./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-crafted/bAnd5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-crafted/bAnd5.i -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 d475be4701a825f0568ebf884900dce77e1216a215283bc51d05a41cc9a8ddb5 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-11 22:35:52,149 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-11 22:35:52,150 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-11 22:35:52,179 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-11 22:35:52,179 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-11 22:35:52,180 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-11 22:35:52,182 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-11 22:35:52,186 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-11 22:35:52,187 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-11 22:35:52,190 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-11 22:35:52,191 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-11 22:35:52,193 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-11 22:35:52,193 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-11 22:35:52,195 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-11 22:35:52,196 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-11 22:35:52,198 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-11 22:35:52,199 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-11 22:35:52,200 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-11 22:35:52,201 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-11 22:35:52,205 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-11 22:35:52,206 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-11 22:35:52,207 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-11 22:35:52,207 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-11 22:35:52,208 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-11 22:35:52,209 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-11 22:35:52,216 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-11 22:35:52,216 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-11 22:35:52,216 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-11 22:35:52,218 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-11 22:35:52,218 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-11 22:35:52,219 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-11 22:35:52,219 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-11 22:35:52,220 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-11 22:35:52,221 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-11 22:35:52,221 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-11 22:35:52,222 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-11 22:35:52,222 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-11 22:35:52,222 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-11 22:35:52,222 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-11 22:35:52,223 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-11 22:35:52,224 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-11 22:35:52,225 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-11 22:35:52,226 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-11 22:35:52,252 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-11 22:35:52,253 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-11 22:35:52,253 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-11 22:35:52,253 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-11 22:35:52,253 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-11 22:35:52,254 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-11 22:35:52,254 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-11 22:35:52,254 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-11 22:35:52,254 INFO L138 SettingsManager]: * Use SBE=true [2022-07-11 22:35:52,255 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-11 22:35:52,255 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-11 22:35:52,255 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-11 22:35:52,256 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-11 22:35:52,256 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-11 22:35:52,256 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-11 22:35:52,256 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-11 22:35:52,256 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-11 22:35:52,256 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-11 22:35:52,256 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-11 22:35:52,257 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-11 22:35:52,258 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-11 22:35:52,258 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-11 22:35:52,258 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-11 22:35:52,258 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-11 22:35:52,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-11 22:35:52,258 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-11 22:35:52,259 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-11 22:35:52,259 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-11 22:35:52,259 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-11 22:35:52,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-11 22:35:52,259 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-11 22:35:52,260 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-11 22:35:52,260 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-11 22:35:52,260 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d475be4701a825f0568ebf884900dce77e1216a215283bc51d05a41cc9a8ddb5 [2022-07-11 22:35:52,466 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-11 22:35:52,485 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-11 22:35:52,486 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-11 22:35:52,487 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-11 22:35:52,488 INFO L275 PluginConnector]: CDTParser initialized [2022-07-11 22:35:52,488 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-crafted/bAnd5.i [2022-07-11 22:35:52,536 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bff82aa3/93bf041004c34d528774e3ee0e70c5db/FLAG94ea4b33f [2022-07-11 22:35:52,913 INFO L306 CDTParser]: Found 1 translation units. [2022-07-11 22:35:52,914 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/bAnd5.i [2022-07-11 22:35:52,918 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bff82aa3/93bf041004c34d528774e3ee0e70c5db/FLAG94ea4b33f [2022-07-11 22:35:52,927 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bff82aa3/93bf041004c34d528774e3ee0e70c5db [2022-07-11 22:35:52,929 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-11 22:35:52,930 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-11 22:35:52,931 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-11 22:35:52,931 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-11 22:35:52,933 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-11 22:35:52,934 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 10:35:52" (1/1) ... [2022-07-11 22:35:52,934 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bbbb949 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:35:52, skipping insertion in model container [2022-07-11 22:35:52,935 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 10:35:52" (1/1) ... [2022-07-11 22:35:52,939 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-11 22:35:52,949 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-11 22:35:53,087 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/array-crafted/bAnd5.i[1369,1382] [2022-07-11 22:35:53,093 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-11 22:35:53,101 INFO L203 MainTranslator]: Completed pre-run [2022-07-11 22:35:53,134 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/array-crafted/bAnd5.i[1369,1382] [2022-07-11 22:35:53,136 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-11 22:35:53,144 INFO L208 MainTranslator]: Completed translation [2022-07-11 22:35:53,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:35:53 WrapperNode [2022-07-11 22:35:53,145 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-11 22:35:53,146 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-11 22:35:53,146 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-11 22:35:53,146 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-11 22:35:53,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:35:53" (1/1) ... [2022-07-11 22:35:53,164 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:35:53" (1/1) ... [2022-07-11 22:35:53,182 INFO L137 Inliner]: procedures = 16, calls = 23, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 70 [2022-07-11 22:35:53,183 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-11 22:35:53,184 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-11 22:35:53,184 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-11 22:35:53,184 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-11 22:35:53,189 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:35:53" (1/1) ... [2022-07-11 22:35:53,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:35:53" (1/1) ... [2022-07-11 22:35:53,195 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:35:53" (1/1) ... [2022-07-11 22:35:53,195 