./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops-crafted-1/mono-crafted_11.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/loops-crafted-1/mono-crafted_11.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 c506323d3bd63f7e6137c28fc1be825d2491f66f4e75ccbab60530df37ca16f1 --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-17 06:39:54,194 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 06:39:54,195 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 06:39:54,225 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 06:39:54,225 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 06:39:54,227 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 06:39:54,228 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 06:39:54,230 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 06:39:54,232 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 06:39:54,235 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 06:39:54,236 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 06:39:54,237 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 06:39:54,238 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 06:39:54,239 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 06:39:54,240 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 06:39:54,241 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 06:39:54,241 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 06:39:54,242 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 06:39:54,243 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 06:39:54,247 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 06:39:54,247 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 06:39:54,248 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 06:39:54,249 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 06:39:54,250 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 06:39:54,255 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 06:39:54,255 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 06:39:54,256 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 06:39:54,257 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 06:39:54,257 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 06:39:54,258 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 06:39:54,258 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 06:39:54,258 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 06:39:54,260 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 06:39:54,260 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 06:39:54,261 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 06:39:54,261 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 06:39:54,261 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 06:39:54,262 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 06:39:54,265 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 06:39:54,266 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 06:39:54,267 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 06:39:54,268 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-17 06:39:54,296 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 06:39:54,297 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 06:39:54,297 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 06:39:54,297 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 06:39:54,298 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 06:39:54,298 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 06:39:54,298 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 06:39:54,299 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 06:39:54,299 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 06:39:54,299 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 06:39:54,299 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 06:39:54,300 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 06:39:54,300 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 06:39:54,300 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 06:39:54,300 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 06:39:54,300 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 06:39:54,300 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 06:39:54,300 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 06:39:54,301 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 06:39:54,301 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 06:39:54,301 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 06:39:54,301 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 06:39:54,301 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 06:39:54,301 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 06:39:54,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 06:39:54,302 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 06:39:54,302 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 06:39:54,302 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 06:39:54,302 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 06:39:54,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 06:39:54,302 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 06:39:54,303 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 06:39:54,303 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 06:39:54,303 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 06:39:54,303 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 06:39:54,303 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c506323d3bd63f7e6137c28fc1be825d2491f66f4e75ccbab60530df37ca16f1 [2023-02-17 06:39:54,495 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 06:39:54,515 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 06:39:54,517 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 06:39:54,518 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 06:39:54,518 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 06:39:54,519 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops-crafted-1/mono-crafted_11.c [2023-02-17 06:39:55,678 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 06:39:55,853 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 06:39:55,853 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/mono-crafted_11.c [2023-02-17 06:39:55,859 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a7b9cd1c/5ce389fb094b4011880c4747c6589a32/FLAGd22cde8fe [2023-02-17 06:39:55,871 