./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/standard_init3_ground-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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_init3_ground-2.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 e3a23c39a71f68ea97a16f1ff860e4af783e55492bb64ac88412e1e3f7ca41d5 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-20 20:39:17,267 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 20:39:17,269 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 20:39:17,303 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 20:39:17,303 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 20:39:17,304 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 20:39:17,306 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 20:39:17,311 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 20:39:17,312 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 20:39:17,316 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 20:39:17,317 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 20:39:17,318 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 20:39:17,318 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 20:39:17,320 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 20:39:17,321 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 20:39:17,324 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 20:39:17,324 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 20:39:17,326 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 20:39:17,327 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 20:39:17,332 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 20:39:17,334 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 20:39:17,334 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 20:39:17,335 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 20:39:17,336 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 20:39:17,337 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 20:39:17,343 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 20:39:17,343 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 20:39:17,344 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 20:39:17,344 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 20:39:17,345 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 20:39:17,346 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 20:39:17,346 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 20:39:17,347 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 20:39:17,348 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 20:39:17,349 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 20:39:17,349 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 20:39:17,350 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 20:39:17,351 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 20:39:17,351 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 20:39:17,352 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 20:39:17,352 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 20:39:17,354 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 20:39:17,355 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-20 20:39:17,374 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 20:39:17,374 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 20:39:17,375 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 20:39:17,375 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 20:39:17,375 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 20:39:17,376 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 20:39:17,376 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 20:39:17,376 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 20:39:17,376 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 20:39:17,377 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 20:39:17,377 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-20 20:39:17,377 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-20 20:39:17,377 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-20 20:39:17,377 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 20:39:17,377 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-20 20:39:17,377 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 20:39:17,378 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-20 20:39:17,378 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-20 20:39:17,378 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-20 20:39:17,378 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 20:39:17,378 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-20 20:39:17,378 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 20:39:17,378 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 20:39:17,379 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 20:39:17,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 20:39:17,381 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 20:39:17,381 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 20:39:17,382 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-20 20:39:17,382 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-20 20:39:17,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-20 20:39:17,382 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-20 20:39:17,382 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-20 20:39:17,383 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-20 20:39:17,383 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e3a23c39a71f68ea97a16f1ff860e4af783e55492bb64ac88412e1e3f7ca41d5 [2022-07-20 20:39:17,612 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 20:39:17,630 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 20:39:17,632 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 20:39:17,633 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 20:39:17,633 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 20:39:17,634 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_init3_ground-2.i [2022-07-20 20:39:17,693 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a4b9c760/8cc00f572f9042e58f84d520d84dc4a7/FLAG16cb5fdab [2022-07-20 20:39:18,079 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 20:39:18,080 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_init3_ground-2.i [2022-07-20 20:39:18,084 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a4b9c760/8cc00f572f9042e58f84d520d84dc4a7/FLAG16cb5fdab [2022-07-20 20:39:18,093 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a4b9c760/8cc00f572f9042e58f84d520d84dc4a7 [2022-07-20 20:39:18,095 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 20:39:18,096 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 20:39:18,099 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 20:39:18,099 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 20:39:18,101 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 20:39:18,102 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 08:39:18" (1/1) ... [2022-07-20 20:39:18,103 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23eae7b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:39:18, skipping insertion in model container [2022-07-20 20:39:18,103 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 08:39:18" (1/1) ... [2022-07-20 20:39:18,108 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 20:39:18,119 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 20:39:18,241 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_init3_ground-2.i[816,829] [2022-07-20 20:39:18,252 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 20:39:18,257 INFO L203 MainTranslator]: Completed pre-run [2022-07-20 20:39:18,265 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_init3_ground-2.i[816,829] [2022-07-20 20:39:18,269 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 20:39:18,276 INFO L208 MainTranslator]: Completed translation [2022-07-20 20:39:18,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:39:18 WrapperNode [2022-07-20 20:39:18,277 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-20 20:39:18,278 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-20 20:39:18,278 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-20 20:39:18,278 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-20 20:39:18,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:39:18" (1/1) ... [2022-07-20 20:39:18,287 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:39:18" (1/1) ... [2022-07-20 20:39:18,300 INFO L137 Inliner]: procedures = 15, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 54 [2022-07-20 20:39:18,300 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-20 20:39:18,301 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-20 20:39:18,301 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-20 20:39:18,301 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-20 20:39:18,305 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:39:18" (1/1) ... [2022-07-20 20:39:18,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:39:18" (1/1) ... [2022-07-20 20:39:18,307 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:39:18" (1/1) ... [2022-07-20 20:39:18,307 