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:35:53" (1/1) ... [2022-07-11 22:35:53,213 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:35:53" (1/1) ... [2022-07-11 22:35:53,216 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:35:53" (1/1) ... [2022-07-11 22:35:53,217 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:35:53" (1/1) ... [2022-07-11 22:35:53,218 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-11 22:35:53,219 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-11 22:35:53,219 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-11 22:35:53,219 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-11 22:35:53,220 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:35:53" (1/1) ... [2022-07-11 22:35:53,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-11 22:35:53,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:35:53,242 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) [2022-07-11 22:35:53,248 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 [2022-07-11 22:35:53,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-11 22:35:53,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-11 22:35:53,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-11 22:35:53,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-11 22:35:53,275 INFO L130 BoogieDeclarations]: Found specification of procedure bAnd [2022-07-11 22:35:53,276 INFO L138 BoogieDeclarations]: Found implementation of procedure bAnd [2022-07-11 22:35:53,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-11 22:35:53,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-11 22:35:53,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-11 22:35:53,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-11 22:35:53,348 INFO L234 CfgBuilder]: Building ICFG [2022-07-11 22:35:53,349 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-11 22:35:53,534 INFO L275 CfgBuilder]: Performing block encoding [2022-07-11 22:35:53,538 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-11 22:35:53,539 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-11 22:35:53,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 10:35:53 BoogieIcfgContainer [2022-07-11 22:35:53,540 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-11 22:35:53,541 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-11 22:35:53,541 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-11 22:35:53,544 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-11 22:35:53,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.07 10:35:52" (1/3) ... [2022-07-11 22:35:53,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4953a62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 10:35:53, skipping insertion in model container [2022-07-11 22:35:53,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:35:53" (2/3) ... [2022-07-11 22:35:53,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4953a62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 10:35:53, skipping insertion in model container [2022-07-11 22:35:53,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 10:35:53" (3/3) ... [2022-07-11 22:35:53,546 INFO L111 eAbstractionObserver]: Analyzing ICFG bAnd5.i [2022-07-11 22:35:53,563 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-11 22:35:53,564 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-11 22:35:53,610 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-11 22:35:53,619 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@6e791c46, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@e722d5a [2022-07-11 22:35:53,620 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-11 22:35:53,624 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 28 states have internal predecessors, (40), 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) [2022-07-11 22:35:53,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-11 22:35:53,631 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:35:53,631 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 22:35:53,632 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:35:53,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:35:53,638 INFO L85 PathProgramCache]: Analyzing trace with hash -469479236, now seen corresponding path program 1 times [2022-07-11 22:35:53,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:35:53,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968958500] [2022-07-11 22:35:53,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:35:53,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:35:53,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:35:53,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-11 22:35:53,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:35:53,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-11 22:35:53,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:35:53,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-11 22:35:53,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:35:53,854 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-11 22:35:53,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:35:53,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968958500] [2022-07-11 22:35:53,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968958500] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 22:35:53,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 22:35:53,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 22:35:53,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695891465] [2022-07-11 22:35:53,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 22:35:53,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 22:35:53,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:35:53,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 22:35:53,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 22:35:53,890 INFO L87 Difference]: Start difference. First operand has 33 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 28 states have internal predecessors, (40), 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 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-11 22:35:53,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:35:53,967 INFO L93 Difference]: Finished difference Result 63 states and 91 transitions. [2022-07-11 22:35:53,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 22:35:53,969 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2022-07-11 22:35:53,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:35:53,974 INFO L225 Difference]: With dead ends: 63 [2022-07-11 22:35:53,974 INFO L226 Difference]: Without dead ends: 30 [2022-07-11 22:35:53,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 22:35:53,988 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 15 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 22:35:53,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 87 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 22:35:54,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-07-11 22:35:54,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2022-07-11 22:35:54,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 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) [2022-07-11 22:35:54,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2022-07-11 22:35:54,019 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 29 [2022-07-11 22:35:54,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:35:54,019 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2022-07-11 22:35:54,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-11 22:35:54,020 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2022-07-11 22:35:54,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-11 22:35:54,022 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:35:54,023 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 22:35:54,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-11 22:35:54,024 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:35:54,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:35:54,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1932942338, now seen corresponding path program 1 times [2022-07-11 22:35:54,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:35:54,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510575068] [2022-07-11 22:35:54,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:35:54,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:35:54,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:35:54,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-11 22:35:54,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:35:54,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-11 22:35:54,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:35:54,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-11 22:35:54,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:35:54,175 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-11 22:35:54,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:35:54,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510575068] [2022-07-11 22:35:54,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510575068] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 22:35:54,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615386405] [2022-07-11 22:35:54,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:35:54,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:35:54,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:35:54,184 