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a7b9cd1c/5ce389fb094b4011880c4747c6589a32 [2023-02-17 06:39:55,873 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 06:39:55,873 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 06:39:55,875 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 06:39:55,876 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 06:39:55,878 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 06:39:55,879 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 06:39:55" (1/1) ... [2023-02-17 06:39:55,879 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fa65894 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:39:55, skipping insertion in model container [2023-02-17 06:39:55,879 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 06:39:55" (1/1) ... [2023-02-17 06:39:55,884 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 06:39:55,898 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 06:39:56,022 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/loops-crafted-1/mono-crafted_11.c[319,332] [2023-02-17 06:39:56,032 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 06:39:56,042 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 06:39:56,054 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/loops-crafted-1/mono-crafted_11.c[319,332] [2023-02-17 06:39:56,057 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 06:39:56,068 INFO L208 MainTranslator]: Completed translation [2023-02-17 06:39:56,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:39:56 WrapperNode [2023-02-17 06:39:56,068 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 06:39:56,070 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 06:39:56,070 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 06:39:56,070 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 06:39:56,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:39:56" (1/1) ... [2023-02-17 06:39:56,081 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:39:56" (1/1) ... [2023-02-17 06:39:56,094 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 28 [2023-02-17 06:39:56,095 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 06:39:56,095 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 06:39:56,096 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 06:39:56,096 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 06:39:56,102 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:39:56" (1/1) ... [2023-02-17 06:39:56,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:39:56" (1/1) ... [2023-02-17 06:39:56,104 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:39:56" (1/1) ... [2023-02-17 06:39:56,105 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:39:56" (1/1) ... [2023-02-17 06:39:56,110 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:39:56" (1/1) ... [2023-02-17 06:39:56,112 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:39:56" (1/1) ... [2023-02-17 06:39:56,113 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:39:56" (1/1) ... [2023-02-17 06:39:56,113 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:39:56" (1/1) ... [2023-02-17 06:39:56,116 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 06:39:56,117 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 06:39:56,117 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 06:39:56,117 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 06:39:56,119 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:39:56" (1/1) ... [2023-02-17 06:39:56,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 06:39:56,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 06:39:56,145 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 06:39:56,162 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 06:39:56,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 06:39:56,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 06:39:56,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 06:39:56,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 06:39:56,247 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 06:39:56,279 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 06:39:56,356 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 06:39:56,359 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 06:39:56,359 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-17 06:39:56,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 06:39:56 BoogieIcfgContainer [2023-02-17 06:39:56,361 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 06:39:56,362 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 06:39:56,362 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 06:39:56,364 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 06:39:56,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 06:39:55" (1/3) ... [2023-02-17 06:39:56,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3150c4f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 06:39:56, skipping insertion in model container [2023-02-17 06:39:56,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:39:56" (2/3) ... [2023-02-17 06:39:56,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3150c4f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 06:39:56, skipping insertion in model container [2023-02-17 06:39:56,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 06:39:56" (3/3) ... [2023-02-17 06:39:56,366 INFO L112 eAbstractionObserver]: Analyzing ICFG mono-crafted_11.c [2023-02-17 06:39:56,376 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 06:39:56,377 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-17 06:39:56,409 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 06:39:56,414 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;@88fa6d3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 06:39:56,414 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-17 06:39:56,417 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 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) [2023-02-17 06:39:56,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-17 06:39:56,420 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 06:39:56,421 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-17 06:39:56,422 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 06:39:56,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 06:39:56,426 INFO L85 PathProgramCache]: Analyzing trace with hash 889937703, now seen corresponding path program 1 times [2023-02-17 