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:39:18" (1/1) ... [2022-07-20 20:39:18,310 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:39:18" (1/1) ... [2022-07-20 20:39:18,313 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:39:18" (1/1) ... [2022-07-20 20:39:18,314 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:39:18" (1/1) ... [2022-07-20 20:39:18,316 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-20 20:39:18,316 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-20 20:39:18,316 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-20 20:39:18,317 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-20 20:39:18,317 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:39:18" (1/1) ... [2022-07-20 20:39:18,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 20:39:18,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 20:39:18,350 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-20 20:39:18,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-20 20:39:18,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-20 20:39:18,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-20 20:39:18,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-20 20:39:18,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-20 20:39:18,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-20 20:39:18,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-20 20:39:18,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-20 20:39:18,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-20 20:39:18,427 INFO L234 CfgBuilder]: Building ICFG [2022-07-20 20:39:18,429 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-20 20:39:18,510 INFO L275 CfgBuilder]: Performing block encoding [2022-07-20 20:39:18,514 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-20 20:39:18,515 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-20 20:39:18,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 08:39:18 BoogieIcfgContainer [2022-07-20 20:39:18,516 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-20 20:39:18,517 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-20 20:39:18,517 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-20 20:39:18,520 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-20 20:39:18,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 08:39:18" (1/3) ... [2022-07-20 20:39:18,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd1d7e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 08:39:18, skipping insertion in model container [2022-07-20 20:39:18,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:39:18" (2/3) ... [2022-07-20 20:39:18,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd1d7e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 08:39:18, skipping insertion in model container [2022-07-20 20:39:18,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 08:39:18" (3/3) ... [2022-07-20 20:39:18,522 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_init3_ground-2.i [2022-07-20 20:39:18,536 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-20 20:39:18,537 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-20 20:39:18,581 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-20 20:39:18,586 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7de21fea, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@53c5cc34 [2022-07-20 20:39:18,586 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-20 20:39:18,591 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 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) [2022-07-20 20:39:18,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-20 20:39:18,596 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 20:39:18,596 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 20:39:18,597 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 20:39:18,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 20:39:18,609 INFO L85 PathProgramCache]: Analyzing trace with hash -93359874, now seen corresponding path program 1 times [2022-07-20 20:39:18,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 20:39:18,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095786287] [2022-07-20 20:39:18,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 20:39:18,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 20:39:18,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 20:39:18,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 20:39:18,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 20:39:18,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095786287] [2022-07-20 20:39:18,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095786287] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 20:39:18,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 20:39:18,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 20:39:18,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687895004] [2022-07-20 20:39:18,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 20:39:18,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 20:39:18,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 20:39:18,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 20:39:18,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 20:39:18,799 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2022-07-20 20:39:18,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 20:39:18,828 INFO L93 Difference]: Finished difference Result 36 states and 56 transitions. [2022-07-20 20:39:18,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 20:39:18,830 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) Word has length 11 [2022-07-20 20:39:18,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 20:39:18,836 INFO L225 Difference]: With dead ends: 36 [2022-07-20 20:39:18,836 INFO L226 Difference]: Without dead ends: 17 [2022-07-20 20:39:18,838 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 [2022-07-20 20:39:18,844 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 20:39:18,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 20:39:18,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-07-20 20:39:18,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-07-20 20:39:18,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 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) [2022-07-20 20:39:18,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2022-07-20 20:39:18,879 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 11 [2022-07-20 20:39:18,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 20:39:18,879 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2022-07-20 20:39:18,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2022-07-20 20:39:18,895 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2022-07-20 20:39:18,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-20 20:39:18,896 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 20:39:18,896 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 20:39:18,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-20 20:39:18,897 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 20:39:18,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 20:39:18,898 INFO L85 PathProgramCache]: Analyzing trace with hash -168681064, now seen corresponding path program 1 times [2022-07-20 20:39:18,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 20:39:18,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141738099] [2022-07-20 20:39:18,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 20:39:18,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 20:39:18,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 20:39:18,970 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-20 20:39:18,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 20:39:18,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141738099] [2022-07-20 20:39:18,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141738099] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 20:39:18,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090527698] [2022-07-20 20:39:18,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 20:39:18,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 20:39:18,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 20:39:18,983 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 20:39:19,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-20 20:39:19,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 20:39:19,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-20 20:39:19,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 20:39:19,088 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-20 20:39:19,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 20:39:19,126 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-20 20:39:19,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090527698] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 20:39:19,126 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-20 20:39:19,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-07-20 20:39:19,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341499049] [2022-07-20 20:39:19,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-20 20:39:19,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-20 20:39:19,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 20:39:19,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-20 20:39:19,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-20 20:39:19,130 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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) [2022-07-20 20:39:19,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 20:39:19,182 INFO L93 Difference]: Finished difference Result 39 states and 53 transitions. [2022-07-20 20:39:19,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 20:39:19,183 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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 14 [2022-07-20 20:39:19,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 20:39:19,184 INFO L225 Difference]: With dead ends: 39 [2022-07-20 20:39:19,184 INFO L226 Difference]: Without dead ends: 26 [2022-07-20 20:39:19,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-20 20:39:19,186 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 20:39:19,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 20:39:19,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-07-20 20:39:19,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-07-20 20:39:19,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.16) internal successors, (29), 25 states have internal predecessors, (29), 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) [2022-07-20 20:39:19,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2022-07-20 20:39:19,193 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 14 [2022-07-20 20:39:19,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 20:39:19,193 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2022-07-20 20:39:19,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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) [2022-07-20 20:39:19,193 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2022-07-20 20:39:19,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-20 20:39:19,194 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 20:39:19,194 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 20:39:19,212 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-20 20:39:19,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 20:39:19,400 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 20:39:19,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 20:39:19,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1736848510, now seen corresponding path program 2 times [2022-07-20 20:39:19,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 20:39:19,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176590679] [2022-07-20 20:39:19,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 20:39:19,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 20:39:19,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 20:39:19,490 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-20 20:39:19,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 20:39:19,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176590679] [2022-07-20 20:39:19,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176590679] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 20:39:19,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122887354] [2022-07-20 20:39:19,491 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-20 20:39:19,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 20:39:19,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 20:39:19,493 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 20:39:19,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-20 20:39:19,583 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-20 20:39:19,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 20:39:19,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-20 20:39:19,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 20:39:19,619 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-20 20:39:19,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 20:39:19,692 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-20 20:39:19,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122887354] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 20:39:19,693 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-20 20:39:19,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-07-20 20:39:19,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59117708] [2022-07-20 20:39:19,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-20 20:39:19,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-20 20:39:19,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 20:39:19,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-20 20:39:19,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-07-20 20:39:19,699 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 20:39:19,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 20:39:19,812 INFO L93 Difference]: Finished difference Result 63 states and 86 transitions. [2022-07-20 20:39:19,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-20 20:39:19,813 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-07-20 20:39:19,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 20:39:19,816 INFO L225 Difference]: With dead ends: 63 [2022-07-20 20:39:19,816 INFO L226 Difference]: Without dead ends: 44 [2022-07-20 20:39:19,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-07-20 20:39:19,819 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 20:39:19,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 20:39:19,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-07-20 20:39:19,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-07-20 20:39:19,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.0930232558139534) internal successors, (47), 43 states have internal predecessors, (47), 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) [2022-07-20 20:39:19,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2022-07-20 20:39:19,842 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 23 [2022-07-20 20:39:19,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 20:39:19,843 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2022-07-20 20:39:19,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 20:39:19,844 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2022-07-20 20:39:19,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-20 20:39:19,845 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 20:39:19,845 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 20:39:19,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-20 20:39:20,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-07-20 20:39:20,060 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 20:39:20,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 20:39:20,060 INFO L85 PathProgramCache]: Analyzing trace with hash -468119106, now seen corresponding path program 3 times [2022-07-20 20:39:20,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 20:39:20,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648138548] [2022-07-20 20:39:20,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 20:39:20,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 20:39:20,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 20:39:20,281 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-07-20 20:39:20,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 20:39:20,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648138548] [2022-07-20 20:39:20,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648138548] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 20:39:20,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295320728] [2022-07-20 20:39:20,282 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-20 20:39:20,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 20:39:20,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 20:39:20,284 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 20:39:20,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-20 20:39:20,823 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-07-20 20:39:20,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 20:39:20,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-20 20:39:20,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 20:39:20,877 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-07-20 20:39:20,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 20:39:21,088 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-20 20:39:21,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295320728] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 20:39:21,089 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-20 20:39:21,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-07-20 20:39:21,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097334403] [2022-07-20 20:39:21,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-20 20:39:21,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-20 20:39:21,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 20:39:21,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-20 20:39:21,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-07-20 20:39:21,092 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand has 25 states, 25 states have (on average 2.08) internal successors, (52), 25 states have internal predecessors, (52), 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) [2022-07-20 20:39:21,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 20:39:21,233 INFO L93 Difference]: Finished difference Result 111 states and 152 transitions. [2022-07-20 20:39:21,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-20 20:39:21,234 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.08) internal successors, (52), 25 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-07-20 20:39:21,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 20:39:21,235 INFO L225 Difference]: With dead ends: 111 [2022-07-20 20:39:21,235 INFO L226 Difference]: Without dead ends: 80 [2022-07-20 20:39:21,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-07-20 20:39:21,241 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 20:39:21,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 78 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 20:39:21,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-07-20 20:39:21,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2022-07-20 20:39:21,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.0506329113924051) internal successors, (83), 79 states have internal predecessors, (83), 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) [2022-07-20 20:39:21,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 83 transitions. [2022-07-20 20:39:21,262 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 83 transitions. Word has length 41 [2022-07-20 20:39:21,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 20:39:21,265 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 83 transitions. [2022-07-20 20:39:21,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.08) internal successors, (52), 25 states have internal predecessors, (52), 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) [2022-07-20 20:39:21,266 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 83 transitions. [2022-07-20 20:39:21,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-20 20:39:21,269 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 20:39:21,269 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 20:39:21,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-20 20:39:21,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 20:39:21,489 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 20:39:21,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 20:39:21,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1058733118, now seen corresponding path program 4 times [2022-07-20 20:39:21,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 20:39:21,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325223887] [2022-07-20 20:39:21,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 20:39:21,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 20:39:21,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 20:39:21,909 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2022-07-20 20:39:21,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 20:39:21,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325223887] [2022-07-20 20:39:21,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325223887] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 20:39:21,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632486341] [2022-07-20 20:39:21,909 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-20 20:39:21,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 20:39:21,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 20:39:21,911 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 20:39:21,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-20 20:39:22,049 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-20 20:39:22,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 20:39:22,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-20 20:39:22,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 20:39:22,121 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2022-07-20 20:39:22,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 20:39:22,785 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2022-07-20 20:39:22,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632486341] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 20:39:22,785 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-20 20:39:22,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2022-07-20 20:39:22,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864138374] [2022-07-20 20:39:22,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-20 20:39:22,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-07-20 20:39:22,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 20:39:22,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-07-20 20:39:22,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-07-20 20:39:22,788 INFO L87 Difference]: Start difference. First operand 80 states and 83 transitions. Second operand has 49 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 49 states have internal predecessors, (61), 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) [2022-07-20 20:39:23,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 20:39:23,107 INFO L93 Difference]: Finished difference Result 207 states and 284 transitions. [2022-07-20 20:39:23,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-07-20 20:39:23,108 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 49 states have internal predecessors, (61), 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 77 [2022-07-20 20:39:23,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 20:39:23,111 INFO L225 Difference]: With dead ends: 207 [2022-07-20 20:39:23,111 INFO L226 Difference]: Without dead ends: 152 [2022-07-20 20:39:23,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-07-20 20:39:23,114 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 369 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 369 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 20:39:23,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 62 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [369 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 20:39:23,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-07-20 20:39:23,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2022-07-20 20:39:23,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 1.0264900662251655) internal successors, (155), 151 states have internal predecessors, (155), 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) [2022-07-20 20:39:23,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 155 transitions. [2022-07-20 20:39:23,129 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 155 transitions. Word has length 77 [2022-07-20 20:39:23,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 20:39:23,130 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 155 transitions. [2022-07-20 20:39:23,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 49 states have internal predecessors, (61), 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) [2022-07-20 20:39:23,130 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 155 transitions. [2022-07-20 20:39:23,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-20 20:39:23,132 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 20:39:23,132 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 20:39:23,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-20 20:39:23,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 20:39:23,339 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 20:39:23,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 20:39:23,340 INFO L85 PathProgramCache]: Analyzing trace with hash -99643074, now seen corresponding path program 5 times [2022-07-20 20:39:23,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 20:39:23,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806073114] [2022-07-20 20:39:23,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 20:39:23,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 20:39:23,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 20:39:24,328 INFO L134 CoverageAnalysis]: Checked inductivity of 3243 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 2162 trivial. 0 not checked. [2022-07-20 20:39:24,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 20:39:24,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806073114] [2022-07-20 20:39:24,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806073114] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 20:39:24,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664872415] [2022-07-20 20:39:24,330 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-20 20:39:24,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 20:39:24,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 20:39:24,332 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 20:39:24,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process