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) [2022-07-11 22:35:54,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-11 22:35:54,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:35:54,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-11 22:35:54,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 22:35:54,336 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-11 22:35:54,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 22:35:54,369 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-11 22:35:54,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615386405] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 22:35:54,372 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-11 22:35:54,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 10 [2022-07-11 22:35:54,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254943343] [2022-07-11 22:35:54,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-11 22:35:54,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-11 22:35:54,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:35:54,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-11 22:35:54,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-07-11 22:35:54,377 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 10 states, 10 states have (on average 3.4) internal successors, (34), 9 states have internal predecessors, (34), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-11 22:35:54,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:35:54,477 INFO L93 Difference]: Finished difference Result 62 states and 83 transitions. [2022-07-11 22:35:54,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-11 22:35:54,478 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 9 states have internal predecessors, (34), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 31 [2022-07-11 22:35:54,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:35:54,480 INFO L225 Difference]: With dead ends: 62 [2022-07-11 22:35:54,480 INFO L226 Difference]: Without dead ends: 39 [2022-07-11 22:35:54,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-07-11 22:35:54,482 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 69 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-11 22:35:54,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 128 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-11 22:35:54,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-07-11 22:35:54,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2022-07-11 22:35:54,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 states have internal predecessors, (33), 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) [2022-07-11 22:35:54,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2022-07-11 22:35:54,497 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 31 [2022-07-11 22:35:54,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:35:54,497 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2022-07-11 22:35:54,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 9 states have internal predecessors, (34), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-11 22:35:54,497 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2022-07-11 22:35:54,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-11 22:35:54,499 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:35:54,499 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 22:35:54,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-11 22:35:54,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:35:54,716 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:35:54,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:35:54,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1452282271, now seen corresponding path program 1 times [2022-07-11 22:35:54,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:35:54,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375648846] [2022-07-11 22:35:54,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:35:54,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:35:54,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:35:54,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-11 22:35:54,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:35:54,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-11 22:35:54,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:35:54,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-11 22:35:54,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:35:54,833 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-11 22:35:54,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:35:54,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375648846] [2022-07-11 22:35:54,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375648846] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 22:35:54,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461803808] [2022-07-11 22:35:54,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:35:54,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:35:54,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:35:54,835 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) [2022-07-11 22:35:54,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-11 22:35:54,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:35:54,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-11 22:35:54,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 22:35:54,931 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-11 22:35:54,932 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-11 22:35:54,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461803808] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 22:35:54,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-11 22:35:54,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2022-07-11 22:35:54,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175814734] [2022-07-11 22:35:54,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 22:35:54,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 22:35:54,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:35:54,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 22:35:54,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-11 22:35:54,934 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-11 22:35:54,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:35:54,955 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2022-07-11 22:35:54,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 22:35:54,955 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 45 [2022-07-11 22:35:54,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:35:54,956 INFO L225 Difference]: With dead ends: 52 [2022-07-11 22:35:54,956 INFO L226 Difference]: Without dead ends: 34 [2022-07-11 22:35:54,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-11 22:35:54,957 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 17 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 22:35:54,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 44 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 22:35:54,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-07-11 22:35:54,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2022-07-11 22:35:54,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 28 states have internal predecessors, (34), 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) [2022-07-11 22:35:54,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2022-07-11 22:35:54,961 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 45 [2022-07-11 22:35:54,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:35:54,962 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2022-07-11 22:35:54,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-11 22:35:54,962 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2022-07-11 22:35:54,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-11 22:35:54,963 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:35:54,963 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 22:35:54,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-11 22:35:55,180 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,SelfDestructingSolverStorable2 [2022-07-11 22:35:55,181 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:35:55,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:35:55,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1430162787, now seen corresponding path program 1 times [2022-07-11 22:35:55,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:35:55,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241082733] [2022-07-11 22:35:55,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:35:55,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:35:55,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:35:55,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-11 22:35:55,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:35:55,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-11 22:35:55,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:35:55,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-11 22:35:55,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:35:55,385 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-11 22:35:55,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:35:55,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241082733] [2022-07-11 22:35:55,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241082733] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 22:35:55,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450740343] [2022-07-11 22:35:55,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:35:55,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:35:55,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:35:55,387 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) [2022-07-11 22:35:55,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-11 22:35:55,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:35:55,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-11 22:35:55,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 22:35:55,577 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-11 22:35:55,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 22:35:55,717 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-11 22:35:55,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450740343] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 22:35:55,718 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-11 22:35:55,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 14 [2022-07-11 22:35:55,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534735638] [2022-07-11 22:35:55,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-11 22:35:55,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-11 22:35:55,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:35:55,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-11 22:35:55,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-07-11 22:35:55,722 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 9 states have internal predecessors, (31), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-11 22:35:55,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:35:55,804 INFO L93 Difference]: Finished difference Result 88 states and 116 transitions. [2022-07-11 22:35:55,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-11 22:35:55,804 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 9 states have internal predecessors, (31), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 47 [2022-07-11 22:35:55,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:35:55,808 INFO L225 Difference]: With dead ends: 88 [2022-07-11 22:35:55,809 INFO L226 Difference]: Without dead ends: 62 [2022-07-11 22:35:55,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 91 SyntacticMatches, 10 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-07-11 22:35:55,814 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 43 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-11 22:35:55,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 306 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-11 22:35:55,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-07-11 22:35:55,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 48. [2022-07-11 22:35:55,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 40 states have (on average 1.2) internal successors, (48), 41 states have internal predecessors, (48), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2022-07-11 22:35:55,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 62 transitions. [2022-07-11 22:35:55,822 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 62 transitions. Word has length 47 [2022-07-11 22:35:55,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:35:55,823 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 62 transitions. [2022-07-11 22:35:55,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 9 states have internal predecessors, (31), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-11 22:35:55,823 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 62 transitions. [2022-07-11 22:35:55,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-07-11 22:35:55,824 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:35:55,824 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 22:35:55,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-11 22:35:56,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:35:56,032 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:35:56,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:35:56,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1484367723, now seen corresponding path program 1 times [2022-07-11 22:35:56,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:35:56,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226105065] [2022-07-11 22:35:56,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:35:56,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:35:56,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:35:56,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-11 22:35:56,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:35:56,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-11 22:35:56,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:35:56,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-11 22:35:56,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:35:56,574 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 20 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-11 22:35:56,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:35:56,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226105065] [2022-07-11 22:35:56,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226105065] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 22:35:56,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963560361] [2022-07-11 22:35:56,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:35:56,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:35:56,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:35:56,577 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) [2022-07-11 22:35:56,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-11 22:35:56,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:35:56,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 68 conjunts are in the unsatisfiable core [2022-07-11 22:35:56,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 22:35:56,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:35:56,797 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 17 [2022-07-11 22:35:56,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:35:56,989 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-11 22:35:56,990 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 27 [2022-07-11 22:35:57,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:35:57,057 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-11 22:35:57,057 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 27 [2022-07-11 22:35:57,366 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 10 proven. 29 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-11 22:35:57,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 22:35:57,986 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 61 [2022-07-11 22:35:57,991 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2022-07-11 22:35:58,159 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 22 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-11 22:35:58,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963560361] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 22:35:58,159 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-11 22:35:58,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 52 [2022-07-11 22:35:58,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089575399] [2022-07-11 22:35:58,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-11 22:35:58,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-07-11 22:35:58,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:35:58,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-07-11 22:35:58,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=2370, Unknown=0, NotChecked=0, Total=2652 [2022-07-11 22:35:58,161 INFO L87 Difference]: Start difference. First operand 48 states and 62 transitions. Second operand has 52 states, 47 states have (on average 2.297872340425532) internal successors, (108), 46 states have internal predecessors, (108), 6 states have call successors, (9), 4 states have call predecessors, (9), 8 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2022-07-11 22:36:01,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:36:01,425 INFO L93 Difference]: Finished difference Result 271 states and 386 transitions. [2022-07-11 22:36:01,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-07-11 22:36:01,426 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 47 states have (on average 2.297872340425532) internal successors, (108), 46 states have internal predecessors, (108), 6 states have call successors, (9), 4 states have call predecessors, (9), 8 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) Word has length 48 [2022-07-11 22:36:01,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:36:01,429 INFO L225 Difference]: With dead ends: 271 [2022-07-11 22:36:01,429 INFO L226 Difference]: Without dead ends: 219 [2022-07-11 22:36:01,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3246 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1410, Invalid=10362, Unknown=0, NotChecked=0, Total=11772 [2022-07-11 22:36:01,433 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 