06:39:56,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 06:39:56,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436159137] [2023-02-17 06:39:56,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:39:56,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 06:39:56,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:39:56,550 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 06:39:56,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 06:39:56,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436159137] [2023-02-17 06:39:56,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436159137] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 06:39:56,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 06:39:56,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 06:39:56,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765655564] [2023-02-17 06:39:56,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 06:39:56,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-17 06:39:56,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 06:39:56,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-17 06:39:56,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 06:39:56,578 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 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 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2023-02-17 06:39:56,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 06:39:56,588 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2023-02-17 06:39:56,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-17 06:39:56,590 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2023-02-17 06:39:56,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 06:39:56,594 INFO L225 Difference]: With dead ends: 20 [2023-02-17 06:39:56,594 INFO L226 Difference]: Without dead ends: 8 [2023-02-17 06:39:56,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 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 06:39:56,600 INFO L413 NwaCegarLoop]: 13 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, 13 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 06:39:56,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 06:39:56,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2023-02-17 06:39:56,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2023-02-17 06:39:56,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 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) [2023-02-17 06:39:56,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2023-02-17 06:39:56,619 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 6 [2023-02-17 06:39:56,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 06:39:56,619 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2023-02-17 06:39:56,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2023-02-17 06:39:56,620 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2023-02-17 06:39:56,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-17 06:39:56,620 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 06:39:56,620 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-17 06:39:56,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-17 06:39:56,621 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 06:39:56,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 06:39:56,622 INFO L85 PathProgramCache]: Analyzing trace with hash 889639793, now seen corresponding path program 1 times [2023-02-17 06:39:56,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 06:39:56,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874095235] [2023-02-17 06:39:56,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:39:56,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 06:39:56,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:39:56,723 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 06:39:56,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 06:39:56,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874095235] [2023-02-17 06:39:56,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874095235] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 06:39:56,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 06:39:56,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 06:39:56,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846221774] [2023-02-17 06:39:56,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 06:39:56,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 06:39:56,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 06:39:56,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 06:39:56,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 06:39:56,727 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-02-17 06:39:56,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 06:39:56,741 INFO L93 Difference]: Finished difference Result 16 states and 20 transitions. [2023-02-17 06:39:56,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 06:39:56,742 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2023-02-17 06:39:56,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 06:39:56,742 INFO L225 Difference]: With dead ends: 16 [2023-02-17 06:39:56,743 INFO L226 Difference]: Without dead ends: 10 [2023-02-17 06:39:56,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 06:39:56,744 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 1 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 06:39:56,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 10 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 06:39:56,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2023-02-17 06:39:56,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2023-02-17 06:39:56,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 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) [2023-02-17 06:39:56,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2023-02-17 06:39:56,748 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2023-02-17 06:39:56,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 06:39:56,751 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2023-02-17 06:39:56,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-02-17 06:39:56,751 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2023-02-17 06:39:56,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-17 06:39:56,752 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 06:39:56,752 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 06:39:56,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-17 06:39:56,752 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 06:39:56,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 06:39:56,753 INFO L85 PathProgramCache]: Analyzing trace with hash 295691924, now seen corresponding path program 1 times [2023-02-17 06:39:56,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 06:39:56,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90855625] [2023-02-17 06:39:56,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:39:56,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 06:39:56,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:39:56,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 06:39:56,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 06:39:56,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90855625] [2023-02-17 06:39:56,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90855625] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 06:39:56,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306457769] [2023-02-17 06:39:56,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:39:56,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 06:39:56,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 06:39:56,865 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 06:39:56,894 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 06:39:56,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:39:56,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-17 06:39:56,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 06:39:56,985 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 06:39:56,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 06:39:57,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 06:39:57,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306457769] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 06:39:57,011 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 06:39:57,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-02-17 06:39:57,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952868217] [2023-02-17 06:39:57,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 06:39:57,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-17 06:39:57,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 06:39:57,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-17 06:39:57,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-02-17 06:39:57,016 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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) [2023-02-17 06:39:57,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 06:39:57,053 INFO L93 Difference]: Finished difference Result 20 states and 26 transitions. [2023-02-17 06:39:57,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 06:39:57,054 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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 8 [2023-02-17 06:39:57,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 06:39:57,054 INFO L225 Difference]: With dead ends: 20 [2023-02-17 06:39:57,054 INFO L226 Difference]: Without dead ends: 14 [2023-02-17 06:39:57,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2023-02-17 06:39:57,055 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 06:39:57,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 21 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 06:39:57,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-02-17 06:39:57,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2023-02-17 06:39:57,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 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) [2023-02-17 06:39:57,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2023-02-17 06:39:57,059 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 8 [2023-02-17 06:39:57,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 06:39:57,059 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2023-02-17 06:39:57,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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) [2023-02-17 06:39:57,059 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2023-02-17 06:39:57,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-17 06:39:57,060 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 06:39:57,060 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 06:39:57,078 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 06:39:57,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 06:39:57,266 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 06:39:57,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 06:39:57,266 INFO L85 PathProgramCache]: Analyzing trace with hash 572634524, now seen corresponding path program 1 times [2023-02-17 06:39:57,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 06:39:57,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482278111] [2023-02-17 06:39:57,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:39:57,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 06:39:57,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:39:57,388 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 06:39:57,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 06:39:57,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482278111] [2023-02-17 06:39:57,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482278111] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 06:39:57,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544329838] [2023-02-17 06:39:57,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:39:57,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 06:39:57,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 06:39:57,390 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 06:39:57,392 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 06:39:57,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:39:57,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-17 06:39:57,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 06:39:57,449 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 06:39:57,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 06:39:57,483 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 06:39:57,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544329838] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 06:39:57,484 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 06:39:57,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 11 [2023-02-17 06:39:57,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450124242] [2023-02-17 06:39:57,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 06:39:57,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-17 06:39:57,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 06:39:57,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-17 06:39:57,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-02-17 06:39:57,486 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 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) [2023-02-17 06:39:57,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 06:39:57,589 INFO L93 Difference]: Finished difference Result 26 states and 33 transitions. [2023-02-17 06:39:57,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-17 06:39:57,590 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 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 12 [2023-02-17 06:39:57,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 06:39:57,591 INFO L225 Difference]: With dead ends: 26 [2023-02-17 06:39:57,591 INFO L226 Difference]: Without dead ends: 19 [2023-02-17 06:39:57,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2023-02-17 06:39:57,592 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 3 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 06:39:57,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 30 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 06:39:57,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-02-17 06:39:57,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-02-17 06:39:57,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 states have internal predecessors, (22), 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) [2023-02-17 06:39:57,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2023-02-17 06:39:57,596 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 12 [2023-02-17 06:39:57,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 06:39:57,596 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2023-02-17 06:39:57,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 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) [2023-02-17 06:39:57,597 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2023-02-17 06:39:57,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-17 06:39:57,597 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 06:39:57,597 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 3, 1, 1, 1, 1, 1, 1] [2023-02-17 06:39:57,614 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-17 06:39:57,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-02-17 06:39:57,802 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 06:39:57,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 06:39:57,802 INFO L85 PathProgramCache]: Analyzing trace with hash -549258615, now seen corresponding path program 2 times [2023-02-17 06:39:57,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 06:39:57,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544545326] [2023-02-17 06:39:57,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:39:57,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 06:39:57,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:39:57,877 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 06:39:57,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 06:39:57,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544545326] [2023-02-17 06:39:57,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544545326] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 06:39:57,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909743309] [2023-02-17 06:39:57,878 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 06:39:57,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 06:39:57,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 06:39:57,899 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 06:39:57,900 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 06:39:57,927 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 06:39:57,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 06:39:57,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-17 06:39:57,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 06:39:57,966 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 06:39:57,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 06:39:58,036 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 06:39:58,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909743309] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 06:39:58,037 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 06:39:58,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 8] total 14 [2023-02-17 06:39:58,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050540361] [2023-02-17 06:39:58,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 06:39:58,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-17 06:39:58,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 06:39:58,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-17 06:39:58,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2023-02-17 06:39:58,039 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 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) [2023-02-17 06:39:58,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 06:39:58,381 INFO L93 Difference]: Finished difference Result 42 states and 54 transitions. [2023-02-17 06:39:58,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-17 06:39:58,381 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 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 18 [2023-02-17 06:39:58,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 06:39:58,382 INFO L225 Difference]: With dead ends: 42 [2023-02-17 06:39:58,382 INFO L226 Difference]: Without dead ends: 31 [2023-02-17 06:39:58,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=206, Unknown=0, NotChecked=0, Total=342 [2023-02-17 06:39:58,383 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 15 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 06:39:58,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 18 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 06:39:58,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-02-17 06:39:58,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-02-17 06:39:58,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 30 states have internal predecessors, (34), 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) [2023-02-17 06:39:58,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2023-02-17 06:39:58,389 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 18 [2023-02-17 06:39:58,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 06:39:58,389 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2023-02-17 06:39:58,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 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) [2023-02-17 06:39:58,389 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2023-02-17 06:39:58,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 06:39:58,390 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 06:39:58,390 INFO L195 NwaCegarLoop]: trace histogram [12, 9, 3, 1, 1, 1, 1, 1, 1] [2023-02-17 06:39:58,411 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 06:39:58,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 06:39:58,593 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 06:39:58,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 06:39:58,594 INFO L85 PathProgramCache]: Analyzing trace with hash 199938843, now seen corresponding path program 3 times [2023-02-17 06:39:58,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 06:39:58,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178979711] [2023-02-17 06:39:58,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:39:58,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 06:39:58,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:39:58,820 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 50 proven. 90 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 06:39:58,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 06:39:58,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178979711] [2023-02-17 06:39:58,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178979711] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 06:39:58,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480961359] [2023-02-17 06:39:58,821 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 06:39:58,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 06:39:58,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 06:39:58,824 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 06:39:58,826 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 06:39:58,865 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-02-17 06:39:58,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 06:39:58,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-17 06:39:58,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 06:39:59,068 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 63 proven. 9 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-02-17 06:39:59,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 06:39:59,615 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-02-17 06:39:59,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480961359] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-17 06:39:59,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-02-17 06:39:59,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12, 7] total 22 [2023-02-17 06:39:59,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622541296] [2023-02-17 06:39:59,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 06:39:59,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-17 06:39:59,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 06:39:59,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-17 06:39:59,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2023-02-17 06:39:59,617 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 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) [2023-02-17 06:39:59,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 06:39:59,655 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2023-02-17 06:39:59,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-17 06:39:59,656 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 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 30 [2023-02-17 06:39:59,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 06:39:59,656 INFO L225 Difference]: With dead ends: 31 [2023-02-17 06:39:59,656 INFO L226 Difference]: Without dead ends: 0 [2023-02-17 06:39:59,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=122, Invalid=384, Unknown=0, NotChecked=0, Total=506 [2023-02-17 06:39:59,658 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 4 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 06:39:59,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 5 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 06:39:59,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-17 06:39:59,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-17 06:39:59,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 06:39:59,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-17 06:39:59,660 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2023-02-17 06:39:59,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 06:39:59,660 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-17 06:39:59,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 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) [2023-02-17 06:39:59,661 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-17 06:39:59,661 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-17 06:39:59,663 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-17 06:39:59,682 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 06:39:59,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 06:39:59,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-17 06:39:59,877 INFO L899 garLoopResultBuilder]: For program point L4-3(line 4) no Hoare annotation was computed. [2023-02-17 06:39:59,892 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-17 06:39:59,892 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-17 06:39:59,893 INFO L899 garLoopResultBuilder]: For program point L9(lines 9 13) no Hoare annotation was computed. [2023-02-17 06:39:59,893 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 5 18) the Hoare annotation is: true [2023-02-17 06:39:59,895 INFO L895 garLoopResultBuilder]: At program point L9-2(lines 8 14) the Hoare annotation is: (let ((.cse24 (mod |ULTIMATE.start_main_~x~0#1| 2))) (let ((.cse23 (mod (+ |ULTIMATE.start_main_~x~0#1| 3) 4294967296)) (.cse22 (mod (+ |ULTIMATE.start_main_~x~0#1| 4) 4294967296)) (.cse19 (mod (+ |ULTIMATE.start_main_~x~0#1| 2) 4294967296)) (.cse16 (= 0 .cse24)) (.cse20 (mod |ULTIMATE.start_main_~x~0#1| 4294967296))) (let ((.cse4 (< .cse20 10000000)) (.cse14 (= 0 (mod (+ .cse24 4294967294) 4294967296))) (.cse17 (= 0 (mod .cse24 4294967296))) (.cse21 (< .cse20 0)) (.cse18 (not .cse16)) (.cse2 (< .cse19 100000000)) (.cse7 (< .cse22 100000000)) (.cse5 (< .cse23 100000000))) (let ((.cse1 (or (not .cse5) (< .cse23 10000000))) (.cse9 (or (< .cse22 10000000) (not .cse7))) (.cse3 (or (< .cse19 10000000) (not .cse2))) (.cse10 (or .cse17 (and .cse21 .cse18))) (.cse11 (or .cse14 (not .cse21) .cse16)) (.cse0 (< .cse20 100000000)) (.cse12 (+ |ULTIMATE.start_main_~x~0#1| (- 1))) (.cse6 (or .cse4 (let ((.cse15 (< .cse19 0))) (and (or .cse14 (not .cse15) .cse16) (or .cse17 (and .cse18 .cse15)))))) (.cse8 (< (mod (+ |ULTIMATE.start_main_~x~0#1| 1) 4294967296) 100000000))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9) (and .cse0 .cse2 .cse10 .cse11) (and .cse0 .cse2 .cse5 .cse6 (<= 0 (+ .cse12 (- 2))) .cse7 (<= .cse12 2) .cse8) (and .cse0 .cse2 .cse4 .cse5 .cse6 .cse7 .cse8) (and (= .cse12 0) (<= |ULTIMATE.start_main_~x~0#1| 1) .cse6 (<= 0 .cse12)) (and .cse0 .cse10 .cse11) (and .cse0 .cse2 .cse5 .cse6 .cse7 .cse8) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8) (and .cse10 .cse11) (and (let ((.cse13 (mod (+ |ULTIMATE.start_main_~x~0#1| 5) 4294967296))) (or (< .cse13 10000000) (not (< .cse13 100000000)))) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9) (and .cse0 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8) (and (= |ULTIMATE.start_main_~x~0#1| 0) .cse10 .cse11) (and (<= 0 (+ .cse12 (- 1))) .cse0 (<= .cse12 1) .cse6 (<= 0 (+ |ULTIMATE.start_main_~x~0#1| (- 2))) (<= |ULTIMATE.start_main_~x~0#1| 2) .cse8)))))) [2023-02-17 06:39:59,895 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-17 06:39:59,895 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-17 06:39:59,896 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2023-02-17 06:39:59,896 INFO L899 garLoopResultBuilder]: For program point L8-2(lines 8 14) no Hoare annotation was computed. [2023-02-17 06:39:59,896 INFO L899 garLoopResultBuilder]: For program point L4(line 4) no Hoare annotation was computed. [2023-02-17 06:39:59,896 INFO L899 garLoopResultBuilder]: For program point L4-1(line 4) no Hoare annotation was computed. [2023-02-17 06:39:59,899 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2023-02-17 06:39:59,902 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-17 06:39:59,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.02 06:39:59 BoogieIcfgContainer [2023-02-17 06:39:59,949 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-17 06:39:59,949 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-17 06:39:59,949 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-17 06:39:59,949 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-17 06:39:59,950 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 06:39:56" (3/4) ... [2023-02-17 06:39:59,952 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-17 06:39:59,957 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-02-17 06:39:59,958 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-17 06:39:59,958 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-17 06:39:59,958 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-17 06:39:59,992 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-17 06:39:59,993 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-17 06:39:59,993 INFO L158 Benchmark]: Toolchain (without parser) took 4119.47ms. Allocated memory was 111.1MB in the beginning and 142.6MB in the end (delta: 31.5MB). Free memory was 67.8MB in the beginning and 87.4MB in the end (delta: -19.6MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. [2023-02-17 06:39:59,993 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 111.1MB. Free memory is still 79.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 06:39:59,993 INFO L158 Benchmark]: CACSL2BoogieTranslator took 193.24ms. Allocated memory is still 111.1MB. Free memory was 67.6MB in the beginning and 57.9MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-17 06:39:59,993 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.31ms. Allocated memory is still 111.1MB. Free memory was 57.7MB in the beginning and 56.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 06:39:59,994 INFO L158 Benchmark]: Boogie Preprocessor took 20.95ms. Allocated memory is still 111.1MB. Free memory was 56.5MB in the beginning and 55.4MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 06:39:59,994 INFO L158 Benchmark]: RCFGBuilder took 243.66ms. Allocated memory is still 111.1MB. Free memory was 55.2MB in the beginning and 81.6MB in the end (delta: -26.3MB). Peak memory consumption was 11.0MB. Max. memory is 16.1GB. [2023-02-17 06:39:59,994 INFO L158 Benchmark]: TraceAbstraction took 3587.01ms. Allocated memory was 111.1MB in the beginning and 142.6MB in the end (delta: 31.5MB). Free memory was 80.8MB in the beginning and 89.5MB in the end (delta: -8.7MB). Peak memory consumption was 22.0MB. Max. memory is 16.1GB. [2023-02-17 06:39:59,994 INFO L158 Benchmark]: Witness Printer took 43.29ms. Allocated memory is still 142.6MB. Free memory was 89.5MB in the beginning and 87.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 06:39:59,995 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 111.1MB. Free memory is still 79.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 193.24ms. Allocated memory is still 111.1MB. Free memory was 67.6MB in the beginning and 57.9MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.31ms. Allocated memory is still 111.1MB. Free memory was 57.7MB in the beginning and 56.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 20.95ms. Allocated memory is still 111.1MB. Free memory was 56.5MB in the beginning and 55.4MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 243.66ms. Allocated memory is still 111.1MB. Free memory was 55.2MB in the beginning and 81.6MB in the end (delta: -26.3MB). Peak memory consumption was 11.0MB. Max. memory is 16.1GB. * TraceAbstraction took 3587.01ms. Allocated memory was 111.1MB in the beginning and 142.6MB in the end (delta: 31.5MB). Free memory was 80.8MB in the beginning and 89.5MB in the end (delta: -8.7MB). Peak memory consumption was 22.0MB. Max. memory is 16.1GB. * Witness Printer took 43.29ms. Allocated memory is still 142.6MB. Free memory was 89.5MB in the beginning and 87.