]: TraceAbstraction took 17759.74ms. Allocated memory was 117.4MB in the beginning and 207.6MB in the end (delta: 90.2MB). Free memory was 79.3MB in the beginning and 102.6MB in the end (delta: -23.3MB). Peak memory consumption was 68.5MB. Max. memory is 16.1GB. [2022-07-13 18:07:16,082 INFO L158 Benchmark]: Witness Printer took 37.45ms. Allocated memory is still 207.6MB. Free memory was 102.6MB in the beginning and 100.5MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 18:07:16,083 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 77.6MB. Free memory was 36.9MB in the beginning and 36.9MB in the end (delta: 39.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 162.48ms. Allocated memory is still 117.4MB. Free memory was 81.3MB in the beginning and 90.6MB in the end (delta: -9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.26ms. Allocated memory is still 117.4MB. Free memory was 90.6MB in the beginning and 89.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 12.22ms. Allocated memory is still 117.4MB. Free memory was 89.2MB in the beginning and 88.6MB in the end (delta: 567.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 204.94ms. Allocated memory is still 117.4MB. Free memory was 88.6MB in the beginning and 79.9MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 17759.74ms. Allocated memory was 117.4MB in the beginning and 207.6MB in the end (delta: 90.2MB). Free memory was 79.3MB in the beginning and 102.6MB in the end (delta: -23.3MB). Peak memory consumption was 68.5MB. Max. memory is 16.1GB. * Witness Printer took 37.45ms. Allocated memory is still 207.6MB. Free memory was 102.6MB in the beginning and 100.5MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 29]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 17.7s, OverallIterations: 11, TraceHistogramMax: 51, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 853 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 792 mSDsluCounter, 1637 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1382 mSDsCounter, 1048 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2999 IncrementalHoareTripleChecker+Invalid, 4047 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1048 mSolverCounterUnsat, 255 mSDtfsCounter, 2999 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3595 GetRequests, 3292 SyntacticMatches, 39 SemanticMatches, 264 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2787 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=110occurred in iteration=10, InterpolantAutomatonStates: 180, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 46 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 272 PreInvPairs, 405 NumberOfFragments, 101 HoareAnnotationTreeSize, 272 FomulaSimplifications, 1123 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 5 FomulaSimplificationsInter, 2444 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 11.6s InterpolantComputationTime, 2931 NumberOfCodeBlocks, 2851 NumberOfCodeBlocksAsserted, 86 NumberOfCheckSat, 4357 ConstructedInterpolants, 0 QuantifiedInterpolants, 9749 SizeOfPredicates, 41 NumberOfNonLiveVariables, 3199 ConjunctsInSsa, 261 ConjunctsInUnsatCore, 29 InterpolantComputations, 2 PerfectInterpolantSequences, 50054/64155 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 7 <= x RESULT: Ultimate proved your program to be correct! [2022-07-13 18:07:16,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE