./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/standard_partial_init_ground.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e8d55036 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-examples/standard_partial_init_ground.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 59d5175089b9a27cfba8f910bda680bc8b61a004048e68040b8cf993cc9cd888 --- Real Ultimate output --- This is Ultimate 0.2.2-?-e8d5503-m [2023-02-15 18:12:46,248 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 18:12:46,250 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 18:12:46,289 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 18:12:46,290 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 18:12:46,293 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 18:12:46,295 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 18:12:46,297 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 18:12:46,299 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 18:12:46,303 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 18:12:46,305 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 18:12:46,307 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 18:12:46,307 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 18:12:46,309 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 18:12:46,311 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 18:12:46,312 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 18:12:46,313 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 18:12:46,314 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 18:12:46,315 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 18:12:46,320 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 18:12:46,321 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 18:12:46,322 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 18:12:46,323 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 18:12:46,324 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 18:12:46,332 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 18:12:46,332 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 18:12:46,332 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 18:12:46,334 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 18:12:46,334 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 18:12:46,336 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 18:12:46,336 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 18:12:46,337 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 18:12:46,338 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 18:12:46,339 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 18:12:46,339 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 18:12:46,339 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 18:12:46,340 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 18:12:46,340 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 18:12:46,341 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 18:12:46,342 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 18:12:46,343 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 18:12:46,352 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 18:12:46,393 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 18:12:46,394 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 18:12:46,394 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 18:12:46,394 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 18:12:46,395 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 18:12:46,395 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 18:12:46,396 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 18:12:46,396 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 18:12:46,396 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 18:12:46,397 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 18:12:46,397 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 18:12:46,398 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 18:12:46,398 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 18:12:46,398 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 18:12:46,398 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 18:12:46,398 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 18:12:46,398 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 18:12:46,398 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 18:12:46,399 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 18:12:46,399 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 18:12:46,399 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 18:12:46,399 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 18:12:46,399 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 18:12:46,400 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 18:12:46,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 18:12:46,400 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 18:12:46,400 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 18:12:46,400 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 18:12:46,400 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 18:12:46,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 18:12:46,401 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 18:12:46,401 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 18:12:46,401 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 18:12:46,402 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 18:12:46,402 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 18:12:46,402 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 59d5175089b9a27cfba8f910bda680bc8b61a004048e68040b8cf993cc9cd888 [2023-02-15 18:12:46,636 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 18:12:46,664 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 18:12:46,667 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 18:12:46,668 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 18:12:46,668 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 18:12:46,669 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_partial_init_ground.i [2023-02-15 18:12:47,808 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 18:12:47,983 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 18:12:47,984 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_partial_init_ground.i [2023-02-15 18:12:47,990 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/072623c15/b25c505f0e54404abf7ab07060d2aad5/FLAGe10ab0986 [2023-02-15 18:12:48,008 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/072623c15/b25c505f0e54404abf7ab07060d2aad5 [2023-02-15 18:12:48,010 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 18:12:48,012 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 18:12:48,015 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 18:12:48,015 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 18:12:48,019 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 18:12:48,019 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 06:12:48" (1/1) ... [2023-02-15 18:12:48,020 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@113406ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:12:48, skipping insertion in model container [2023-02-15 18:12:48,021 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 06:12:48" (1/1) ... [2023-02-15 18:12:48,027 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 18:12:48,043 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 18:12:48,179 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_partial_init_ground.i[821,834] [2023-02-15 18:12:48,204 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 18:12:48,214 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 18:12:48,228 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_partial_init_ground.i[821,834] [2023-02-15 18:12:48,249 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 18:12:48,261 INFO L208 MainTranslator]: Completed translation [2023-02-15 18:12:48,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:12:48 WrapperNode [2023-02-15 18:12:48,261 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 18:12:48,263 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 18:12:48,263 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 18:12:48,263 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 18:12:48,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:12:48" (1/1) ... [2023-02-15 18:12:48,286 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:12:48" (1/1) ... [2023-02-15 18:12:48,306 INFO L138 Inliner]: procedures = 16, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 82 [2023-02-15 18:12:48,306 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 18:12:48,307 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 18:12:48,307 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 18:12:48,307 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 18:12:48,314 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:12:48" (1/1) ... [2023-02-15 18:12:48,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:12:48" (1/1) ... [2023-02-15 18:12:48,319 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:12:48" (1/1) ... [2023-02-15 18:12:48,319 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:12:48" (1/1) ... [2023-02-15 18:12:48,323 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:12:48" (1/1) ... [2023-02-15 