./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-patterns/array21_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 574ddb4e Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-patterns/array21_pattern.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f1a738dced8b73ebc8edf3e480fddcd32bb19127a8255980e93fab5e96705ab3 --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-17 05:05:28,516 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 05:05:28,517 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 05:05:28,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 05:05:28,549 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 05:05:28,551 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 05:05:28,553 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 05:05:28,554 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 05:05:28,556 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 05:05:28,560 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 05:05:28,561 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 05:05:28,561 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 05:05:28,561 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 05:05:28,562 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 05:05:28,562 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 05:05:28,563 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 05:05:28,563 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 05:05:28,564 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 05:05:28,565 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 05:05:28,566 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 05:05:28,566 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 05:05:28,569 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 05:05:28,570 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 05:05:28,571 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 05:05:28,577 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 05:05:28,577 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 05:05:28,578 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 05:05:28,579 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 05:05:28,579 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 05:05:28,580 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 05:05:28,580 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 05:05:28,580 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 05:05:28,581 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 05:05:28,582 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 05:05:28,583 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 05:05:28,583 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 05:05:28,583 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 05:05:28,583 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 05:05:28,583 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 05:05:28,598 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 05:05:28,599 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 05:05:28,600 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-17 05:05:28,633 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 05:05:28,634 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 05:05:28,634 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 05:05:28,634 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 05:05:28,635 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 05:05:28,635 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 05:05:28,636 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 05:05:28,636 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 05:05:28,636 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 05:05:28,636 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 05:05:28,637 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 05:05:28,637 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 05:05:28,637 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 05:05:28,637 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 05:05:28,637 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 05:05:28,637 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 05:05:28,637 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 05:05:28,638 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 05:05:28,638 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 05:05:28,638 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 05:05:28,638 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 05:05:28,638 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 05:05:28,638 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 05:05:28,638 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 05:05:28,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 05:05:28,639 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 05:05:28,639 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 05:05:28,639 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 05:05:28,639 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 05:05:28,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 05:05:28,639 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 05:05:28,639 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 05:05:28,640 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 05:05:28,640 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 05:05:28,640 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 05:05:28,640 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1a738dced8b73ebc8edf3e480fddcd32bb19127a8255980e93fab5e96705ab3 [2023-02-17 05:05:28,834 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 05:05:28,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 05:05:28,853 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 05:05:28,854 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 05:05:28,854 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 05:05:28,855 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array21_pattern.c [2023-02-17 05:05:29,907 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 05:05:30,069 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 05:05:30,070 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array21_pattern.c [2023-02-17 05:05:30,078 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa5f50023/2337a0d6591f42fd84e259514248a246/FLAG90864b71d [2023-02-17 05:05:30,092 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa5f50023/2337a0d6591f42fd84e259514248a246 [2023-02-17 05:05:30,094 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 05:05:30,095 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 05:05:30,096 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 05:05:30,096 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 05:05:30,098 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 05:05:30,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 05:05:30" (1/1) ... [2023-02-17 05:05:30,099 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f5f836d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:05:30, skipping insertion in model container [2023-02-17 05:05:30,100 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 05:05:30" (1/1) ... [2023-02-17 05:05:30,105 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 05:05:30,119 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 05:05:30,227 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array21_pattern.c[1340,1353] [2023-02-17 05:05:30,254 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 05:05:30,259 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 05:05:30,266 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array21_pattern.c[1340,1353] [2023-02-17 05:05:30,272 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 05:05:30,281 INFO L208 MainTranslator]: Completed translation [2023-02-17 05:05:30,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:05:30 WrapperNode [2023-02-17 05:05:30,281 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 05:05:30,282 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 05:05:30,282 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 05:05:30,282 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 05:05:30,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:05:30" (1/1) ... [2023-02-17 05:05:30,291 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:05:30" (1/1) ... [2023-02-17 05:05:30,303 INFO L138 Inliner]: procedures = 17, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 105 [2023-02-17 05:05:30,303 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 05:05:30,304 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 05:05:30,304 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 05:05:30,304 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 05:05:30,310 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:05:30" (1/1) ... [2023-02-17 05:05:30,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:05:30" (1/1) ... [2023-02-17 05:05:30,311 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:05:30" (1/1) ... [2023-02-17 05:05:30,312 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:05:30" (1/1) ... [2023-02-17 05:05:30,315 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:05:30" (1/1) ... [2023-02-17 05:05:30,317 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:05:30" (1/1) ... [2023-02-17 05:05:30,318 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:05:30" (1/1) ... [2023-02-17 05:05:30,319 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:05:30" (1/1) ... [2023-02-17 05:05:30,320 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 05:05:30,321 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 