./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/reducercommutativity/max10-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/reducercommutativity/max10-1.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 1223a7fef027dae15fda123c8ce40ec49dc779b7d5d627ded9a670697417439e --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 09:59:59,231 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 09:59:59,241 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 09:59:59,274 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 09:59:59,279 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 09:59:59,280 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 09:59:59,283 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 09:59:59,287 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 09:59:59,288 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 09:59:59,291 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 09:59:59,291 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 09:59:59,293 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 09:59:59,293 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 09:59:59,294 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 09:59:59,296 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 09:59:59,297 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 09:59:59,298 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 09:59:59,299 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 09:59:59,301 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 09:59:59,304 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 09:59:59,306 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 09:59:59,306 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 09:59:59,307 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 09:59:59,307 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 09:59:59,308 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 09:59:59,313 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 09:59:59,313 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 09:59:59,314 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 09:59:59,314 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 09:59:59,315 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 09:59:59,315 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 09:59:59,315 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 09:59:59,317 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 09:59:59,317 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 09:59:59,317 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 09:59:59,318 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 09:59:59,318 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 09:59:59,318 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 09:59:59,319 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 09:59:59,319 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 09:59:59,319 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 09:59:59,320 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 09:59:59,322 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 09:59:59,350 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 09:59:59,351 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 09:59:59,351 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 09:59:59,351 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 09:59:59,351 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 09:59:59,352 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 09:59:59,352 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 09:59:59,352 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 09:59:59,352 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 09:59:59,353 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 09:59:59,353 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 09:59:59,353 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 09:59:59,353 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 09:59:59,354 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 09:59:59,354 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 09:59:59,354 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 09:59:59,354 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 09:59:59,354 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 09:59:59,354 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 09:59:59,355 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 09:59:59,355 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 09:59:59,355 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 09:59:59,355 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 09:59:59,356 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 09:59:59,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 09:59:59,356 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 09:59:59,356 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 09:59:59,356 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 09:59:59,356 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 09:59:59,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 09:59:59,357 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 09:59:59,357 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 09:59:59,357 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 09:59:59,357 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1223a7fef027dae15fda123c8ce40ec49dc779b7d5d627ded9a670697417439e [2022-07-13 09:59:59,510 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 09:59:59,529 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 09:59:59,532 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 09:59:59,533 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 09:59:59,534 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 09:59:59,534 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/reducercommutativity/max10-1.i [2022-07-13 09:59:59,580 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faaf60f3b/29af4ac3f7b4448bb72db4dfe0015e27/FLAG3f5ac734f [2022-07-13 09:59:59,867 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 09:59:59,868 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/max10-1.i [2022-07-13 09:59:59,872 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faaf60f3b/29af4ac3f7b4448bb72db4dfe0015e27/FLAG3f5ac734f [2022-07-13 10:00:00,304 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faaf60f3b/29af4ac3f7b4448bb72db4dfe0015e27 [2022-07-13 10:00:00,306 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 10:00:00,307 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 10:00:00,308 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 10:00:00,308 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 10:00:00,310 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 10:00:00,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:00:00" (1/1) ... [2022-07-13 10:00:00,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@799d5c54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:00:00, skipping insertion in model container [2022-07-13 10:00:00,311 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:00:00" (1/1) ... [2022-07-13 10:00:00,316 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 10:00:00,326 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 10:00:00,453 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/reducercommutativity/max10-1.i[1290,1303] [2022-07-13 10:00:00,455 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 10:00:00,459 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 10:00:00,483 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/reducercommutativity/max10-1.i[1290,1303] [2022-07-13 10:00:00,491 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 10:00:00,499 INFO L208 MainTranslator]: Completed translation [2022-07-13 10:00:00,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:00:00 WrapperNode [2022-07-13 10:00:00,500 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 10:00:00,501 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 10:00:00,501 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 10:00:00,501 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 10:00:00,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:00:00" (1/1) ... [2022-07-13 10:00:00,510 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:00:00" (1/1) ... [2022-07-13 10:00:00,521 INFO L137 Inliner]: procedures = 16, calls = 23, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 67 [2022-07-13 10:00:00,521 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 10:00:00,522 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 10:00:00,522 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 10:00:00,522 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 10:00:00,527 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:00:00" (1/1) ... [2022-07-13 10:00:00,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:00:00" (1/1) ... [2022-07-13 10:00:00,531 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:00:00" (1/1) ... [2022-07-13 10:00:00,531 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:00:00" (1/1) ... [2022-07-13 10:00:00,535 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:00:00" (1/1) ... [2022-07-13 10:00:00,543 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:00:00" (1/1) ... [2022-07-13 10:00:00,544 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:00:00" (1/1) ... [2022-07-13 10:00:00,545 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 10:00:00,546 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 10:00:00,546 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 10:00:00,546 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 10:00:00,546 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:00:00" (1/1) ... [2022-07-13 10:00:00,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 