./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/standard_copyInitSum3_ground.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 26d01a9c 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-examples/standard_copyInitSum3_ground.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 9e3997a2a1cd8cbe038fe2c0a5bc044283ed06667aa7ef42f046d1134291f84e --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-16 23:06:56,639 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 23:06:56,641 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 23:06:56,672 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 23:06:56,673 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 23:06:56,675 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 23:06:56,677 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 23:06:56,678 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 23:06:56,680 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 23:06:56,680 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 23:06:56,681 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 23:06:56,683 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 23:06:56,683 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 23:06:56,686 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 23:06:56,687 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 23:06:56,688 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 23:06:56,689 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 23:06:56,690 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 23:06:56,691 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 23:06:56,695 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 23:06:56,696 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 23:06:56,696 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 23:06:56,697 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 23:06:56,698 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 23:06:56,704 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 23:06:56,704 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 23:06:56,704 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 23:06:56,705 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 23:06:56,706 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 23:06:56,706 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 23:06:56,706 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 23:06:56,707 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 23:06:56,708 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 23:06:56,709 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 23:06:56,710 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 23:06:56,710 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 23:06:56,710 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 23:06:56,710 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 23:06:56,710 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 23:06:56,711 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 23:06:56,712 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 23:06:56,713 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-16 23:06:56,734 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 23:06:56,734 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 23:06:56,735 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 23:06:56,735 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 23:06:56,736 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 23:06:56,736 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 23:06:56,736 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 23:06:56,736 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 23:06:56,736 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 23:06:56,736 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 23:06:56,737 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-16 23:06:56,737 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 23:06:56,737 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-16 23:06:56,737 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 23:06:56,738 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-16 23:06:56,738 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 23:06:56,738 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-16 23:06:56,738 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-16 23:06:56,738 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-16 23:06:56,738 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 23:06:56,738 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-16 23:06:56,739 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 23:06:56,739 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 23:06:56,739 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 23:06:56,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 23:06:56,739 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 23:06:56,739 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 23:06:56,740 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-16 23:06:56,740 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-16 23:06:56,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-16 23:06:56,740 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 23:06:56,740 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-16 23:06:56,740 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 23:06:56,741 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 23:06:56,741 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 23:06:56,741 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e3997a2a1cd8cbe038fe2c0a5bc044283ed06667aa7ef42f046d1134291f84e [2023-02-16 23:06:56,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 23:06:56,952 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 23:06:56,954 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 23:06:56,954 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 23:06:56,955 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 23:06:56,956 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_copyInitSum3_ground.i [2023-02-16 23:06:57,914 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 23:06:58,117 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 23:06:58,117 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_copyInitSum3_ground.i [2023-02-16 23:06:58,121 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2cb98bb8/0188774fccdc4db7a7c2bce0128bba07/FLAG0a57b0e96 [2023-02-16 23:06:58,141 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2cb98bb8/0188774fccdc4db7a7c2bce0128bba07 [2023-02-16 23:06:58,143 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 23:06:58,145 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 23:06:58,146 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 23:06:58,146 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 23:06:58,149 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 23:06:58,149 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 11:06:58" (1/1) ... [2023-02-16 23:06:58,150 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f77ba6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 11:06:58, skipping insertion in model container [2023-02-16 23:06:58,150 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 11:06:58" (1/1) ... [2023-02-16 23:06:58,155 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 23:06:58,166 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 23:06:58,265 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-examples/standard_copyInitSum3_ground.i[821,834] [2023-02-16 23:06:58,281 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 23:06:58,288 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 23:06:58,298 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-examples/standard_copyInitSum3_ground.i[821,834] [2023-02-16 23:06:58,310 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 23:06:58,319 INFO L208 MainTranslator]: Completed translation [2023-02-16 23:06:58,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 11:06:58 WrapperNode [2023-02-16 23:06:58,320 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 23:06:58,321 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 23:06:58,321 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 23:06:58,321 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 23:06:58,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 11:06:58" (1/1) ... [2023-02-16 23:06:58,331 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 11:06:58" (1/1) ... [2023-02-16 23:06:58,344 INFO L138 Inliner]: procedures = 15, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 80 [2023-02-16 23:06:58,345 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 23:06:58,345 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 23:06:58,345 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 23:06:58,346 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 23:06:58,351 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 11:06:58" (1/1) ... [2023-02-16 23:06:58,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 11:06:58" (1/1) ... [2023-02-16 23:06:58,353 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 11:06:58" (1/1) ... [2023-02-16 23:06:58,353 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 11:06:58" (1/1) ... [2023-02-16 23:06:58,356 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 11:06:58" (1/1) ... [2023-02-16 23:06:58,359 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 11:06:58" (1/1) ... [2023-02-16 23:06:58,359 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 11:06:58" (1/1) ... [2023-02-16 23:06:58,360 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 11:06:58" (1/1) ... [2023-02-16 23:06:58,361 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 23:06:58,362 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 23:06:58,362 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 23:06:58,362 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 23:06:58,363 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 11:06:58" (1/1) ... [2023-02-16 23:06:58,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 23:06:58,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 23:06:58,391 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) [2023-02-16 23:06:58,400 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 [2023-02-16 23:06:58,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-16 23:06:58,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-16 23:06:58,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-16 23:06:58,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-16 23:06:58,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 23:06:58,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 23:06:58,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-16 23:06:58,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-16 23:06:58,466 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 23:06:58,468 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 23:06:58,612 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 23:06:58,617 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 23:06:58,625 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2023-02-16 23:06:58,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 11:06:58 BoogieIcfgContainer [2023-02-16 23:06:58,627 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 23:06:58,629 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-16 23:06:58,629 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-16 23:06:58,631 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-16 23:06:58,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 11:06:58" (1/3) ... [2023-02-16 23:06:58,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@390ab9c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 11:06:58, skipping insertion in model container [2023-02-16 23:06:58,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 11:06:58" (2/3) ... [2023-02-16 23:06:58,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@390ab9c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 11:06:58, skipping insertion in model container [2023-02-16 23:06:58,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 11:06:58" (3/3) ... [2023-02-16 23:06:58,647 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_copyInitSum3_ground.i [2023-02-16 23:06:58,659 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-16 23:06:58,663 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-16 23:06:58,724 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-16 23:06:58,746 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;@2458c972, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-16 23:06:58,747 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-16 23:06:58,750 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 23:06:58,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-16 23:06:58,755 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 23:06:58,755 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 23:06:58,755 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 23:06:58,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 23:06:58,759 INFO L85 PathProgramCache]: Analyzing trace with hash -211808190, now seen corresponding path program 1 times [2023-02-16 23:06:58,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 23:06:58,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118617067] [2023-02-16 23:06:58,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 23:06:58,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 23:06:58,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 23:06:58,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 23:06:58,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 23:06:58,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118617067] [2023-02-16 23:06:58,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118617067] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 23:06:58,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 23:06:58,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 23:06:58,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319417347] [2023-02-16 23:06:58,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 23:06:58,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 23:06:58,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 23:06:58,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 23:06:58,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 23:06:58,933 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 23:06:58,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 23:06:58,971 INFO L93 Difference]: Finished difference Result 50 states and 76 transitions. [2023-02-16 23:06:58,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 23:06:58,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-02-16 23:06:58,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 23:06:58,979 INFO L225 Difference]: With dead ends: 50 [2023-02-16 23:06:58,979 INFO L226 Difference]: Without dead ends: 26 [2023-02-16 23:06:58,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 23:06:58,983 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 3 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 23:06:58,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 32 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 23:06:58,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-02-16 23:06:59,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2023-02-16 23:06:59,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 23:06:59,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2023-02-16 23:06:59,006 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 13 [2023-02-16 23:06:59,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 23:06:59,007 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2023-02-16 23:06:59,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 23:06:59,007 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2023-02-16 23:06:59,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-16 23:06:59,008 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 23:06:59,008 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 23:06:59,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-16 23:06:59,008 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 23:06:59,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 23:06:59,009 INFO L85 PathProgramCache]: Analyzing trace with hash 343774103, now seen corresponding path program 1 times [2023-02-16 23:06:59,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 23:06:59,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552334162] [2023-02-16 23:06:59,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 23:06:59,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 23:06:59,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 23:06:59,112 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-16 23:06:59,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 23:06:59,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552334162] [2023-02-16 23:06:59,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552334162] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 23:06:59,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820045596] [2023-02-16 23:06:59,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 23:06:59,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 23:06:59,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 23:06:59,154 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) [2023-02-16 23:06:59,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-16 23:06:59,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 23:06:59,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-16 23:06:59,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 23:06:59,232 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-16 23:06:59,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 23:06:59,245 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-16 23:06:59,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820045596] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 23:06:59,245 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 23:06:59,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-02-16 23:06:59,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596776642] [2023-02-16 23:06:59,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 23:06:59,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-16 23:06:59,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 23:06:59,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-16 23:06:59,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-02-16 23:06:59,248 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 23:06:59,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 23:06:59,313 INFO L93 Difference]: Finished difference Result 63 states and 82 transitions. [2023-02-16 23:06:59,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-16 23:06:59,314 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-02-16 23:06:59,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 23:06:59,315 INFO L225 Difference]: With dead ends: 63 [2023-02-16 23:06:59,315 INFO L226 Difference]: Without dead ends: 44 [2023-02-16 23:06:59,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-02-16 23:06:59,316 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 18 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 23:06:59,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 40 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 23:06:59,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-02-16 23:06:59,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-02-16 23:06:59,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 43 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 23:06:59,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2023-02-16 23:06:59,336 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 20 [2023-02-16 23:06:59,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 23:06:59,337 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2023-02-16 23:06:59,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 23:06:59,337 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2023-02-16 23:06:59,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-02-16 23:06:59,338 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 23:06:59,338 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 23:06:59,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-16 23:06:59,544 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 [2023-02-16 23:06:59,544 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 23:06:59,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 23:06:59,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1712584598, now seen corresponding path program 2 times [2023-02-16 23:06:59,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 23:06:59,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144848353] [2023-02-16 23:06:59,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 23:06:59,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 23:06:59,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 23:06:59,766 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-02-16 23:06:59,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 23:06:59,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144848353] [2023-02-16 23:06:59,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144848353] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 23:06:59,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847947010] [2023-02-16 23:06:59,767 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 23:06:59,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 23:06:59,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 23:06:59,770 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) [2023-02-16 23:06:59,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-16 23:06:59,857 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 23:06:59,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 23:06:59,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-16 23:06:59,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 23:06:59,893 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-02-16 23:06:59,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 23:06:59,943 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-02-16 23:06:59,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847947010] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 23:06:59,944 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 23:06:59,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-02-16 23:06:59,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944824246] [2023-02-16 23:06:59,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 23:06:59,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-16 23:06:59,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 23:06:59,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-16 23:06:59,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-02-16 23:06:59,948 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 23:07:00,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 23:07:00,088 INFO L93 Difference]: Finished difference Result 123 states and 154 transitions. [2023-02-16 23:07:00,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-16 23:07:00,089 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2023-02-16 23:07:00,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 23:07:00,090 INFO L225 Difference]: With dead ends: 123 [2023-02-16 23:07:00,091 INFO L226 Difference]: Without dead ends: 86 [2023-02-16 23:07:00,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 72 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-02-16 23:07:00,093 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 54 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 23:07:00,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 48 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 23:07:00,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-02-16 23:07:00,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2023-02-16 23:07:00,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.0588235294117647) internal successors, (90), 85 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 23:07:00,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 90 transitions. [2023-02-16 23:07:00,111 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 90 transitions. Word has length 41 [2023-02-16 23:07:00,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 23:07:00,111 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 90 transitions. [2023-02-16 23:07:00,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 23:07:00,113 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 90 transitions. [2023-02-16 23:07:00,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-02-16 23:07:00,116 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 23:07:00,116 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 23:07:00,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-16 23:07:00,320 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 [2023-02-16 23:07:00,321 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 23:07:00,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 23:07:00,322 INFO L85 PathProgramCache]: Analyzing trace with hash -108691546, now seen corresponding path program 3 times [2023-02-16 23:07:00,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 23:07:00,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942902336] [2023-02-16 23:07:00,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 23:07:00,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 23:07:00,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 23:07:00,559 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2023-02-16 23:07:00,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 23:07:00,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942902336] [2023-02-16 23:07:00,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942902336] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 23:07:00,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100642592] [2023-02-16 23:07:00,560 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-16 23:07:00,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 23:07:00,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 23:07:00,586 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) [2023-02-16 23:07:00,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-16 23:07:01,194 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-02-16 23:07:01,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 23:07:01,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-16 23:07:01,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 23:07:01,262 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2023-02-16 23:07:01,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 23:07:01,392 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2023-02-16 23:07:01,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100642592] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 23:07:01,392 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 23:07:01,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2023-02-16 23:07:01,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808000389] [2023-02-16 23:07:01,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 23:07:01,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-02-16 23:07:01,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 23:07:01,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-02-16 23:07:01,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-02-16 23:07:01,394 INFO L87 Difference]: Start difference. First operand 86 states and 90 transitions. Second operand has 25 states, 25 states have (on average 1.72) internal successors, (43), 25 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 23:07:01,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 23:07:01,633 INFO L93 Difference]: Finished difference Result 243 states and 298 transitions. [2023-02-16 23:07:01,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-02-16 23:07:01,633 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.72) internal successors, (43), 25 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2023-02-16 23:07:01,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 23:07:01,634 INFO L225 Difference]: With dead ends: 243 [2023-02-16 23:07:01,634 INFO L226 Difference]: Without dead ends: 170 [2023-02-16 23:07:01,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 144 SyntacticMatches, 10 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-02-16 23:07:01,635 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 180 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 23:07:01,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 40 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 23:07:01,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2023-02-16 23:07:01,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2023-02-16 23:07:01,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 1.029585798816568) internal successors, (174), 169 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 23:07:01,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 174 transitions. [2023-02-16 23:07:01,644 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 174 transitions. Word has length 83 [2023-02-16 23:07:01,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 23:07:01,644 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 174 transitions. [2023-02-16 23:07:01,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.72) internal successors, (43), 25 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 23:07:01,644 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 174 transitions. [2023-02-16 23:07:01,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-02-16 23:07:01,646 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 23:07:01,646 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 23:07:01,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-16 23:07:01,852 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 [2023-02-16 23:07:01,852 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 23:07:01,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 23:07:01,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1893487586, now seen corresponding path program 4 times [2023-02-16 23:07:01,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 23:07:01,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801794298] [2023-02-16 23:07:01,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 23:07:01,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 23:07:01,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 23:07:02,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2023-02-16 23:07:02,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 23:07:02,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801794298] [2023-02-16 23:07:02,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801794298] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 23:07:02,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691472605] [2023-02-16 23:07:02,541 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-16 23:07:02,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 23:07:02,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 23:07:02,555 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) [2023-02-16 23:07:02,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-16 23:07:02,743 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-16 23:07:02,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 23:07:02,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 685 conjuncts, 24 conjunts are in the unsatisfiable core [2023-02-16 23:07:02,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 23:07:02,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 1221 trivial. 0 not checked. [2023-02-16 23:07:02,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 23:07:03,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 1221 trivial. 0 not checked. [2023-02-16 23:07:03,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691472605] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 23:07:03,537 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 23:07:03,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2023-02-16 23:07:03,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870263132] [2023-02-16 23:07:03,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 23:07:03,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-02-16 23:07:03,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 23:07:03,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-02-16 23:07:03,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-02-16 23:07:03,540 INFO L87 Difference]: Start difference. First operand 170 states and 174 transitions. Second operand has 49 states, 49 states have (on average 2.938775510204082) internal successors, (144), 49 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 23:07:04,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 23:07:04,035 INFO L93 Difference]: Finished difference Result 483 states and 586 transitions. [2023-02-16 23:07:04,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-02-16 23:07:04,036 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.938775510204082) internal successors, (144), 49 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 167 [2023-02-16 23:07:04,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 23:07:04,037 INFO L225 Difference]: With dead ends: 483 [2023-02-16 23:07:04,037 INFO L226 Difference]: Without dead ends: 338 [2023-02-16 23:07:04,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 288 SyntacticMatches, 22 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-02-16 23:07:04,039 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 287 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 425 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 425 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-16 23:07:04,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 48 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [425 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-16 23:07:04,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2023-02-16 23:07:04,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 338. [2023-02-16 23:07:04,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 337 states have (on average 1.0148367952522255) internal successors, (342), 337 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 23:07:04,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 342 transitions. [2023-02-16 23:07:04,051 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 342 transitions. Word has length 167 [2023-02-16 23:07:04,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 23:07:04,051 INFO L495 AbstractCegarLoop]: Abstraction has 338 states and 342 transitions. [2023-02-16 23:07:04,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.938775510204082) internal successors, (144), 49 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 23:07:04,051 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 342 transitions. [2023-02-16 23:07:04,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2023-02-16 23:07:04,059 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 23:07:04,059 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 23:07:04,077 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-02-16 23:07:04,265 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 [2023-02-16 23:07:04,265 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 23:07:04,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 23:07:04,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1914240270, now seen corresponding path program 5 times [2023-02-16 23:07:04,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 23:07:04,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990491753] [2023-02-16 23:07:04,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 23:07:04,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 23:07:04,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 23:07:06,347 INFO L134 CoverageAnalysis]: Checked inductivity of 7429 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 6348 trivial. 0 not checked. [2023-02-16 23:07:06,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 23:07:06,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990491753] [2023-02-16 23:07:06,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990491753] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 23:07:06,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324233150] [2023-02-16 23:07:06,348 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-16 23:07:06,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 23:07:06,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 23:07:06,361 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) [2023-02-16 23:07:06,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process