05:05:30,321 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 05:05:30,321 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 05:05:30,322 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:05:30" (1/1) ... [2023-02-17 05:05:30,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 05:05:30,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 05:05:30,341 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) [2023-02-17 05:05:30,346 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 [2023-02-17 05:05:30,365 INFO L130 BoogieDeclarations]: Found specification of procedure outerBoundaryPatternCheck [2023-02-17 05:05:30,365 INFO L138 BoogieDeclarations]: Found implementation of procedure outerBoundaryPatternCheck [2023-02-17 05:05:30,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 05:05:30,365 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-17 05:05:30,365 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-17 05:05:30,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 05:05:30,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-17 05:05:30,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-17 05:05:30,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 05:05:30,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 05:05:30,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-17 05:05:30,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-17 05:05:30,415 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 05:05:30,417 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 05:05:30,520 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 05:05:30,525 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 05:05:30,525 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2023-02-17 05:05:30,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 05:05:30 BoogieIcfgContainer [2023-02-17 05:05:30,527 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 05:05:30,528 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 05:05:30,528 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 05:05:30,531 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 05:05:30,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 05:05:30" (1/3) ... [2023-02-17 05:05:30,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f4c48b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 05:05:30, skipping insertion in model container [2023-02-17 05:05:30,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:05:30" (2/3) ... [2023-02-17 05:05:30,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f4c48b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 05:05:30, skipping insertion in model container [2023-02-17 05:05:30,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 05:05:30" (3/3) ... [2023-02-17 05:05:30,533 INFO L112 eAbstractionObserver]: Analyzing ICFG array21_pattern.c [2023-02-17 05:05:30,570 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 05:05:30,580 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-17 05:05:30,626 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 05:05:30,633 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@25985ad7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 05:05:30,634 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-17 05:05:30,636 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 32 states have internal predecessors, (48), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-17 05:05:30,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-17 05:05:30,648 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:05:30,648 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 05:05:30,649 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:05:30,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:05:30,653 INFO L85 PathProgramCache]: Analyzing trace with hash 2136211159, now seen corresponding path program 1 times [2023-02-17 05:05:30,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 05:05:30,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630182362] [2023-02-17 05:05:30,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:05:30,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 05:05:30,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:05:30,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 05:05:30,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630182362] [2023-02-17 05:05:30,754 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-17 05:05:30,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300838201] [2023-02-17 05:05:30,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:05:30,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 05:05:30,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 05:05:30,758 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) [2023-02-17 05:05:30,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-17 05:05:30,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:05:30,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-17 05:05:30,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 05:05:30,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 05:05:30,839 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 05:05:30,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300838201] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 05:05:30,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 05:05:30,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 05:05:30,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511207531] [2023-02-17 05:05:30,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 05:05:30,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-17 05:05:30,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 05:05:30,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-17 05:05:30,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 05:05:30,865 INFO L87 Difference]: Start difference. First operand has 40 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 32 states have internal predecessors, (48), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 05:05:30,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:05:30,888 INFO L93 Difference]: Finished difference Result 77 states and 115 transitions. [2023-02-17 05:05:30,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-17 05:05:30,890 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-02-17 05:05:30,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:05:30,895 INFO L225 Difference]: With dead ends: 77 [2023-02-17 05:05:30,895 INFO L226 Difference]: Without dead ends: 36 [2023-02-17 05:05:30,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 05:05:30,903 INFO L413 NwaCegarLoop]: 50 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, 50 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 [2023-02-17 05:05:30,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 05:05:30,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-02-17 05:05:30,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2023-02-17 05:05:30,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-17 05:05:30,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 46 transitions. [2023-02-17 05:05:30,937 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 46 transitions. Word has length 15 [2023-02-17 05:05:30,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:05:30,938 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 46 transitions. [2023-02-17 05:05:30,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 05:05:30,938 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 46 transitions. [2023-02-17 05:05:30,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-02-17 05:05:30,940 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:05:30,940 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 05:05:30,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-17 05:05:31,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-02-17 05:05:31,143 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:05:31,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:05:31,143 INFO L85 PathProgramCache]: Analyzing trace with hash -699940082, now seen corresponding path program 1 times [2023-02-17 05:05:31,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 05:05:31,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443059080] [2023-02-17 05:05:31,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:05:31,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 05:05:31,159 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 05:05:31,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1429661444] [2023-02-17 05:05:31,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:05:31,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 05:05:31,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 05:05:31,161 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) [2023-02-17 05:05:31,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-17 05:05:31,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:05:31,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-17 05:05:31,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 05:05:31,255 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 05:05:31,256 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 05:05:31,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 05:05:31,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443059080] [2023-02-17 05:05:31,256 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 05:05:31,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429661444] [2023-02-17 05:05:31,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429661444] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 05:05:31,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 05:05:31,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-17 05:05:31,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116889385] [2023-02-17 05:05:31,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 05:05:31,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-17 05:05:31,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 05:05:31,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-17 05:05:31,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-02-17 05:05:31,259 INFO L87 Difference]: Start difference. First operand 36 states and 46 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 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) [2023-02-17 05:05:31,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:05:31,334 INFO L93 Difference]: Finished difference Result 76 states and 96 transitions. [2023-02-17 05:05:31,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-17 05:05:31,335 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 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 35 [2023-02-17 05:05:31,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:05:31,336 INFO L225 Difference]: With dead ends: 76 [2023-02-17 05:05:31,336 INFO L226 Difference]: Without dead ends: 48 [2023-02-17 05:05:31,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-02-17 05:05:31,337 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 59 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 05:05:31,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 89 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 05:05:31,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-02-17 05:05:31,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2023-02-17 05:05:31,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-17 05:05:31,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions. [2023-02-17 05:05:31,343 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 35 [2023-02-17 05:05:31,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:05:31,344 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions. [2023-02-17 05:05:31,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 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) [2023-02-17 05:05:31,344 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2023-02-17 05:05:31,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-02-17 05:05:31,345 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:05:31,345 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 05:05:31,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-17 05:05:31,550 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,SelfDestructingSolverStorable1 [2023-02-17 05:05:31,550 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:05:31,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:05:31,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1308831759, now seen corresponding path program 1 times [2023-02-17 05:05:31,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 05:05:31,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560585664] [2023-02-17 05:05:31,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:05:31,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 05:05:31,571 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 05:05:31,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1672405046] [2023-02-17 05:05:31,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:05:31,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 05:05:31,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 05:05:31,573 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) [2023-02-17 05:05:31,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-17 05:05:31,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:05:31,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-17 05:05:31,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 05:05:31,638 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-17 05:05:31,638 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 05:05:31,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 05:05:31,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560585664] [2023-02-17 05:05:31,638 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 05:05:31,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672405046] [2023-02-17 05:05:31,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672405046] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 05:05:31,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 05:05:31,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 05:05:31,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699610096] [2023-02-17 05:05:31,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 05:05:31,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-17 05:05:31,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 05:05:31,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-17 05:05:31,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-17 05:05:31,641 INFO L87 Difference]: Start difference. First operand 42 states and 51 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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) [2023-02-17 05:05:31,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:05:31,670 INFO L93 Difference]: Finished difference Result 79 states and 99 transitions. [2023-02-17 05:05:31,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-17 05:05:31,671 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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 41 [2023-02-17 05:05:31,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:05:31,672 INFO L225 Difference]: With dead ends: 79 [2023-02-17 05:05:31,672 INFO L226 Difference]: Without dead ends: 46 [2023-02-17 05:05:31,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-17 05:05:31,673 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 29 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 05:05:31,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 76 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 05:05:31,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-02-17 05:05:31,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2023-02-17 05:05:31,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 35 states have internal predecessors, (43), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-17 05:05:31,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2023-02-17 05:05:31,678 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 41 [2023-02-17 05:05:31,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:05:31,678 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2023-02-17 05:05:31,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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) [2023-02-17 05:05:31,678 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2023-02-17 05:05:31,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-02-17 05:05:31,679 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:05:31,679 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 05:05:31,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-17 05:05:31,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 05:05:31,883 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:05:31,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:05:31,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1300942485, now seen corresponding path program 1 times [2023-02-17 05:05:31,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 05:05:31,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396457581] [2023-02-17 05:05:31,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:05:31,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 05:05:31,892 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 05:05:31,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [576505828] [2023-02-17 05:05:31,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:05:31,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 05:05:31,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 05:05:31,894 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) [2023-02-17 05:05:31,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-17 05:05:31,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:05:31,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-17 05:05:31,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 05:05:31,974 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-17 05:05:31,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 05:05:32,041 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-02-17 05:05:32,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 05:05:32,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396457581] [2023-02-17 05:05:32,042 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 05:05:32,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576505828] [2023-02-17 05:05:32,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576505828] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 05:05:32,042 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 05:05:32,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-02-17 05:05:32,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33259658] [2023-02-17 05:05:32,043 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 05:05:32,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-17 05:05:32,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 05:05:32,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-17 05:05:32,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-02-17 05:05:32,044 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 12 states have internal predecessors, (48), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-02-17 05:05:32,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:05:32,152 INFO L93 Difference]: Finished difference Result 85 states and 105 transitions. [2023-02-17 05:05:32,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-17 05:05:32,152 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 12 states have internal predecessors, (48), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 45 [2023-02-17 05:05:32,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:05:32,154 INFO L225 Difference]: With dead ends: 85 [2023-02-17 05:05:32,154 INFO L226 Difference]: Without dead ends: 50 [2023-02-17 05:05:32,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 74 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=266, Unknown=0, NotChecked=0, Total=380 [2023-02-17 05:05:32,157 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 80 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 05:05:32,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 105 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 05:05:32,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-02-17 05:05:32,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2023-02-17 05:05:32,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 39 states have (on average 1.205128205128205) internal successors, (47), 39 states have internal predecessors, (47), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-17 05:05:32,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2023-02-17 05:05:32,168 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 45 [2023-02-17 05:05:32,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:05:32,168 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 57 transitions. [2023-02-17 05:05:32,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 12 states have internal predecessors, (48), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-02-17 05:05:32,168 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2023-02-17 05:05:32,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-02-17 05:05:32,169 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:05:32,169 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 05:05:32,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-17 05:05:32,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 05:05:32,377 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:05:32,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:05:32,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1544610617, now seen corresponding path program 2 times [2023-02-17 05:05:32,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 05:05:32,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125693925] [2023-02-17 05:05:32,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:05:32,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 05:05:32,407 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 05:05:32,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1620422232] [2023-02-17 05:05:32,407 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 05:05:32,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 05:05:32,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 05:05:32,413 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) [2023-02-17 05:05:32,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-17 05:05:32,467 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 05:05:32,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 05:05:32,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-17 05:05:32,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 05:05:32,484 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-17 05:05:32,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 05:05:32,512 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-02-17 05:05:32,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 05:05:32,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125693925] [2023-02-17 05:05:32,512 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 05:05:32,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620422232] [2023-02-17 05:05:32,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620422232] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 05:05:32,513 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 05:05:32,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2023-02-17 05:05:32,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322175000] [2023-02-17 05:05:32,513 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 05:05:32,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-17 05:05:32,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 05:05:32,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-17 05:05:32,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-02-17 05:05:32,514 INFO L87 Difference]: Start difference. First operand 48 states and 57 transitions. Second operand has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-02-17 05:05:32,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:05:32,603 INFO L93 Difference]: Finished difference Result 106 states and 128 transitions. [2023-02-17 05:05:32,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-17 05:05:32,603 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 49 [2023-02-17 05:05:32,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:05:32,604 INFO L225 Difference]: With dead ends: 106 [2023-02-17 05:05:32,604 INFO L226 Difference]: Without dead ends: 74 [2023-02-17 05:05:32,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-02-17 05:05:32,605 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 59 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 05:05:32,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 154 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 05:05:32,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-02-17 05:05:32,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 62. [2023-02-17 05:05:32,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 53 states have (on average 1.1886792452830188) internal successors, (63), 53 states have internal predecessors, (63), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-17 05:05:32,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 73 transitions. [2023-02-17 05:05:32,610 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 73 transitions. Word has length 49 [2023-02-17 05:05:32,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:05:32,611 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 73 transitions. [2023-02-17 05:05:32,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-02-17 05:05:32,611 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 73 transitions. [2023-02-17 05:05:32,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-02-17 05:05:32,612 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:05:32,612 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 05:05:32,617 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-02-17 05:05:32,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 05:05:32,819 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:05:32,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:05:32,820 INFO L85 PathProgramCache]: Analyzing trace with hash -725408594, now seen corresponding path program 3 times [2023-02-17 05:05:32,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 05:05:32,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571901465] [2023-02-17 05:05:32,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:05:32,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 05:05:32,829 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 05:05:32,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1093096461] [2023-02-17 05:05:32,829 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 05:05:32,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 05:05:32,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 05:05:32,830 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) [2023-02-17 05:05:32,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-17 05:05:32,979 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-02-17 05:05:32,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 05:05:32,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 78 conjunts are in the unsatisfiable core [2023-02-17 05:05:32,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 05:05:33,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2023-02-17 05:05:33,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 40 [2023-02-17 05:05:33,067 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 05:05:33,068 INFO L350 Elim1Store]: Elim1 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 3 case distinctions, treesize of input 58 treesize of output 198 [2023-02-17 05:05:33,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 05:05:33,116 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 05:05:33,116 INFO L350 Elim1Store]: Elim1 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 4 case distinctions, treesize of input 223 treesize of output 326 [2023-02-17 05:05:58,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 05:05:58,732 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-17 05:05:58,765 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-17 05:05:59,115 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 05:05:59,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 170 select indices, 170 select index equivalence classes, 1 disjoint index pairs (out of 14365 index pairs), introduced 170 new quantified variables, introduced 14535 case distinctions, treesize of input 10586 treesize of output 446335