514 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 1461 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 2054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 1461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 192 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-11 22:36:01,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [516 Valid, 379 Invalid, 2054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 1461 Invalid, 0 Unknown, 192 Unchecked, 1.0s Time] [2022-07-11 22:36:01,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2022-07-11 22:36:01,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 157. [2022-07-11 22:36:01,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 132 states have (on average 1.25) internal successors, (165), 139 states have internal predecessors, (165), 15 states have call successors, (15), 4 states have call predecessors, (15), 9 states have return successors, (48), 13 states have call predecessors, (48), 15 states have call successors, (48) [2022-07-11 22:36:01,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 228 transitions. [2022-07-11 22:36:01,459 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 228 transitions. Word has length 48 [2022-07-11 22:36:01,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:36:01,459 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 228 transitions. [2022-07-11 22:36:01,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 47 states have (on average 2.297872340425532) internal successors, (108), 46 states have internal predecessors, (108), 6 states have call successors, (9), 4 states have call predecessors, (9), 8 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2022-07-11 22:36:01,460 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 228 transitions. [2022-07-11 22:36:01,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-07-11 22:36:01,463 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:36:01,463 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 22:36:01,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-11 22:36:01,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:36:01,680 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:36:01,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:36:01,680 INFO L85 PathProgramCache]: Analyzing trace with hash 779674309, now seen corresponding path program 2 times [2022-07-11 22:36:01,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:36:01,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193838753] [2022-07-11 22:36:01,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:36:01,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:36:01,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:36:01,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-11 22:36:01,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:36:01,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-11 22:36:01,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:36:01,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-11 22:36:01,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:36:01,920 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-11 22:36:01,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:36:01,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193838753] [2022-07-11 22:36:01,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193838753] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 22:36:01,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413495046] [2022-07-11 22:36:01,921 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-11 22:36:01,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:36:01,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:36:01,923 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) [2022-07-11 22:36:01,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-11 22:36:01,980 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-11 22:36:01,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 22:36:01,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 62 conjunts are in the unsatisfiable core [2022-07-11 22:36:01,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 22:36:02,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:36:02,209 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-11 22:36:02,209 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 23 [2022-07-11 22:36:02,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:36:02,351 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-11 22:36:02,351 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 26 [2022-07-11 22:36:02,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:36:02,404 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 22:36:02,405 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-11 22:36:02,405 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 35 [2022-07-11 22:36:02,585 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 39 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-11 22:36:02,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 22:36:02,896 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 92 [2022-07-11 22:36:02,899 INFO L356 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-07-11 22:36:02,899 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 1 [2022-07-11 22:36:03,075 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 92 [2022-07-11 22:36:03,078 INFO L356 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-07-11 22:36:03,078 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 1 [2022-07-11 22:36:03,079 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 21 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-11 22:36:03,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413495046] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 22:36:03,080 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-11 22:36:03,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 20, 14] total 43 [2022-07-11 22:36:03,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137730010] [2022-07-11 22:36:03,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-11 22:36:03,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-07-11 22:36:03,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:36:03,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-07-11 22:36:03,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1614, Unknown=0, NotChecked=0, Total=1806 [2022-07-11 22:36:03,082 INFO L87 Difference]: Start difference. First operand 157 states and 228 transitions. Second operand has 43 states, 40 states have (on average 2.625) internal successors, (105), 39 states have internal predecessors, (105), 9 states have call successors, (9), 5 states have call predecessors, (9), 8 states have return successors, (9), 5 states have call predecessors, (9), 9 states have call successors, (9) [2022-07-11 22:36:05,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:36:05,190 INFO L93 Difference]: Finished difference Result 320 states and 441 transitions. [2022-07-11 22:36:05,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-07-11 22:36:05,191 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 40 states have (on average 2.625) internal successors, (105), 39 states have internal predecessors, (105), 9 states have call successors, (9), 5 states have call predecessors, (9), 8 states have return successors, (9), 5 states have call predecessors, (9), 9 states have call successors, (9) Word has length 48 [2022-07-11 22:36:05,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:36:05,193 INFO L225 Difference]: With dead ends: 320 [2022-07-11 22:36:05,193 INFO L226 Difference]: Without dead ends: 236 [2022-07-11 22:36:05,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 82 SyntacticMatches, 5 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2187 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=866, Invalid=5940, Unknown=0, NotChecked=0, Total=6806 [2022-07-11 22:36:05,196 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 353 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 1769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 378 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-11 22:36:05,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 357 Invalid, 1769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 1116 Invalid, 0 Unknown, 378 Unchecked, 0.7s Time] [2022-07-11 22:36:05,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-07-11 22:36:05,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 146. [2022-07-11 22:36:05,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 122 states have (on average 1.2459016393442623) internal successors, (152), 130 states have internal predecessors, (152), 15 states have call successors, (15), 3 states have call predecessors, (15), 8 states have return successors, (45), 12 states have call predecessors, (45), 15 states have call successors, (45) [2022-07-11 22:36:05,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 212 transitions. [2022-07-11 22:36:05,222 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 212 transitions. Word has length 48 [2022-07-11 22:36:05,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:36:05,223 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 212 transitions. [2022-07-11 22:36:05,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 40 states have (on average 2.625) internal successors, (105), 39 states have internal predecessors, (105), 9 states have call successors, (9), 5 states have call predecessors, (9), 8 states have return successors, (9), 5 states have call predecessors, (9), 9 states have call successors, (9) [2022-07-11 22:36:05,223 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 212 transitions. [2022-07-11 22:36:05,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-11 22:36:05,225 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:36:05,225 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 22:36:05,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-11 22:36:05,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:36:05,435 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:36:05,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:36:05,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1369061923, now seen corresponding path program 1 times [2022-07-11 22:36:05,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:36:05,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588703754] [2022-07-11 22:36:05,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:36:05,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:36:05,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:36:05,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-11 22:36:05,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:36:05,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-11 22:36:05,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:36:05,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-11 22:36:05,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:36:05,687 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-11 22:36:05,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:36:05,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588703754] [2022-07-11 22:36:05,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588703754] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 22:36:05,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659924273] [2022-07-11 22:36:05,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:36:05,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:36:05,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:36:05,690 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) [2022-07-11 22:36:05,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-11 22:36:05,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:36:05,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 31 conjunts are in the unsatisfiable core [2022-07-11 22:36:05,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 22:36:05,892 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-11 22:36:05,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 22:36:06,114 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-11 22:36:06,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659924273] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 22:36:06,114 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-11 22:36:06,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 18 [2022-07-11 22:36:06,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774657274] [2022-07-11 22:36:06,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-11 22:36:06,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-11 22:36:06,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:36:06,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-11 22:36:06,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-07-11 22:36:06,115 INFO L87 Difference]: Start difference. First operand 146 states and 212 transitions. Second operand has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 13 states have internal predecessors, (38), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-11 22:36:06,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:36:06,323 INFO L93 Difference]: Finished difference Result 246 states and 396 transitions. [2022-07-11 22:36:06,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-11 22:36:06,323 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 13 states have internal predecessors, (38), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 50 [2022-07-11 22:36:06,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:36:06,325 INFO L225 Difference]: With dead ends: 246 [2022-07-11 22:36:06,326 INFO L226 Difference]: Without dead ends: 242 [2022-07-11 22:36:06,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 89 SyntacticMatches, 19 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2022-07-11 22:36:06,327 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 72 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-11 22:36:06,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 514 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-11 22:36:06,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-07-11 22:36:06,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 197. [2022-07-11 22:36:06,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 164 states have (on average 1.2804878048780488) internal successors, (210), 177 states have internal predecessors, (210), 21 states have call successors, (21), 3 states have call predecessors, (21), 11 states have return successors, (88), 16 states have call predecessors, (88), 21 states have call successors, (88) [2022-07-11 22:36:06,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 319 transitions. [2022-07-11 22:36:06,397 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 319 transitions. Word has length 50 [2022-07-11 22:36:06,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:36:06,398 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 319 transitions. [2022-07-11 22:36:06,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 13 states have internal predecessors, (38), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-11 22:36:06,398 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 319 transitions. [2022-07-11 22:36:06,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-11 22:36:06,401 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:36:06,402 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 22:36:06,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-11 22:36:06,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:36:06,616 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:36:06,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:36:06,616 INFO L85 PathProgramCache]: Analyzing trace with hash 605481843, now seen corresponding path program 3 times [2022-07-11 22:36:06,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:36:06,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680469265] [2022-07-11 22:36:06,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:36:06,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:36:06,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:36:06,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-11 22:36:06,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:36:06,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-11 22:36:06,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:36:06,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-11 22:36:06,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:36:06,688 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 1 proven. 29 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-11 22:36:06,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:36:06,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680469265] [2022-07-11 22:36:06,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680469265] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 22:36:06,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968918012] [2022-07-11 22:36:06,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-11 22:36:06,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:36:06,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:36:06,690 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) [2022-07-11 22:36:06,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-11 22:36:06,749 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-07-11 22:36:06,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 22:36:06,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-11 22:36:06,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 22:36:06,824 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 24 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-11 22:36:06,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 22:36:06,900 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 24 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-11 22:36:06,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968918012] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 22:36:06,901 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-11 22:36:06,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 9] total 15 [2022-07-11 22:36:06,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855917329] [2022-07-11 22:36:06,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-11 22:36:06,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-11 22:36:06,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:36:06,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-11 22:36:06,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-07-11 