10:00:00,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:00:00,580 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 10:00:00,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 10:00:00,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 10:00:00,613 INFO L130 BoogieDeclarations]: Found specification of procedure max [2022-07-13 10:00:00,614 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2022-07-13 10:00:00,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 10:00:00,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 10:00:00,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 10:00:00,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 10:00:00,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 10:00:00,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 10:00:00,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 10:00:00,694 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 10:00:00,696 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 10:00:00,865 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 10:00:00,870 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 10:00:00,870 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-13 10:00:00,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:00:00 BoogieIcfgContainer [2022-07-13 10:00:00,872 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 10:00:00,873 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 10:00:00,873 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 10:00:00,876 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 10:00:00,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:00:00" (1/3) ... [2022-07-13 10:00:00,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cb59d0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:00:00, skipping insertion in model container [2022-07-13 10:00:00,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:00:00" (2/3) ... [2022-07-13 10:00:00,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cb59d0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:00:00, skipping insertion in model container [2022-07-13 10:00:00,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:00:00" (3/3) ... [2022-07-13 10:00:00,879 INFO L111 eAbstractionObserver]: Analyzing ICFG max10-1.i [2022-07-13 10:00:00,891 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 10:00:00,891 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 10:00:00,928 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 10:00:00,933 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@47427fa, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@442be7ae [2022-07-13 10:00:00,934 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 10:00:00,937 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 23 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 10:00:00,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-13 10:00:00,944 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:00:00,945 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] [2022-07-13 10:00:00,945 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:00:00,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:00:00,950 INFO L85 PathProgramCache]: Analyzing trace with hash -528134526, now seen corresponding path program 1 times [2022-07-13 10:00:00,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:00:00,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964482265] [2022-07-13 10:00:00,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:00:00,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:00:01,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:00:01,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 10:00:01,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:00:01,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 10:00:01,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:00:01,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 10:00:01,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:00:01,099 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-13 10:00:01,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:00:01,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964482265] [2022-07-13 10:00:01,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964482265] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 10:00:01,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 10:00:01,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 10:00:01,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125456963] [2022-07-13 10:00:01,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 10:00:01,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 10:00:01,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:00:01,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 10:00:01,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 10:00:01,140 INFO L87 Difference]: Start difference. First operand has 28 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 23 states have internal predecessors, (31), 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 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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) [2022-07-13 10:00:01,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:00:01,161 INFO L93 Difference]: Finished difference Result 52 states and 71 transitions. [2022-07-13 10:00:01,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 10:00:01,163 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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 28 [2022-07-13 10:00:01,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:00:01,169 INFO L225 Difference]: With dead ends: 52 [2022-07-13 10:00:01,169 INFO L226 Difference]: Without dead ends: 24 [2022-07-13 10:00:01,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 10:00:01,178 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 10:00:01,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 10:00:01,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-07-13 10:00:01,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-07-13 10:00:01,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 10:00:01,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2022-07-13 10:00:01,222 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 28 [2022-07-13 10:00:01,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:00:01,222 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2022-07-13 10:00:01,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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) [2022-07-13 10:00:01,223 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2022-07-13 10:00:01,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-13 10:00:01,226 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:00:01,227 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] [2022-07-13 10:00:01,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 10:00:01,228 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:00:01,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:00:01,231 INFO L85 PathProgramCache]: Analyzing trace with hash -321958693, now seen corresponding path program 1 times [2022-07-13 10:00:01,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:00:01,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121620336] [2022-07-13 10:00:01,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:00:01,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:00:01,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:00:01,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 10:00:01,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:00:01,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 10:00:01,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:00:01,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 10:00:01,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:00:01,376 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-13 10:00:01,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:00:01,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121620336] [2022-07-13 10:00:01,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121620336] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 10:00:01,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000102998] [2022-07-13 10:00:01,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:00:01,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:00:01,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:00:01,383 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 10:00:01,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 10:00:01,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:00:01,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 10:00:01,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:00:01,502 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-13 10:00:01,502 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 10:00:01,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000102998] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 10:00:01,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 10:00:01,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-07-13 10:00:01,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416748347] [2022-07-13 10:00:01,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 10:00:01,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 10:00:01,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:00:01,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 10:00:01,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 10:00:01,516 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2022-07-13 10:00:01,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:00:01,527 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2022-07-13 10:00:01,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 10:00:01,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 28 [2022-07-13 10:00:01,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:00:01,530 INFO L225 Difference]: With dead ends: 46 [2022-07-13 10:00:01,530 INFO L226 Difference]: Without dead ends: 26 [2022-07-13 10:00:01,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 10:00:01,532 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 1 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 10:00:01,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 52 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 10:00:01,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-07-13 10:00:01,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2022-07-13 10:00:01,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 10:00:01,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2022-07-13 10:00:01,538 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 28 [2022-07-13 10:00:01,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:00:01,538 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2022-07-13 10:00:01,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2022-07-13 10:00:01,539 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2022-07-13 10:00:01,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-13 10:00:01,540 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:00:01,540 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] [2022-07-13 10:00:01,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 10:00:01,747 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 [2022-07-13 10:00:01,748 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:00:01,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:00:01,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1777476163, now seen corresponding path program 1 times [2022-07-13 10:00:01,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:00:01,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33766120] [2022-07-13 10:00:01,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:00:01,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:00:01,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:00:01,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 10:00:01,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:00:01,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 10:00:01,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:00:01,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 10:00:01,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:00:01,839 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-13 10:00:01,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:00:01,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33766120] [2022-07-13 10:00:01,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33766120] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 10:00:01,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761477694] [2022-07-13 10:00:01,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:00:01,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:00:01,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:00:01,847 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 10:00:01,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 10:00:01,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:00:01,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 10:00:01,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:00:01,914 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 10:00:01,914 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 10:00:01,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761477694] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 10:00:01,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 10:00:01,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-07-13 10:00:01,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998943665] [2022-07-13 10:00:01,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 10:00:01,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 10:00:01,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:00:01,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 10:00:01,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 10:00:01,917 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-13 10:00:01,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:00:01,928 INFO L93 Difference]: Finished difference Result 48 states and 61 transitions. [2022-07-13 10:00:01,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 10:00:01,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2022-07-13 10:00:01,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:00:01,929 INFO L225 Difference]: With dead ends: 48 [2022-07-13 10:00:01,930 INFO L226 Difference]: Without dead ends: 29 [2022-07-13 10:00:01,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 10:00:01,931 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 4 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 10:00:01,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 50 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 10:00:01,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-07-13 10:00:01,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2022-07-13 10:00:01,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 10:00:01,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2022-07-13 10:00:01,936 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 30 [2022-07-13 10:00:01,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:00:01,937 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2022-07-13 10:00:01,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-13 10:00:01,937 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2022-07-13 10:00:01,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-13 10:00:01,938 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:00:01,938 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:00:01,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 10:00:02,163 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 [2022-07-13 10:00:02,164 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:00:02,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:00:02,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1540631384, now seen corresponding path program 1 times [2022-07-13 10:00:02,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:00:02,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311144810] [2022-07-13 10:00:02,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:00:02,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:00:02,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:00:02,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 10:00:02,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:00:02,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 10:00:02,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:00:02,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 10:00:02,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:00:02,230 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-13 10:00:02,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:00:02,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311144810] [2022-07-13 10:00:02,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311144810] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 10:00:02,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688201448] [2022-07-13 10:00:02,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:00:02,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:00:02,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:00:02,233 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 10:00:02,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 10:00:02,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:00:02,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 10:00:02,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:00:02,331 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-13 10:00:02,332 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 10:00:02,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688201448] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 10:00:02,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 10:00:02,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-13 10:00:02,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998556001] [2022-07-13 10:00:02,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 10:00:02,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 10:00:02,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:00:02,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 10:00:02,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 10:00:02,334 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2022-07-13 10:00:02,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:00:02,355 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2022-07-13 10:00:02,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 10:00:02,356 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 42 [2022-07-13 10:00:02,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:00:02,357 INFO L225 Difference]: With dead ends: 43 [2022-07-13 10:00:02,361 INFO L226 Difference]: Without dead ends: 28 [2022-07-13 10:00:02,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 10:00:02,363 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 1 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 10:00:02,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 51 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 10:00:02,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-07-13 10:00:02,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2022-07-13 10:00:02,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 10:00:02,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2022-07-13 10:00:02,372 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 42 [2022-07-13 10:00:02,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:00:02,376 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2022-07-13 10:00:02,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2022-07-13 10:00:02,376 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2022-07-13 10:00:02,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-13 10:00:02,377 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:00:02,377 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:00:02,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 10:00:02,578 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 [2022-07-13 10:00:02,578 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:00:02,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:00:02,579 INFO L85 PathProgramCache]: Analyzing trace with hash -180199466, now seen corresponding path program 1 times [2022-07-13 10:00:02,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:00:02,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650126681] [2022-07-13 10:00:02,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:00:02,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:00:02,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:00:02,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 10:00:02,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:00:02,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 10:00:02,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:00:02,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 10:00:02,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:00:02,671 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 10:00:02,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:00:02,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650126681] [2022-07-13 10:00:02,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650126681] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 10:00:02,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064073744] [2022-07-13 10:00:02,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:00:02,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:00:02,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:00:02,674 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 10:00:02,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 10:00:02,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:00:02,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 10:00:02,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:00:02,762 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-13 10:00:02,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:00:02,799 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-13 10:00:02,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064073744] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 10:00:02,800 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 10:00:02,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2022-07-13 10:00:02,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669813243] [2022-07-13 10:00:02,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 10:00:02,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 10:00:02,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:00:02,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 10:00:02,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-07-13 10:00:02,802 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-13 10:00:02,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:00:02,833 INFO L93 Difference]: Finished difference Result 62 states and 80 transitions. [2022-07-13 10:00:02,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 10:00:02,834 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 44 [2022-07-13 10:00:02,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:00:02,834 INFO L225 Difference]: With dead ends: 62 [2022-07-13 10:00:02,835 INFO L226 Difference]: Without dead ends: 40 [2022-07-13 10:00:02,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-07-13 10:00:02,836 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 15 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 10:00:02,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 70 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 10:00:02,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-07-13 10:00:02,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2022-07-13 10:00:02,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.15625) internal successors, (37), 32 states have internal predecessors, (37), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 10:00:02,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2022-07-13 10:00:02,841 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 44 [2022-07-13 10:00:02,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:00:02,842 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2022-07-13 10:00:02,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-13 10:00:02,842 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2022-07-13 10:00:02,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-13 10:00:02,843 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:00:02,843 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:00:02,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 10:00:03,066 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 [2022-07-13 10:00:03,066 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:00:03,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:00:03,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1875433, now seen corresponding path program 2 times [2022-07-13 10:00:03,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:00:03,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572899247] [2022-07-13 10:00:03,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:00:03,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:00:03,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:00:03,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 10:00:03,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:00:03,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 10:00:03,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:00:03,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 10:00:03,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:00:03,144 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-07-13 10:00:03,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:00:03,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572899247] [2022-07-13 10:00:03,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572899247] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 10:00:03,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663096758] [2022-07-13 10:00:03,145 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 10:00:03,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:00:03,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:00:03,147 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 10:00:03,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 10:00:03,227 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 10:00:03,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 10:00:03,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 10:00:03,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:00:03,296 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-07-13 10:00:03,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:00:03,374 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-07-13 10:00:03,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663096758] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 10:00:03,374 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 10:00:03,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2022-07-13 10:00:03,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179365333] [2022-07-13 10:00:03,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 10:00:03,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 10:00:03,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:00:03,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 10:00:03,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-07-13 10:00:03,380 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 10:00:03,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:00:03,441 INFO L93 Difference]: Finished difference Result 78 states and 96 transitions. [2022-07-13 10:00:03,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 10:00:03,443 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 62 [2022-07-13 10:00:03,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:00:03,444 INFO L225 Difference]: With dead ends: 78 [2022-07-13 10:00:03,444 INFO L226 Difference]: Without dead ends: 52 [2022-07-13 10:00:03,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-07-13 10:00:03,446 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 17 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 10:00:03,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 93 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 10:00:03,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-07-13 10:00:03,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2022-07-13 10:00:03,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.108695652173913) internal successors, (51), 46 states have internal predecessors, (51), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 10:00:03,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2022-07-13 10:00:03,452 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 62 [2022-07-13 10:00:03,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:00:03,452 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2022-07-13 10:00:03,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 10:00:03,452 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2022-07-13 10:00:03,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-13 10:00:03,454 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:00:03,454 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:00:03,476 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-13 10:00:03,671 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 [2022-07-13 10:00:03,672 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:00:03,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:00:03,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1341943393, now seen corresponding path program 3 times [2022-07-13 10:00:03,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:00:03,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542601138] [2022-07-13 10:00:03,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:00:03,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:00:03,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:00:03,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 10:00:03,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:00:03,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-13 10:00:03,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:00:03,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 10:00:03,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:00:03,770 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-07-13 10:00:03,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:00:03,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542601138] [2022-07-13 10:00:03,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542601138] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 10:00:03,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835414753] [2022-07-13 10:00:03,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 10:00:03,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:00:03,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:00:03,782 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 10:00:03,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 10:00:03,862 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-13 10:00:03,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 10:00:03,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 10:00:03,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:00:03,880 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-07-13 10:00:03,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:00:03,917 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-07-13 10:00:03,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835414753] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 10:00:03,918 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 10:00:03,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-07-13 10:00:03,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979034493] [2022-07-13 10:00:03,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 10:00:03,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 10:00:03,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:00:03,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 10:00:03,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-07-13 10:00:03,920 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-13 10:00:03,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:00:03,944 INFO L93 Difference]: Finished difference Result 94 states and 115 transitions. [2022-07-13 10:00:03,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 10:00:03,945 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 76 [2022-07-13 10:00:03,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:00:03,946 INFO L225 Difference]: With dead ends: 94 [2022-07-13 10:00:03,946 INFO L226 Difference]: Without dead ends: 67 [2022-07-13 10:00:03,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-07-13 10:00:03,947 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 40 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 10:00:03,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 58 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 10:00:03,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-07-13 10:00:03,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2022-07-13 10:00:03,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 62 states have (on average 1.1451612903225807) internal successors, (71), 62 states have internal predecessors, (71), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 10:00:03,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 77 transitions. [2022-07-13 10:00:03,953 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 77 transitions. Word has length 76 [2022-07-13 10:00:03,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:00:03,954 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 77 transitions. [2022-07-13 10:00:03,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-13 10:00:03,954 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 77 transitions. [2022-07-13 10:00:03,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-13 10:00:03,955 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:00:03,956 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:00:03,980 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-13 10:00:04,179 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 [2022-07-13 10:00:04,180 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:00:04,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:00:04,180 INFO L85 PathProgramCache]: Analyzing trace with hash -28042803, now seen corresponding path program 4 times [2022-07-13 10:00:04,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:00:04,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852467068] [2022-07-13 10:00:04,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:00:04,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:00:04,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:00:04,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 10:00:04,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:00:04,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 10:00:04,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:00:04,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 10:00:04,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:00:04,372 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 0 proven. 386 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2022-07-13 10:00:04,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:00:04,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852467068] [2022-07-13 10:00:04,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852467068] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 10:00:04,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688728200] [2022-07-13 10:00:04,373 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-13 10:00:04,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:00:04,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:00:04,374 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 10:00:04,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-13 10:00:04,467 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-13 10:00:04,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 10:00:04,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 10:00:04,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:00:04,504 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 316 proven. 66 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2022-07-13 10:00:04,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:00:04,571 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 0 proven. 386 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2022-07-13 10:00:04,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688728200] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 10:00:04,572 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 10:00:04,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2022-07-13 10:00:04,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236897293] [2022-07-13 10:00:04,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 10:00:04,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 10:00:04,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:00:04,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 10:00:04,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-07-13 10:00:04,574 INFO L87 Difference]: Start difference. First operand 67 states and 77 transitions. Second operand has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 10:00:04,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:00:04,606 INFO L93 Difference]: Finished difference Result 126 states and 155 transitions. [2022-07-13 10:00:04,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 10:00:04,607 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-07-13 10:00:04,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:00:04,608 INFO L225 Difference]: With dead ends: 126 [2022-07-13 10:00:04,608 INFO L226 Difference]: Without dead ends: 83 [2022-07-13 10:00:04,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 250 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-07-13 10:00:04,609 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 62 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 10:00:04,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 66 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 10:00:04,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-07-13 10:00:04,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2022-07-13 10:00:04,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 78 states have (on average 1.1666666666666667) internal successors, (91), 78 states have internal predecessors, (91), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 10:00:04,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 97 transitions. [2022-07-13 10:00:04,616 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 97 transitions. Word has length 124 [2022-07-13 10:00:04,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:00:04,616 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 97 transitions. [2022-07-13 10:00:04,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 10:00:04,617 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 97 transitions. [2022-07-13 10:00:04,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-07-13 10:00:04,618 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:00:04,619 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:00:04,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-13 10:00:04,831 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 [2022-07-13 10:00:04,832 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:00:04,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:00:04,832 INFO L85 PathProgramCache]: Analyzing trace with hash -281100999, now seen corresponding path program 5 times [2022-07-13 10:00:04,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:00:04,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800069384] [2022-07-13 10:00:04,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:00:04,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:00:04,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:00:04,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 10:00:04,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:00:04,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 10:00:04,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:00:04,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-13 10:00:04,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:00:05,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1949 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1945 trivial. 0 not checked. [2022-07-13 10:00:05,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:00:05,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800069384] [2022-07-13 10:00:05,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800069384] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 10:00:05,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691934658] [2022-07-13 10:00:05,001 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-13 10:00:05,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:00:05,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:00:05,002 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 10:00:05,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-13 10:00:05,289 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2022-07-13 10:00:05,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 10:00:05,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 10:00:05,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:00:05,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1949 backedges. 850 proven. 4 refuted. 0 times theorem prover too weak. 1095 trivial. 0 not checked. [2022-07-13 10:00:05,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:00:05,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1949 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1945 trivial. 0 not checked. [2022-07-13 10:00:05,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691934658] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 10:00:05,353 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 10:00:05,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-07-13 10:00:05,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875946242] [2022-07-13 10:00:05,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 10:00:05,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 10:00:05,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:00:05,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 10:00:05,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-07-13 10:00:05,355 INFO L87 Difference]: Start difference. First operand 83 states and 97 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-13 10:00:05,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:00:05,377 INFO L93 Difference]: Finished difference Result 142 states and 170 transitions. [2022-07-13 10:00:05,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 10:00:05,377 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 172 [2022-07-13 10:00:05,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:00:05,378 INFO L225 Difference]: With dead ends: 142 [2022-07-13 10:00:05,378 INFO L226 Difference]: Without dead ends: 91 [2022-07-13 10:00:05,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-07-13 10:00:05,379 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 9 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 10:00:05,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 51 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 10:00:05,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-07-13 10:00:05,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2022-07-13 10:00:05,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 86 states have (on average 1.1511627906976745) internal successors, (99), 86 states have internal predecessors, (99), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 10:00:05,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 105 transitions. [2022-07-13 10:00:05,386 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 105 transitions. Word has length 172 [2022-07-13 10:00:05,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:00:05,387 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 105 transitions. [2022-07-13 10:00:05,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-13 10:00:05,387 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 105 transitions. [2022-07-13 10:00:05,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-07-13 10:00:05,389 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:00:05,389 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 10, 10, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:00:05,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-13 10:00:05,603 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 [2022-07-13 10:00:05,604 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:00:05,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:00:05,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1450203185, now seen corresponding path program 6 times [2022-07-13 10:00:05,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:00:05,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419793106] [2022-07-13 10:00:05,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:00:05,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:00:05,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:00:05,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 10:00:05,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:00:05,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 10:00:05,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:00:05,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 10:00:05,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:00:05,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1945 trivial. 0 not checked. [2022-07-13 10:00:05,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:00:05,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419793106] [2022-07-13 10:00:05,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419793106] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 10:00:05,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613192950] [2022-07-13 10:00:05,735 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-13 10:00:05,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:00:05,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:00:05,736 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 10:00:05,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-13 10:00:06,369 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2022-07-13 10:00:06,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 10:00:06,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 10:00:06,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:00:06,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 850 proven. 36 refuted. 0 times theorem prover too weak. 1095 trivial. 0 not checked. [2022-07-13 10:00:06,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:00:06,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1945 trivial. 0 not checked. [2022-07-13 10:00:06,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613192950] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 10:00:06,466 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 10:00:06,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2022-07-13 10:00:06,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475225470] [2022-07-13 10:00:06,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 10:00:06,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 10:00:06,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:00:06,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 10:00:06,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-07-13 10:00:06,469 INFO L87 Difference]: Start difference. First operand 91 states and 105 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-13 10:00:06,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:00:06,492 INFO L93 Difference]: Finished difference Result 148 states and 175 transitions. [2022-07-13 10:00:06,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 10:00:06,492 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 180 [2022-07-13 10:00:06,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:00:06,496 INFO L225 Difference]: With dead ends: 148 [2022-07-13 10:00:06,496 INFO L226 Difference]: Without dead ends: 97 [2022-07-13 10:00:06,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 362 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-07-13 10:00:06,497 