18:12:48,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:12:48" (1/1) ... [2023-02-15 18:12:48,332 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:12:48" (1/1) ... [2023-02-15 18:12:48,333 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:12:48" (1/1) ... [2023-02-15 18:12:48,335 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 18:12:48,337 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 18:12:48,337 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 18:12:48,337 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 18:12:48,341 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:12:48" (1/1) ... [2023-02-15 18:12:48,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 18:12:48,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 18:12:48,366 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) [2023-02-15 18:12:48,368 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 [2023-02-15 18:12:48,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 18:12:48,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 18:12:48,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-15 18:12:48,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-15 18:12:48,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 18:12:48,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 18:12:48,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-15 18:12:48,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-15 18:12:48,415 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-15 18:12:48,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-15 18:12:48,466 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 18:12:48,468 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 18:12:48,654 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 18:12:48,669 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 18:12:48,670 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2023-02-15 18:12:48,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 06:12:48 BoogieIcfgContainer [2023-02-15 18:12:48,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 18:12:48,673 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 18:12:48,673 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 18:12:48,679 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 18:12:48,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 06:12:48" (1/3) ... [2023-02-15 18:12:48,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cfce7b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 06:12:48, skipping insertion in model container [2023-02-15 18:12:48,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:12:48" (2/3) ... [2023-02-15 18:12:48,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cfce7b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 06:12:48, skipping insertion in model container [2023-02-15 18:12:48,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 06:12:48" (3/3) ... [2023-02-15 18:12:48,682 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_partial_init_ground.i [2023-02-15 18:12:48,697 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 18:12:48,698 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 18:12:48,743 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 18:12:48,748 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;@2793e077, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 18:12:48,749 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 18:12:48,752 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 24 states have internal predecessors, (34), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 18:12:48,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-15 18:12:48,757 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 18:12:48,758 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 18:12:48,758 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 18:12:48,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 18:12:48,762 INFO L85 PathProgramCache]: Analyzing trace with hash 543579029, now seen corresponding path program 1 times [2023-02-15 18:12:48,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 18:12:48,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286938103] [2023-02-15 18:12:48,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 18:12:48,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 18:12:48,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:12:49,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 18:12:49,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 18:12:49,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286938103] [2023-02-15 18:12:49,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286938103] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 18:12:49,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 18:12:49,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 18:12:49,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529774118] [2023-02-15 18:12:49,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 18:12:49,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 18:12:49,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 18:12:49,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 18:12:49,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 18:12:49,096 INFO L87 Difference]: Start difference. First operand has 28 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 24 states have internal predecessors, (34), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 18:12:49,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 18:12:49,142 INFO L93 Difference]: Finished difference Result 57 states and 82 transitions. [2023-02-15 18:12:49,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 18:12:49,159 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-02-15 18:12:49,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 18:12:49,165 INFO L225 Difference]: With dead ends: 57 [2023-02-15 18:12:49,166 INFO L226 Difference]: Without dead ends: 29 [2023-02-15 18:12:49,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 18:12:49,171 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 4 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 18:12:49,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 51 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 18:12:49,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-02-15 18:12:49,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2023-02-15 18:12:49,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 18:12:49,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2023-02-15 18:12:49,202 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 11 [2023-02-15 18:12:49,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 18:12:49,203 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2023-02-15 18:12:49,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 18:12:49,204 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2023-02-15 18:12:49,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-15 18:12:49,204 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 18:12:49,205 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 18:12:49,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-15 18:12:49,205 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 18:12:49,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 18:12:49,206 INFO L85 PathProgramCache]: Analyzing trace with hash 2037184774, now seen corresponding path program 1 times [2023-02-15 18:12:49,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 18:12:49,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52195224] [2023-02-15 18:12:49,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 18:12:49,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 18:12:49,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:12:49,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 18:12:49,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 18:12:49,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52195224] [2023-02-15 18:12:49,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52195224] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 18:12:49,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949011199] [2023-02-15 18:12:49,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 18:12:49,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 18:12:49,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 18:12:49,305 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) [2023-02-15 18:12:49,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 18:12:49,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:12:49,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-15 18:12:49,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 18:12:49,420 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 18:12:49,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 18:12:49,464 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 18:12:49,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949011199] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 18:12:49,465 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 18:12:49,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-02-15 18:12:49,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084473406] [2023-02-15 18:12:49,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 18:12:49,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-15 18:12:49,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 18:12:49,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-15 18:12:49,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-02-15 18:12:49,471 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 18:12:49,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 18:12:49,552 INFO L93 Difference]: Finished difference Result 62 states and 80 transitions. [2023-02-15 18:12:49,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 18:12:49,553 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-02-15 18:12:49,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 18:12:49,553 INFO L225 Difference]: With dead ends: 62 [2023-02-15 18:12:49,554 INFO L226 Difference]: Without dead ends: 41 [2023-02-15 18:12:49,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-02-15 18:12:49,555 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 17 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 18:12:49,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 82 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 18:12:49,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-02-15 18:12:49,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2023-02-15 18:12:49,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 37 states have internal predecessors, (45), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 18:12:49,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2023-02-15 18:12:49,563 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 16 [2023-02-15 18:12:49,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 18:12:49,563 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2023-02-15 18:12:49,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 18:12:49,564 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2023-02-15 18:12:49,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-15 18:12:49,565 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 18:12:49,565 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 18:12:49,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-15 18:12:49,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 18:12:49,772 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 18:12:49,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 18:12:49,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1365921470, now seen corresponding path program 2 times [2023-02-15 18:12:49,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 18:12:49,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067038248] [2023-02-15 18:12:49,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 18:12:49,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 18:12:49,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:12:49,973 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-02-15 18:12:49,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 18:12:49,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067038248] [2023-02-15 18:12:49,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067038248] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 18:12:49,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358892396] [2023-02-15 18:12:49,974 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 18:12:49,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 18:12:49,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 18:12:49,977 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) [2023-02-15 18:12:49,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 18:12:50,083 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 18:12:50,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 18:12:50,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-15 18:12:50,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 18:12:50,136 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-02-15 18:12:50,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 18:12:50,222 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-02-15 18:12:50,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358892396] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 18:12:50,223 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 18:12:50,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-02-15 18:12:50,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575562246] [2023-02-15 18:12:50,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 18:12:50,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-15 18:12:50,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 18:12:50,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-15 18:12:50,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-02-15 18:12:50,228 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 18:12:50,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 18:12:50,360 INFO L93 Difference]: Finished difference Result 101 states and 134 transitions. [2023-02-15 18:12:50,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-15 18:12:50,361 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-02-15 18:12:50,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 18:12:50,364 INFO L225 Difference]: With dead ends: 101 [2023-02-15 18:12:50,364 INFO L226 Difference]: Without dead ends: 71 [2023-02-15 18:12:50,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-02-15 18:12:50,368 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 74 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 18:12:50,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 88 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 18:12:50,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-02-15 18:12:50,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2023-02-15 18:12:50,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 67 states have (on average 1.208955223880597) internal successors, (81), 67 states have internal predecessors, (81), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 18:12:50,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 85 transitions. [2023-02-15 18:12:50,392 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 85 transitions. Word has length 31 [2023-02-15 18:12:50,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 18:12:50,393 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 85 transitions. [2023-02-15 18:12:50,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 18:12:50,394 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 85 transitions. [2023-02-15 18:12:50,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-02-15 18:12:50,398 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 18:12:50,398 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 18:12:50,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-15 18:12:50,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-02-15 18:12:50,605 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 18:12:50,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 18:12:50,605 INFO L85 PathProgramCache]: Analyzing trace with hash 68306806, now seen corresponding path program 3 times [2023-02-15 18:12:50,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 18:12:50,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688461583] [2023-02-15 18:12:50,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 18:12:50,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 18:12:50,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:12:50,957 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-02-15 18:12:50,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 18:12:50,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688461583] [2023-02-15 18:12:50,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688461583] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 18:12:50,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084938261] [2023-02-15 18:12:50,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 18:12:50,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 18:12:50,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 18:12:50,960 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) [2023-02-15 18:12:50,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-15 18:12:53,823 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-02-15 18:12:53,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 18:12:53,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-15 18:12:53,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 18:12:53,920 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-02-15 18:12:53,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 18:12:54,157 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-02-15 18:12:54,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084938261] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 18:12:54,158 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 18:12:54,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2023-02-15 18:12:54,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324804898] [2023-02-15 18:12:54,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 18:12:54,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-02-15 18:12:54,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 18:12:54,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-02-15 18:12:54,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-02-15 18:12:54,165 INFO L87 Difference]: Start difference. First operand 71 states and 85 transitions. Second operand has 25 states, 25 states have (on average 4.04) internal successors, (101), 25 states have internal predecessors, (101), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 18:12:54,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 18:12:54,344 INFO L93 Difference]: Finished difference Result 179 states and 242 transitions. [2023-02-15 18:12:54,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-02-15 18:12:54,345 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.04) internal successors, (101), 25 states have internal predecessors, (101), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-02-15 18:12:54,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 18:12:54,346 INFO L225 Difference]: With dead ends: 179 [2023-02-15 18:12:54,346 INFO L226 Difference]: Without dead ends: 131 [2023-02-15 18:12:54,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-02-15 18:12:54,348 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 142 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 18:12:54,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 63 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 18:12:54,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-02-15 18:12:54,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2023-02-15 18:12:54,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 127 states have (on average 1.204724409448819) internal successors, (153), 127 states have internal predecessors, (153), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 18:12:54,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 157 transitions. [2023-02-15 18:12:54,358 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 157 transitions. Word has length 61 [2023-02-15 18:12:54,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 18:12:54,359 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 157 transitions. [2023-02-15 18:12:54,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.04) internal successors, (101), 25 states have internal predecessors, (101), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 18:12:54,359 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 157 transitions. [2023-02-15 18:12:54,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-02-15 18:12:54,360 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 18:12:54,361 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 18:12:54,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-15 18:12:54,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 18:12:54,570 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 18:12:54,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 18:12:54,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1368382430, now seen corresponding path program 4 times [2023-02-15 18:12:54,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 18:12:54,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112177332] [2023-02-15 18:12:54,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 18:12:54,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 18:12:54,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:12:55,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2023-02-15 18:12:55,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 18:12:55,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112177332] [2023-02-15 18:12:55,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112177332] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 18:12:55,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692439672] [2023-02-15 18:12:55,455 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 18:12:55,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 18:12:55,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 18:12:55,461 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) [2023-02-15 18:12:55,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-15 18:12:55,890 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 18:12:55,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 18:12:55,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 785 conjuncts, 24 conjunts are in the unsatisfiable core [2023-02-15 18:12:55,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 18:12:55,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2023-02-15 18:12:55,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 18:12:56,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2023-02-15 18:12:56,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692439672] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 18:12:56,679 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 18:12:56,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2023-02-15 18:12:56,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876233305] [2023-02-15 18:12:56,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 18:12:56,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-02-15 18:12:56,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 18:12:56,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-02-15 18:12:56,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-02-15 18:12:56,682 INFO L87 Difference]: Start difference. First operand 131 states and 157 transitions. Second operand has 49 states, 49 states have (on average 2.163265306122449) internal successors, (106), 49 states have internal predecessors, (106), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 18:12:57,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 18:12:57,138 INFO L93 Difference]: Finished difference Result 335 states and 458 transitions. [2023-02-15 18:12:57,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-02-15 18:12:57,139 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.163265306122449) internal successors, (106), 49 states have internal predecessors, (106), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2023-02-15 18:12:57,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 18:12:57,141 INFO L225 Difference]: With dead ends: 335 [2023-02-15 18:12:57,141 INFO L226 Difference]: Without dead ends: 251 [2023-02-15 18:12:57,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-02-15 18:12:57,144 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 392 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 18:12:57,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 159 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 18:12:57,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2023-02-15 18:12:57,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2023-02-15 18:12:57,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 247 states have (on average 1.2024291497975708) internal successors, (297), 247 states have internal predecessors, (297), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 18:12:57,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 301 transitions. [2023-02-15 18:12:57,174 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 301 transitions. Word has length 121 [2023-02-15 18:12:57,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 18:12:57,176 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 301 transitions. [2023-02-15 18:12:57,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.163265306122449) internal successors, (106), 49 states have internal predecessors, (106), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 18:12:57,176 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 301 transitions. [2023-02-15 18:12:57,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2023-02-15 18:12:57,188 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 18:12:57,188 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 18:12:57,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-15 18:12:57,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 18:12:57,396 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 18:12:57,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 18:12:57,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1690281134, now seen corresponding path program 5 times [2023-02-15 18:12:57,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 18:12:57,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478167621] [2023-02-15 18:12:57,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 18:12:57,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 18:12:57,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:13:00,289 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 3151 trivial. 0 not checked. [2023-02-15 18:13:00,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 18:13:00,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478167621] [2023-02-15 18:13:00,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478167621] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 18:13:00,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111524692] [2023-02-15 18:13:00,290 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-15 18:13:00,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 18:13:00,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 18:13:00,297 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 18:13:00,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process