22:36:06,902 INFO L87 Difference]: Start difference. First operand 197 states and 319 transitions. Second operand has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 14 states have internal predecessors, (71), 2 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-11 22:36:07,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:36:07,102 INFO L93 Difference]: Finished difference Result 434 states and 707 transitions. [2022-07-11 22:36:07,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-11 22:36:07,102 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 14 states have internal predecessors, (71), 2 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 50 [2022-07-11 22:36:07,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:36:07,105 INFO L225 Difference]: With dead ends: 434 [2022-07-11 22:36:07,105 INFO L226 Difference]: Without dead ends: 334 [2022-07-11 22:36:07,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 103 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=554, Unknown=0, NotChecked=0, Total=702 [2022-07-11 22:36:07,107 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 204 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-11 22:36:07,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 349 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-11 22:36:07,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-07-11 22:36:07,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 286. [2022-07-11 22:36:07,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 243 states have (on average 1.2592592592592593) internal successors, (306), 259 states have internal predecessors, (306), 27 states have call successors, (27), 5 states have call predecessors, (27), 15 states have return successors, (121), 21 states have call predecessors, (121), 27 states have call successors, (121) [2022-07-11 22:36:07,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 454 transitions. [2022-07-11 22:36:07,143 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 454 transitions. Word has length 50 [2022-07-11 22:36:07,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:36:07,144 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 454 transitions. [2022-07-11 22:36:07,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 14 states have internal predecessors, (71), 2 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-11 22:36:07,144 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 454 transitions. [2022-07-11 22:36:07,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-11 22:36:07,146 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:36:07,146 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 22:36:07,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-11 22:36:07,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:36:07,360 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:36:07,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:36:07,360 INFO L85 PathProgramCache]: Analyzing trace with hash -217318692, now seen corresponding path program 1 times [2022-07-11 22:36:07,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:36:07,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889339828] [2022-07-11 22:36:07,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:36:07,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:36:07,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:36:07,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-11 22:36:07,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:36:07,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-11 22:36:07,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:36:07,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-11 22:36:07,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:36:07,729 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 22 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-11 22:36:07,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:36:07,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889339828] [2022-07-11 22:36:07,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889339828] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 22:36:07,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480698573] [2022-07-11 22:36:07,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:36:07,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:36:07,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:36:07,732 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) [2022-07-11 22:36:07,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-11 22:36:07,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:36:07,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 64 conjunts are in the unsatisfiable core [2022-07-11 22:36:07,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 22:36:07,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:36:07,935 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2022-07-11 22:36:08,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:36:08,082 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-11 22:36:08,082 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 23 [2022-07-11 22:36:08,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:36:08,128 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-11 22:36:08,128 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 23 [2022-07-11 22:36:08,326 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 10 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 22:36:08,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 22:36:08,972 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 125 [2022-07-11 22:36:08,974 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 91 [2022-07-11 22:36:09,098 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 125 [2022-07-11 22:36:09,100 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 91 [2022-07-11 22:36:09,102 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 34 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-11 22:36:09,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480698573] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 22:36:09,102 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-11 22:36:09,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 22, 15] total 49 [2022-07-11 22:36:09,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094045186] [2022-07-11 22:36:09,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-11 22:36:09,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-07-11 22:36:09,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:36:09,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-07-11 22:36:09,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=2121, Unknown=0, NotChecked=0, Total=2352 [2022-07-11 22:36:09,104 INFO L87 Difference]: Start difference. First operand 286 states and 454 transitions. Second operand has 49 states, 45 states have (on average 2.7555555555555555) internal successors, (124), 42 states have internal predecessors, (124), 7 states have call successors, (9), 5 states have call predecessors, (9), 9 states have return successors, (9), 6 states have call predecessors, (9), 7 states have call successors, (9) [2022-07-11 22:36:12,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:36:12,461 INFO L93 Difference]: Finished difference Result 658 states and 1086 transitions. [2022-07-11 22:36:12,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-07-11 22:36:12,461 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 45 states have (on average 2.7555555555555555) internal successors, (124), 42 states have internal predecessors, (124), 7 states have call successors, (9), 5 states have call predecessors, (9), 9 states have return successors, (9), 6 states have call predecessors, (9), 7 states have call successors, (9) Word has length 52 [2022-07-11 22:36:12,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:36:12,467 INFO L225 Difference]: With dead ends: 658 [2022-07-11 22:36:12,467 INFO L226 Difference]: Without dead ends: 415 [2022-07-11 22:36:12,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 92 SyntacticMatches, 8 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3021 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=910, Invalid=8020, Unknown=0, NotChecked=0, Total=8930 [2022-07-11 22:36:12,471 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 394 mSDsluCounter, 1329 mSDsCounter, 0 mSdLazyCounter, 1885 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 1403 SdHoareTripleChecker+Invalid, 2602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 590 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-11 22:36:12,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 1403 Invalid, 2602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1885 Invalid, 0 Unknown, 590 Unchecked, 1.0s Time] [2022-07-11 22:36:12,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2022-07-11 22:36:12,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 347. [2022-07-11 22:36:12,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 297 states have (on average 1.2895622895622896) internal successors, (383), 319 states have internal predecessors, (383), 29 states have call successors, (29), 5 states have call predecessors, (29), 20 states have return successors, (210), 22 states have call predecessors, (210), 29 states have call successors, (210) [2022-07-11 22:36:12,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 622 transitions. [2022-07-11 22:36:12,512 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 622 transitions. Word has length 52 [2022-07-11 22:36:12,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:36:12,513 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 622 transitions. [2022-07-11 22:36:12,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 45 states have (on average 2.7555555555555555) internal successors, (124), 42 states have internal predecessors, (124), 7 states have call successors, (9), 5 states have call predecessors, (9), 9 states have return successors, (9), 6 states have call predecessors, (9), 7 states have call successors, (9) [2022-07-11 22:36:12,513 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 622 transitions. [2022-07-11 22:36:12,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-11 22:36:12,516 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:36:12,516 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 22:36:12,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-11 22:36:12,731 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,SelfDestructingSolverStorable8 [2022-07-11 22:36:12,731 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:36:12,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:36:12,732 INFO L85 PathProgramCache]: Analyzing trace with hash 568180046, now seen corresponding path program 1 times [2022-07-11 22:36:12,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:36:12,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148247240] [2022-07-11 22:36:12,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:36:12,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:36:12,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-11 22:36:12,761 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-11 22:36:12,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-11 22:36:12,796 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-11 22:36:12,796 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-11 22:36:12,797 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-11 22:36:12,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-11 22:36:12,800 INFO L356 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 22:36:12,802 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-11 22:36:12,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.07 10:36:12 BoogieIcfgContainer [2022-07-11 22:36:12,860 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-11 22:36:12,862 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-11 22:36:12,862 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-11 22:36:12,862 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-11 22:36:12,862 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 10:35:53" (3/4) ... [2022-07-11 22:36:12,864 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-11 22:36:12,902 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-11 22:36:12,902 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-11 22:36:12,903 INFO L158 Benchmark]: Toolchain (without parser) took 19972.90ms. Allocated memory was 104.9MB in the beginning and 234.9MB in the end (delta: 130.0MB). Free memory was 73.8MB in the beginning and 83.1MB in the end (delta: -9.3MB). Peak memory consumption was 121.2MB. Max. memory is 16.1GB. [2022-07-11 22:36:12,903 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 104.9MB. Free memory was 59.0MB in the beginning and 59.0MB in the end (delta: 46.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-11 22:36:12,903 INFO L158 Benchmark]: CACSL2BoogieTranslator took 214.68ms. Allocated memory is still 104.9MB. Free memory was 73.5MB in the beginning and 80.1MB in the end (delta: -6.6MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. [2022-07-11 22:36:12,903 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.56ms. Allocated memory is still 104.9MB. Free memory was 80.1MB in the beginning and 78.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-11 22:36:12,904 INFO L158 Benchmark]: Boogie Preprocessor took 34.62ms. Allocated memory is still 104.9MB. Free memory was 78.5MB in the beginning and 77.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-11 22:36:12,904 INFO L158 Benchmark]: RCFGBuilder took 321.48ms. Allocated memory is still 104.9MB. Free memory was 76.9MB in the beginning and 65.5MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-11 22:36:12,904 INFO L158 Benchmark]: TraceAbstraction took 19318.60ms. Allocated memory was 104.9MB in the beginning and 234.9MB in the end (delta: 130.0MB). Free memory was 64.8MB in the beginning and 86.3MB in the end (delta: -21.5MB). Peak memory consumption was 107.6MB. Max. memory is 16.1GB. [2022-07-11 22:36:12,904 INFO L158 Benchmark]: Witness Printer took 40.84ms. Allocated memory is still 234.9MB. Free memory was 86.3MB in the beginning and 83.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-11 22:36:12,905 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 104.9MB. Free memory was 59.0MB in the beginning and 59.0MB in the end (delta: 46.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 214.68ms. Allocated memory is still 104.9MB. Free memory was 73.5MB in the beginning and 80.1MB in the end (delta: -6.6MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.56ms. Allocated memory is still 104.9MB. Free memory was 80.1MB in the beginning and 78.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 34.62ms. Allocated memory is still 104.9MB. Free memory was 78.5MB in the beginning and 77.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 321.48ms. Allocated memory is still 104.9MB. Free memory was 76.9MB in the beginning and 65.5MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 19318.60ms. Allocated memory was 104.9MB in the beginning and 234.9MB in the end (delta: 130.0MB). Free memory was 64.8MB in the beginning and 86.3MB in the end (delta: -21.5MB). Peak memory consumption was 107.6MB. Max. memory is 16.1GB. * Witness Printer took 40.84ms. Allocated memory is still 234.9MB. Free memory was 86.3MB in the beginning and 83.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. 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 - CounterExampleResult [Line: 57]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L17] int N; VAL [N=0] [L32] N = __VERIFIER_nondet_int() [L33] COND TRUE N > 1 [L34] int x[N]; [L35] int temp; [L36] int ret; [L37] int ret2; [L38] int ret5; [L40] int i = 0; VAL [i=0, N=2, x={3:0}] [L40] COND TRUE i < N [L42] x[i] = __VERIFIER_nondet_int() [L40] i++ VAL [i=1, N=2, x={3:0}] [L40] COND TRUE i < N [L42] x[i] = __VERIFIER_nondet_int() [L40] i++ VAL [i=2, N=2, x={3:0}] [L40] COND FALSE !(i < N) VAL [i=2, N=2, x={3:0}] [L45] CALL, EXPR bAnd(x) VAL [\old(res = res & x[i])=6442450946, N=2, res = res & x[i]=6442450946, x={3:0}] [L21] int i; [L22] long long res; [L23] EXPR x[0] [L23] res = x[0] [L24] i = 1 VAL [\old(res = res & x[i])=6442450946, i=1, N=2, res=-8, res = res & x[i]=6442450946, x={3:0}, x={3:0}] [L24] COND TRUE i < N [L25] EXPR x[i] [L25] EXPR x[i] VAL [\old(res = res & x[i])=6442450946, i=1, N=2, res=-8, res = res & x[i]=6442450946, x={3:0}, x={3:0}, x[i]=-1x[i]=-1] [L25] res = res & x[i] VAL [\old(res = res & x[i])=6442450946, i=1, N=2, res=6442450945, res = res & x[i]=6442450946, x={3:0}, x={3:0}, x[i]=-1x[i]=-1] [L24] i++ VAL [\old(res = res & x[i])=6442450946, i=2, N=2, res=6442450945, res = res & x[i]=6442450946, x={3:0}, x={3:0}] [L24] COND FALSE !(i < N) VAL [\old(res = res & x[i])=6442450946, i=2, N=2, res=6442450945, res = res & x[i]=6442450946, x={3:0}, x={3:0}] [L27] return res; VAL [\old(res = res & x[i])=6442450946, \result=-2147483647, i=2, N=2, res=6442450945, res = res & x[i]=6442450946, x={3:0}, x={3:0}] [L45] RET, EXPR bAnd(x) VAL [bAnd(x)=-2147483647, i=2, N=2, res = res & x[i]=6442450946, x={3:0}] [L45] ret = bAnd(x) [L47] EXPR x[0] [L47] temp=x[0] [L47] EXPR x[1] [L47] x[0] = x[1] [L47] x[1] = temp VAL [i=2, N=2, res = res & x[i]=6442450946, ret=-2147483647, temp=-8, x={3:0}] [L48] CALL, EXPR bAnd(x) VAL [\old(res = res & x[i])=6442450946, N=2, res = res & x[i]=6442450946, x={3:0}] [L21] int i; [L22] long long res; [L23] EXPR x[0] [L23] res = x[0] [L24] i = 1 VAL [\old(res = res & x[i])=6442450946, i=1, N=2, res=-1, res = res & x[i]=6442450946, x={3:0}, x={3:0}] [L24] COND TRUE i < N [L25] EXPR x[i] [L25] EXPR x[i] VAL [\old(res = res & x[i])=6442450946, i=1, N=2, res=-1, res = res & x[i]=6442450946, x={3:0}, x={3:0}, x[i]=-8x[i]=-8] [L25] res = res & x[i] VAL [\old(res = res & x[i])=6442450946, i=1, N=2, res=0, res = res & x[i]=6442450946, x={3:0}, x={3:0}, x[i]=-8x[i]=-8] [L24] i++ VAL [\old(res = res & x[i])=6442450946, i=2, N=2, res=0, res = res & x[i]=6442450946, x={3:0}, x={3:0}] [L24] COND FALSE !(i < N) VAL [\old(res = res & x[i])=6442450946, i=2, N=2, res=0, res = res & x[i]=6442450946, x={3:0}, x={3:0}] [L27] return res; VAL [\old(res = res & x[i])=6442450946, \result=0, i=2, N=2, res=0, res = res & x[i]=6442450946, x={3:0}, x={3:0}] [L48] RET, EXPR bAnd(x) VAL [bAnd(x)=0, i=2, N=2, res = res & x[i]=6442450946, ret=-2147483647, temp=-8, x={3:0}] [L48] ret2 = bAnd(x) [L49] EXPR x[0] [L49] temp=x[0] [L50] int i =0 ; VAL [i=0, i=2, N=2, res = res & x[i]=6442450946, ret=-2147483647, ret2=0, temp=-1, x={3:0}] [L50] COND TRUE i