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 9 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 10:00:06,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 99 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 10:00:06,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-07-13 10:00:06,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2022-07-13 10:00:06,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 92 states have (on average 1.141304347826087) internal successors, (105), 92 states have internal predecessors, (105), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 10:00:06,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 111 transitions. [2022-07-13 10:00:06,520 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 111 transitions. Word has length 180 [2022-07-13 10:00:06,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:00:06,522 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 111 transitions. [2022-07-13 10:00:06,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-13 10:00:06,522 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 111 transitions. [2022-07-13 10:00:06,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-07-13 10:00:06,523 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:00:06,524 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 10, 10, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:00:06,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-13 10:00:06,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-13 10:00:06,748 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:00:06,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:00:06,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1435992661, now seen corresponding path program 7 times [2022-07-13 10:00:06,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:00:06,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774557877] [2022-07-13 10:00:06,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:00:06,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:00:06,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:00:07,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 10:00:07,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:00:07,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 10:00:07,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:00:07,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-13 10:00:07,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:00:07,447 INFO L134 CoverageAnalysis]: Checked inductivity of 2026 backedges. 38 proven. 1214 refuted. 0 times theorem prover too weak. 774 trivial. 0 not checked. [2022-07-13 10:00:07,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:00:07,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774557877] [2022-07-13 10:00:07,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774557877] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 10:00:07,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64725666] [2022-07-13 10:00:07,448 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-13 10:00:07,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:00:07,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:00:07,450 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 10:00:07,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-13 10:00:07,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:00:07,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 640 conjuncts, 167 conjunts are in the unsatisfiable core [2022-07-13 10:00:07,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:00:10,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:10,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:10,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:10,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:10,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:10,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:10,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:10,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:10,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:10,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:10,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:10,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:10,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:10,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:10,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:10,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:10,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:10,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:10,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:10,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:10,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:10,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:10,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:10,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:10,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:10,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:10,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:10,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:10,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:10,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:10,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:10,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:10,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:10,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:10,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:10,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:10,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:10,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:10,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:10,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:10,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:10,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:10,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:10,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:10,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:10,479 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 10:00:10,480 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 146 treesize of output 116 [2022-07-13 10:00:11,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,559 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:00:11,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,579 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 10:00:11,579 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 141 treesize of output 118 [2022-07-13 10:00:11,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,829 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 10:00:11,830 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 130 treesize of output 108 [2022-07-13 10:00:11,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,981 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:00:11,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:11,998 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 10:00:11,998 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 130 treesize of output 108 [2022-07-13 10:00:12,260 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:00:12,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:12,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:12,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:12,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:12,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:12,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:12,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:12,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:12,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:12,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:12,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:12,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:12,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:12,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:12,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:12,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:12,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:12,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:12,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:12,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:12,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:12,276 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 10:00:12,276 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 117 treesize of output 98 [2022-07-13 10:00:12,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:12,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:12,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:12,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:12,504 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:00:12,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:12,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:12,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:12,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:12,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:12,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:12,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:12,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:12,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:12,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:12,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:12,516 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 10:00:12,517 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 102 treesize of output 86 [2022-07-13 10:00:12,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:12,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:12,715 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:00:12,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:12,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:12,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:12,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:12,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:12,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:12,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:12,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:12,730 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 10:00:12,730 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 87 treesize of output 74 [2022-07-13 10:00:12,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:12,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:12,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:12,934 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:00:12,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:12,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:12,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:12,938 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 10:00:12,939 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 72 treesize of output 62 [2022-07-13 10:00:13,142 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:00:13,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:13,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:13,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:13,146 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 10:00:13,146 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 50 [2022-07-13 10:00:13,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:13,322 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 10:00:13,322 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 49 treesize of output 30 [2022-07-13 10:00:13,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:00:13,429 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 10:00:13,429 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 40 treesize of output 27 [2022-07-13 10:00:15,013 INFO L134 CoverageAnalysis]: Checked inductivity of 2026 backedges. 8 proven. 1827 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2022-07-13 10:00:15,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:01:29,854 INFO L356 Elim1Store]: treesize reduction 432, result has 0.2 percent of original size [2022-07-13 10:01:29,854 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 136 treesize of output 1 [2022-07-13 10:01:34,750 INFO L356 Elim1Store]: treesize reduction 698, result has 28.4 percent of original size [2022-07-13 10:01:34,750 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 183 treesize of output 304 [2022-07-13 10:01:41,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2026 backedges. 588 proven. 1145 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2022-07-13 10:01:41,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64725666] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 10:01:41,481 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 10:01:41,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 83, 72] total 163 [2022-07-13 10:01:41,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109489297] [2022-07-13 10:01:41,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 10:01:41,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 163 states [2022-07-13 10:01:41,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:01:41,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 163 interpolants. [2022-07-13 10:01:41,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1325, Invalid=25052, Unknown=29, NotChecked=0, Total=26406 [2022-07-13 10:01:41,489 INFO L87 Difference]: Start difference. First operand 97 states and 111 transitions. Second operand has 163 states, 160 states have (on average 1.81875) internal successors, (291), 159 states have internal predecessors, (291), 8 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (9), 6 states have call predecessors, (9), 8 states have call successors, (9) [2022-07-13 10:04:20,369 WARN L233 SmtUtils]: Spent 6.08s on a formula simplification. DAG size of input: 65 DAG size of output: 64 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-13 10:04:20,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:04:20,846 INFO L93 Difference]: Finished difference Result 1020 states and 1297 transitions. [2022-07-13 10:04:20,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 631 states. [2022-07-13 10:04:20,847 INFO L78 Accepts]: Start accepts. Automaton has has 163 states, 160 states have (on average 1.81875) internal successors, (291), 159 states have internal predecessors, (291), 8 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (9), 6 states have call predecessors, (9), 8 states have call successors, (9) Word has length 186 [2022-07-13 10:04:20,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:04:20,857 INFO L225 Difference]: With dead ends: 1020 [2022-07-13 10:04:20,857 INFO L226 Difference]: Without dead ends: 902 [2022-07-13 10:04:20,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 982 GetRequests, 281 SyntacticMatches, 3 SemanticMatches, 698 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186361 ImplicationChecksByTransitivity, 236.9s TimeCoverageRelationStatistics Valid=17409, Invalid=471838, Unknown=53, NotChecked=0, Total=489300 [2022-07-13 10:04:20,903 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 1370 mSDsluCounter, 2438 mSDsCounter, 0 mSdLazyCounter, 6020 mSolverCounterSat, 609 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1376 SdHoareTripleChecker+Valid, 2471 SdHoareTripleChecker+Invalid, 28777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 609 IncrementalHoareTripleChecker+Valid, 6020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22148 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-07-13 10:04:20,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1376 Valid, 2471 Invalid, 28777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [609 Valid, 6020 Invalid, 0 Unknown, 22148 Unchecked, 4.2s Time] [2022-07-13 10:04:20,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2022-07-13 10:04:20,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 644. [2022-07-13 10:04:20,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 644 states, 621 states have (on average 1.2254428341384862) internal successors, (761), 630 states have internal predecessors, (761), 10 states have call successors, (10), 3 states have call predecessors, (10), 12 states have return successors, (73), 10 states have call predecessors, (73), 10 states have call successors, (73) [2022-07-13 10:04:20,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 844 transitions. [2022-07-13 10:04:20,958 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 844 transitions. Word has length 186 [2022-07-13 10:04:20,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:04:20,959 INFO L495 AbstractCegarLoop]: Abstraction has 644 states and 844 transitions. [2022-07-13 10:04:20,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 163 states, 160 states have (on average 1.81875) internal successors, (291), 159 states have internal predecessors, (291), 8 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (9), 6 states have call predecessors, (9), 8 states have call successors, (9) [2022-07-13 10:04:20,960 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 844 transitions. [2022-07-13 10:04:20,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-07-13 10:04:20,965 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:04:20,966 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 28, 10, 10, 9, 9, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:04:20,991 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-07-13 10:04:21,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-13 10:04:21,180 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:04:21,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:04:21,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1427363051, now seen corresponding path program 1 times [2022-07-13 10:04:21,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:04:21,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162576438] [2022-07-13 10:04:21,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:04:21,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:04:21,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:04:23,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 10:04:23,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:04:25,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 10:04:25,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:04:27,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-13 10:04:27,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:04:28,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2026 backedges. 33 proven. 1946 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-07-13 10:04:28,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:04:28,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162576438] [2022-07-13 10:04:28,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162576438] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 10:04:28,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336012718] [2022-07-13 10:04:28,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:04:28,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:04:28,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:04:28,398 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 10:04:28,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-13 10:04:28,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:04:28,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 282 conjunts are in the unsatisfiable core [2022-07-13 10:04:28,609 INFO L286 TraceCheckSpWp]: Computing forward predicates...