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 4]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.5s, OverallIterations: 6, TraceHistogramMax: 12, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 25 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 25 mSDsluCounter, 97 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 57 mSDsCounter, 40 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 175 IncrementalHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 40 mSolverCounterUnsat, 40 mSDtfsCounter, 175 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 174 GetRequests, 101 SyntacticMatches, 17 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=5, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 16 NumberOfFragments, 1140 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 148 NumberOfCodeBlocks, 138 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 202 ConstructedInterpolants, 0 QuantifiedInterpolants, 1473 SizeOfPredicates, 6 NumberOfNonLiveVariables, 208 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 14 InterpolantComputations, 3 PerfectInterpolantSequences, 392/570 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 8]: Loop Invariant Derived loop invariant: ((((((((((((((((((((x % 4294967296 < 100000000 && (!((x + 3) % 4294967296 < 100000000) || (x + 3) % 4294967296 < 10000000)) && (x + 2) % 4294967296 < 100000000) && ((x + 2) % 4294967296 < 10000000 || !((x + 2) % 4294967296 < 100000000))) && x % 4294967296 < 10000000) && (x + 3) % 4294967296 < 100000000) && (x % 4294967296 < 10000000 || (((0 == (x % 2 + 4294967294) % 4294967296 || !((x + 2) % 4294967296 < 0)) || 0 == x % 2) && (0 == x % 2 % 4294967296 || (!(0 == x % 2) && (x + 2) % 4294967296 < 0))))) && (x + 4) % 4294967296 < 100000000) && (x + 1) % 4294967296 < 100000000) && ((x + 4) % 4294967296 < 10000000 || !((x + 4) % 4294967296 < 100000000))) || (((x % 4294967296 < 100000000 && (x + 2) % 4294967296 < 100000000) && (0 == x % 2 % 4294967296 || (x % 4294967296 < 0 && !(0 == x % 2)))) && ((0 == (x % 2 + 4294967294) % 4294967296 || !(x % 4294967296 < 0)) || 0 == x % 2))) || (((((((x % 4294967296 < 100000000 && (x + 2) % 4294967296 < 100000000) && (x + 3) % 4294967296 < 100000000) && (x % 4294967296 < 10000000 || (((0 == (x % 2 + 4294967294) % 4294967296 || !((x + 2) % 4294967296 < 0)) || 0 == x % 2) && (0 == x % 2 % 4294967296 || (!(0 == x % 2) && (x + 2) % 4294967296 < 0))))) && 0 <= x + -1 + -2) && (x + 4) % 4294967296 < 100000000) && x + -1 <= 2) && (x + 1) % 4294967296 < 100000000)) || ((((((x % 4294967296 < 100000000 && (x + 2) % 4294967296 < 100000000) && x % 4294967296 < 10000000) && (x + 3) % 4294967296 < 100000000) && (x % 4294967296 < 10000000 || (((0 == (x % 2 + 4294967294) % 4294967296 || !((x + 2) % 4294967296 < 0)) || 0 == x % 2) && (0 == x % 2 % 4294967296 || (!(0 == x % 2) && (x + 2) % 4294967296 < 0))))) && (x + 4) % 4294967296 < 100000000) && (x + 1) % 4294967296 < 100000000)) || (((x + -1 == 0 && x <= 1) && (x % 4294967296 < 10000000 || (((0 == (x % 2 + 4294967294) % 4294967296 || !((x + 2) % 4294967296 < 0)) || 0 == x % 2) && (0 == x % 2 % 4294967296 || (!(0 == x % 2) && (x + 2) % 4294967296 < 0))))) && 0 <= x + -1)) || ((x % 4294967296 < 100000000 && (0 == x % 2 % 4294967296 || (x % 4294967296 < 0 && !(0 == x % 2)))) && ((0 == (x % 2 + 4294967294) % 4294967296 || !(x % 4294967296 < 0)) || 0 == x % 2))) || (((((x % 4294967296 < 100000000 && (x + 2) % 4294967296 < 100000000) && (x + 3) % 4294967296 < 100000000) && (x % 4294967296 < 10000000 || (((0 == (x % 2 + 4294967294) % 4294967296 || !((x + 2) % 4294967296 < 0)) || 0 == x % 2) && (0 == x % 2 % 4294967296 || (!(0 == x % 2) && (x + 2) % 4294967296 < 0))))) && (x + 4) % 4294967296 < 100000000) && (x + 1) % 4294967296 < 100000000)) || ((((((((x % 4294967296 < 100000000 && (!((x + 3) % 4294967296 < 100000000) || (x + 3) % 4294967296 < 10000000)) && (x + 2) % 4294967296 < 100000000) && ((x + 2) % 4294967296 < 10000000 || !((x + 2) % 4294967296 < 100000000))) && x % 4294967296 < 10000000) && (x + 3) % 4294967296 < 100000000) && (x % 4294967296 < 10000000 || (((0 == (x % 2 + 4294967294) % 4294967296 || !((x + 2) % 4294967296 < 0)) || 0 == x % 2) && (0 == x % 2 % 4294967296 || (!(0 == x % 2) && (x + 2) % 4294967296 < 0))))) && (x + 4) % 4294967296 < 100000000) && (x + 1) % 4294967296 < 100000000)) || ((0 == x % 2 % 4294967296 || (x % 4294967296 < 0 && !(0 == x % 2))) && ((0 == (x % 2 + 4294967294) % 4294967296 || !(x % 4294967296 < 0)) || 0 == x % 2))) || ((((((((((((x + 5) % 4294967296 < 10000000 || !((x + 5) % 4294967296 < 100000000)) && x % 4294967296 < 100000000) && (!((x + 3) % 4294967296 < 100000000) || (x + 3) % 4294967296 < 10000000)) && (x + 2) % 4294967296 < 100000000) && ((x + 2) % 4294967296 < 10000000 || !((x + 2) % 4294967296 < 100000000))) && x % 4294967296 < 10000000) && (x + 3) % 4294967296 < 100000000) && (x % 4294967296 < 10000000 || (((0 == (x % 2 + 4294967294) % 4294967296 || !((x + 2) % 4294967296 < 0)) || 0 == x % 2) && (0 == x % 2 % 4294967296 || (!(0 == x % 2) && (x + 2) % 4294967296 < 0))))) && (x + 4) % 4294967296 < 100000000) && (x + 1) % 4294967296 < 100000000) && ((x + 4) % 4294967296 < 10000000 || !((x + 4) % 4294967296 < 100000000)))) || (((((((x % 4294967296 < 100000000 && (x + 2) % 4294967296 < 100000000) && ((x + 2) % 4294967296 < 10000000 || !((x + 2) % 4294967296 < 100000000))) && x % 4294967296 < 10000000) && (x + 3) % 4294967296 < 100000000) && (x % 4294967296 < 10000000 || (((0 == (x % 2 + 4294967294) % 4294967296 || !((x + 2) % 4294967296 < 0)) || 0 == x % 2) && (0 == x % 2 % 4294967296 || (!(0 == x % 2) && (x + 2) % 4294967296 < 0))))) && (x + 4) % 4294967296 < 100000000) && (x + 1) % 4294967296 < 100000000)) || ((x == 0 && (0 == x % 2 % 4294967296 || (x % 4294967296 < 0 && !(0 == x % 2)))) && ((0 == (x % 2 + 4294967294) % 4294967296 || !(x % 4294967296 < 0)) || 0 == x % 2))) || ((((((0 <= x + -1 + -1 && x % 4294967296 < 100000000) && x + -1 <= 1) && (x % 4294967296 < 10000000 || (((0 == (x % 2 + 4294967294) % 4294967296 || !((x + 2) % 4294967296 < 0)) || 0 == x % 2) && (0 == x % 2 % 4294967296 || (!(0 == x % 2) && (x + 2) % 4294967296 < 0))))) && 0 <= x + -2) && x <= 2) && (x + 1) % 4294967296 < 100000000) RESULT: Ultimate proved your program to be correct! [2023-02-17 06:40:00,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE