./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-acceleration/underapprox_1-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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/loop-acceleration/underapprox_1-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3627a732530e36fdf7a132fca7d3f33785550e6f2e2a95fdbae864743bbd37d1 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 15:15:05,220 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 15:15:05,223 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 15:15:05,260 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 15:15:05,260 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 15:15:05,262 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 15:15:05,269 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 15:15:05,274 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 15:15:05,276 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 15:15:05,280 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 15:15:05,281 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 15:15:05,284 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 15:15:05,284 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 15:15:05,286 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 15:15:05,288 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 15:15:05,291 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 15:15:05,292 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 15:15:05,294 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 15:15:05,295 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 15:15:05,301 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 15:15:05,303 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 15:15:05,305 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 15:15:05,305 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 15:15:05,306 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 15:15:05,308 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 15:15:05,315 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 15:15:05,315 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 15:15:05,316 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 15:15:05,317 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 15:15:05,317 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 15:15:05,319 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 15:15:05,319 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 15:15:05,321 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 15:15:05,322 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 15:15:05,323 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 15:15:05,323 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 15:15:05,324 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 15:15:05,324 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 15:15:05,324 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 15:15:05,325 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 15:15:05,325 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 15:15:05,327 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 15:15:05,329 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 15:15:05,358 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 15:15:05,359 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 15:15:05,359 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 15:15:05,360 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 15:15:05,360 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 15:15:05,361 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 15:15:05,361 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 15:15:05,361 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 15:15:05,361 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 15:15:05,362 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 15:15:05,363 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 15:15:05,363 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 15:15:05,363 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 15:15:05,363 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 15:15:05,363 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 15:15:05,364 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 15:15:05,364 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 15:15:05,364 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 15:15:05,364 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 15:15:05,364 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 15:15:05,365 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 15:15:05,365 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 15:15:05,365 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 15:15:05,365 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 15:15:05,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 15:15:05,366 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 15:15:05,366 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 15:15:05,366 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 15:15:05,366 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 15:15:05,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 15:15:05,367 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 15:15:05,367 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 15:15:05,367 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 15:15:05,367 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3627a732530e36fdf7a132fca7d3f33785550e6f2e2a95fdbae864743bbd37d1 [2022-07-22 15:15:05,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 15:15:05,682 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 15:15:05,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 15:15:05,686 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 15:15:05,687 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 15:15:05,688 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-acceleration/underapprox_1-2.c [2022-07-22 15:15:05,754 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9303c14c1/8fd53174c1db49eaa48391e2d1dee3dc/FLAG9f01247ca [2022-07-22 15:15:06,146 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 15:15:06,147 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/underapprox_1-2.c [2022-07-22 15:15:06,151 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9303c14c1/8fd53174c1db49eaa48391e2d1dee3dc/FLAG9f01247ca [2022-07-22 15:15:06,163 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9303c14c1/8fd53174c1db49eaa48391e2d1dee3dc [2022-07-22 15:15:06,166 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 15:15:06,167 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 15:15:06,170 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 15:15:06,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 15:15:06,173 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 15:15:06,174 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 03:15:06" (1/1) ... [2022-07-22 15:15:06,175 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8e9f696 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:15:06, skipping insertion in model container [2022-07-22 15:15:06,175 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 03:15:06" (1/1) ... [2022-07-22 15:15:06,181 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 15:15:06,193 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 15:15:06,329 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/loop-acceleration/underapprox_1-2.c[327,340] [2022-07-22 15:15:06,341 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 15:15:06,348 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 15:15:06,357 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/loop-acceleration/underapprox_1-2.c[327,340] [2022-07-22 15:15:06,359 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 15:15:06,370 INFO L208 MainTranslator]: Completed translation [2022-07-22 15:15:06,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:15:06 WrapperNode [2022-07-22 15:15:06,371 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 15:15:06,372 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 15:15:06,372 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 15:15:06,373 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 15:15:06,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:15:06" (1/1) ... [2022-07-22 15:15:06,391 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:15:06" (1/1) ... [2022-07-22 15:15:06,409 INFO L137 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 27 [2022-07-22 15:15:06,409 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 15:15:06,411 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 15:15:06,411 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 15:15:06,411 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 15:15:06,419 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:15:06" (1/1) ... [2022-07-22 15:15:06,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:15:06" (1/1) ... [2022-07-22 15:15:06,431 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:15:06" (1/1) ... [2022-07-22 15:15:06,432 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:15:06" (1/1) ... [2022-07-22 15:15:06,435 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:15:06" (1/1) ... [2022-07-22 15:15:06,443 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:15:06" (1/1) ... [2022-07-22 15:15:06,445 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:15:06" (1/1) ... [2022-07-22 15:15:06,447 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 15:15:06,449 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 15:15:06,450 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 15:15:06,450 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 15:15:06,451 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:15:06" (1/1) ... [2022-07-22 15:15:06,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 15:15:06,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 15:15:06,489 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) [2022-07-22 15:15:06,512 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 [2022-07-22 15:15:06,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 15:15:06,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 15:15:06,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 15:15:06,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 15:15:06,591 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 15:15:06,593 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 15:15:06,714 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 15:15:06,719 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 15:15:06,719 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 15:15:06,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 03:15:06 BoogieIcfgContainer [2022-07-22 15:15:06,721 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 15:15:06,724 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 15:15:06,724 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 15:15:06,727 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 15:15:06,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 03:15:06" (1/3) ... [2022-07-22 15:15:06,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47a83b93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 03:15:06, skipping insertion in model container [2022-07-22 15:15:06,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:15:06" (2/3) ... [2022-07-22 15:15:06,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47a83b93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 03:15:06, skipping insertion in model container [2022-07-22 15:15:06,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 03:15:06" (3/3) ... [2022-07-22 15:15:06,731 INFO L111 eAbstractionObserver]: Analyzing ICFG underapprox_1-2.c [2022-07-22 15:15:06,745 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 15:15:06,745 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 15:15:06,806 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 15:15:06,814 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@486e31e0, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@15fdfb37 [2022-07-22 15:15:06,814 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 15:15:06,821 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 15:15:06,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-22 15:15:06,830 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 15:15:06,831 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-22 15:15:06,832 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 15:15:06,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 15:15:06,839 INFO L85 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2022-07-22 15:15:06,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 15:15:06,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380571742] [2022-07-22 15:15:06,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:15:06,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 15:15:06,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 15:15:07,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 15:15:07,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 15:15:07,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380571742] [2022-07-22 15:15:07,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380571742] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 15:15:07,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 15:15:07,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 15:15:07,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968510970] [2022-07-22 15:15:07,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 15:15:07,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 15:15:07,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 15:15:07,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 15:15:07,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 15:15:07,055 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 15:15:07,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 15:15:07,092 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2022-07-22 15:15:07,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 15:15:07,094 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-07-22 15:15:07,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 15:15:07,100 INFO L225 Difference]: With dead ends: 20 [2022-07-22 15:15:07,101 INFO L226 Difference]: Without dead ends: 8 [2022-07-22 15:15:07,104 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 [2022-07-22 15:15:07,111 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 15:15:07,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 15:15:07,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-07-22 15:15:07,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-07-22 15:15:07,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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) [2022-07-22 15:15:07,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2022-07-22 15:15:07,158 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2022-07-22 15:15:07,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 15:15:07,158 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2022-07-22 15:15:07,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 15:15:07,159 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2022-07-22 15:15:07,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-22 15:15:07,159 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 15:15:07,160 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-22 15:15:07,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 15:15:07,161 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 15:15:07,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 15:15:07,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1810510480, now seen corresponding path program 1 times [2022-07-22 15:15:07,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 15:15:07,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859067307] [2022-07-22 15:15:07,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:15:07,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 15:15:07,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 15:15:07,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 15:15:07,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 15:15:07,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859067307] [2022-07-22 15:15:07,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859067307] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 15:15:07,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589171450] [2022-07-22 15:15:07,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:15:07,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 15:15:07,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 15:15:07,274 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) [2022-07-22 15:15:07,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 15:15:07,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 15:15:07,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-22 15:15:07,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 15:15:07,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 15:15:07,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 15:15:07,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 15:15:07,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589171450] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 15:15:07,377 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 15:15:07,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-07-22 15:15:07,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124463743] [2022-07-22 15:15:07,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 15:15:07,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 15:15:07,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 15:15:07,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 15:15:07,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-07-22 15:15:07,382 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 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) [2022-07-22 15:15:07,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 15:15:07,439 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2022-07-22 15:15:07,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 15:15:07,440 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 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 7 [2022-07-22 15:15:07,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 15:15:07,440 INFO L225 Difference]: With dead ends: 15 [2022-07-22 15:15:07,440 INFO L226 Difference]: Without dead ends: 11 [2022-07-22 15:15:07,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2022-07-22 15:15:07,442 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 15:15:07,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 15:15:07,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-07-22 15:15:07,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-07-22 15:15:07,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 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) [2022-07-22 15:15:07,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2022-07-22 15:15:07,447 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2022-07-22 15:15:07,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 15:15:07,448 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2022-07-22 15:15:07,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 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) [2022-07-22 15:15:07,448 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2022-07-22 15:15:07,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-22 15:15:07,448 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 15:15:07,449 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2022-07-22 15:15:07,475 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-22 15:15:07,665 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 [2022-07-22 15:15:07,665 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 15:15:07,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 15:15:07,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1922847381, now seen corresponding path program 2 times [2022-07-22 15:15:07,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 15:15:07,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737532550] [2022-07-22 15:15:07,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:15:07,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 15:15:07,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 15:15:07,774 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 15:15:07,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 15:15:07,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737532550] [2022-07-22 15:15:07,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737532550] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 15:15:07,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711743377] [2022-07-22 15:15:07,776 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 15:15:07,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 15:15:07,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 15:15:07,778 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) [2022-07-22 15:15:07,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 15:15:07,844 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 15:15:07,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 15:15:07,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-22 15:15:07,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 15:15:07,936 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 15:15:07,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 15:15:12,305 WARN L833 $PredicateComparison]: unable to prove that (not (= 0 (mod (mod (mod |c_ULTIMATE.start_main_~y~0#1| 4294967296) 3) 4294967296))) is different from false [2022-07-22 15:15:18,839 WARN L833 $PredicateComparison]: unable to prove that (not (= (mod (mod (mod (* |c_ULTIMATE.start_main_~y~0#1| 2) 4294967296) 3) 4294967296) 0)) is different from false [2022-07-22 15:15:23,210 WARN L833 $PredicateComparison]: unable to prove that (not (= (mod (mod (mod (* |c_ULTIMATE.start_main_~y~0#1| 4) 4294967296) 3) 4294967296) 0)) is different from false [2022-07-22 15:15:27,575 WARN L833 $PredicateComparison]: unable to prove that (not (= (mod (mod (mod (* |c_ULTIMATE.start_main_~y~0#1| 8) 4294967296) 3) 4294967296) 0)) is different from false [2022-07-22 15:15:31,952 WARN L833 $PredicateComparison]: unable to prove that (not (= (mod (mod (mod (* |c_ULTIMATE.start_main_~y~0#1| 16) 4294967296) 3) 4294967296) 0)) is different from false [2022-07-22 15:15:31,960 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 10 not checked. [2022-07-22 15:15:31,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711743377] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 15:15:31,960 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 15:15:31,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 19 [2022-07-22 15:15:31,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81068900] [2022-07-22 15:15:31,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 15:15:31,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 15:15:31,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 15:15:31,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 15:15:31,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=157, Unknown=5, NotChecked=140, Total=342 [2022-07-22 15:15:31,963 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 19 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 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) [2022-07-22 15:15:38,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 15:15:38,632 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-07-22 15:15:38,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 15:15:38,633 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 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) Word has length 10 [2022-07-22 15:15:38,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 15:15:38,634 INFO L225 Difference]: With dead ends: 16 [2022-07-22 15:15:38,634 INFO L226 Difference]: Without dead ends: 12 [2022-07-22 15:15:38,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 17.6s TimeCoverageRelationStatistics Valid=64, Invalid=293, Unknown=5, NotChecked=190, Total=552 [2022-07-22 15:15:38,636 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 15:15:38,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 73 Invalid, 0 Unknown, 31 Unchecked, 0.1s Time] [2022-07-22 15:15:38,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-07-22 15:15:38,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-07-22 15:15:38,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 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) [2022-07-22 15:15:38,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-07-22 15:15:38,639 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2022-07-22 15:15:38,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 15:15:38,640 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-07-22 15:15:38,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 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) [2022-07-22 15:15:38,640 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-07-22 15:15:38,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-22 15:15:38,640 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 15:15:38,641 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1] [2022-07-22 15:15:38,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 15:15:38,841 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 [2022-07-22 15:15:38,842 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 15:15:38,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 15:15:38,842 INFO L85 PathProgramCache]: Analyzing trace with hash 522938704, now seen corresponding path program 3 times [2022-07-22 15:15:38,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 15:15:38,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806988535] [2022-07-22 15:15:38,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:15:38,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 15:15:38,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 15:15:39,007 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 15:15:39,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 15:15:39,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806988535] [2022-07-22 15:15:39,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806988535] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 15:15:39,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342266408] [2022-07-22 15:15:39,008 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-22 15:15:39,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 15:15:39,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 15:15:39,010 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) [2022-07-22 15:15:39,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 15:15:39,045 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-07-22 15:15:39,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 15:15:39,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-22 15:15:39,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 15:15:39,113 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 15:15:39,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 15:15:39,235 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 15:15:39,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342266408] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 15:15:39,236 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 15:15:39,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-07-22 15:15:39,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062337234] [2022-07-22 15:15:39,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 15:15:39,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-22 15:15:39,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 15:15:39,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-22 15:15:39,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2022-07-22 15:15:39,238 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 15 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 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) [2022-07-22 15:15:39,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 15:15:39,305 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2022-07-22 15:15:39,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 15:15:39,306 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 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) Word has length 11 [2022-07-22 15:15:39,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 15:15:39,306 INFO L225 Difference]: With dead ends: 17 [2022-07-22 15:15:39,306 INFO L226 Difference]: Without dead ends: 13 [2022-07-22 15:15:39,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2022-07-22 15:15:39,308 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 15:15:39,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 15:15:39,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-07-22 15:15:39,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-07-22 15:15:39,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 15:15:39,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-07-22 15:15:39,316 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2022-07-22 15:15:39,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 15:15:39,317 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-07-22 15:15:39,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 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) [2022-07-22 15:15:39,320 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-07-22 15:15:39,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-22 15:15:39,321 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 15:15:39,321 INFO L195 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1] [2022-07-22 15:15:39,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 15:15:39,521 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 [2022-07-22 15:15:39,522 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 15:15:39,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 15:15:39,522 INFO L85 PathProgramCache]: Analyzing trace with hash -967103989, now seen corresponding path program 4 times [2022-07-22 15:15:39,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 15:15:39,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997325830] [2022-07-22 15:15:39,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:15:39,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 15:15:39,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 15:15:39,987 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 15:15:39,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 15:15:39,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997325830] [2022-07-22 15:15:39,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997325830] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 15:15:39,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122455414] [2022-07-22 15:15:39,988 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-22 15:15:39,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 15:15:39,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 15:15:39,992 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) [2022-07-22 15:15:40,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 15:15:40,039 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-22 15:15:40,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 15:15:40,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-22 15:15:40,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 15:15:40,481 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 15:15:40,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 15:15:44,821 WARN L833 $PredicateComparison]: unable to prove that (not (= 0 (mod (mod (mod |c_ULTIMATE.start_main_~y~0#1| 4294967296) 3) 4294967296))) is different from false [2022-07-22 15:15:51,363 WARN L833 $PredicateComparison]: unable to prove that (not (= (mod (mod (mod (* |c_ULTIMATE.start_main_~y~0#1| 2) 4294967296) 3) 4294967296) 0)) is different from false [2022-07-22 15:15:55,722 WARN L833 $PredicateComparison]: unable to prove that (not (= (mod (mod (mod (* |c_ULTIMATE.start_main_~y~0#1| 4) 4294967296) 3) 4294967296) 0)) is different from false [2022-07-22 15:16:00,056 WARN L833 $PredicateComparison]: unable to prove that (not (= (mod (mod (mod (* |c_ULTIMATE.start_main_~y~0#1| 8) 4294967296) 3) 4294967296) 0)) is different from false [2022-07-22 15:16:04,402 WARN L833 $PredicateComparison]: unable to prove that (not (= (mod (mod (mod (* |c_ULTIMATE.start_main_~y~0#1| 16) 4294967296) 3) 4294967296) 0)) is different from false [2022-07-22 15:16:08,747 WARN L833 $PredicateComparison]: unable to prove that (not (= (mod (mod (mod (* |c_ULTIMATE.start_main_~y~0#1| 32) 4294967296) 3) 4294967296) 0)) is different from false [2022-07-22 15:16:13,110 WARN L833 $PredicateComparison]: unable to prove that (not (= (mod (mod (mod (* |c_ULTIMATE.start_main_~y~0#1| 64) 4294967296) 3) 4294967296) 0)) is different from false [2022-07-22 15:16:13,117 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 21 not checked. [2022-07-22 15:16:13,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122455414] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 15:16:13,118 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 15:16:13,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 24 [2022-07-22 15:16:13,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162541644] [2022-07-22 15:16:13,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 15:16:13,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-22 15:16:13,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 15:16:13,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-22 15:16:13,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=234, Unknown=7, NotChecked=252, Total=552 [2022-07-22 15:16:13,120 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 24 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 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) [2022-07-22 15:16:13,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 15:16:13,416 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2022-07-22 15:16:13,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 15:16:13,417 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-07-22 15:16:13,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 15:16:13,418 INFO L225 Difference]: With dead ends: 21 [2022-07-22 15:16:13,418 INFO L226 Difference]: Without dead ends: 15 [2022-07-22 15:16:13,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 9 SyntacticMatches, 8 SemanticMatches, 24 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 16.1s TimeCoverageRelationStatistics Valid=70, Invalid=293, Unknown=7, NotChecked=280, Total=650 [2022-07-22 15:16:13,419 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 3 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 72 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 15:16:13,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 70 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 84 Invalid, 0 Unknown, 72 Unchecked, 0.1s Time] [2022-07-22 15:16:13,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-07-22 15:16:13,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-07-22 15:16:13,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 15:16:13,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-07-22 15:16:13,423 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2022-07-22 15:16:13,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 15:16:13,426 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-07-22 15:16:13,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 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) [2022-07-22 15:16:13,428 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-07-22 15:16:13,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-22 15:16:13,429 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 15:16:13,429 INFO L195 NwaCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1] [2022-07-22 15:16:13,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 15:16:13,629 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 [2022-07-22 15:16:13,630 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 15:16:13,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 15:16:13,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1620705621, now seen corresponding path program 5 times [2022-07-22 15:16:13,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 15:16:13,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982755451] [2022-07-22 15:16:13,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:16:13,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 15:16:13,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 15:16:13,765 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 15:16:13,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 15:16:13,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982755451] [2022-07-22 15:16:13,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982755451] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 15:16:13,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290240162] [2022-07-22 15:16:13,766 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-22 15:16:13,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 15:16:13,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 15:16:13,768 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) [2022-07-22 15:16:13,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 15:16:13,863 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-07-22 15:16:13,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 15:16:13,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-22 15:16:13,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 15:16:14,165 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 25 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 15:16:14,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 15:16:14,549 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 25 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 15:16:14,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290240162] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 15:16:14,550 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 15:16:14,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2022-07-22 15:16:14,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70310032] [2022-07-22 15:16:14,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 15:16:14,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-22 15:16:14,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 15:16:14,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-22 15:16:14,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2022-07-22 15:16:14,553 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 23 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 23 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 15:16:14,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 15:16:14,676 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2022-07-22 15:16:14,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 15:16:14,676 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 23 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-07-22 15:16:14,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 15:16:14,676 INFO L225 Difference]: With dead ends: 15 [2022-07-22 15:16:14,677 INFO L226 Difference]: Without dead ends: 0 [2022-07-22 15:16:14,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=152, Invalid=400, Unknown=0, NotChecked=0, Total=552 [2022-07-22 15:16:14,678 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 15:16:14,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 15:16:14,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-22 15:16:14,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-22 15:16:14,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 15:16:14,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-22 15:16:14,679 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2022-07-22 15:16:14,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 15:16:14,679 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-22 15:16:14,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 23 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 15:16:14,679 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-22 15:16:14,679 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-22 15:16:14,682 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-22 15:16:14,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 15:16:14,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 15:16:14,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-22 15:16:15,006 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-22 15:16:15,007 INFO L899 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2022-07-22 15:16:15,007 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-22 15:16:15,007 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-22 15:16:15,007 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-22 15:16:15,007 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2022-07-22 15:16:15,007 INFO L895 garLoopResultBuilder]: At program point L16-2(lines 16 19) the Hoare annotation is: (or (and (= 2 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~x~0#1| 1)) (and (<= 6 |ULTIMATE.start_main_~x~0#1|) (<= (div |ULTIMATE.start_main_~x~0#1| 4294967296) 0) (< (mod (+ 4294967295 |ULTIMATE.start_main_~x~0#1|) 4294967296) 6) (= 64 |ULTIMATE.start_main_~y~0#1|)) (and (<= 5 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 5) (= 32 |ULTIMATE.start_main_~y~0#1|)) (and (<= |ULTIMATE.start_main_~x~0#1| 3) (= |ULTIMATE.start_main_~y~0#1| 8) (<= 3 |ULTIMATE.start_main_~x~0#1|)) (and (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~x~0#1| 0)) (and (<= 2 |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~y~0#1| 4) (<= |ULTIMATE.start_main_~x~0#1| 2)) (and (= 16 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 4) (<= 4 |ULTIMATE.start_main_~x~0#1|))) [2022-07-22 15:16:15,008 INFO L899 garLoopResultBuilder]: For program point L16-3(lines 16 19) no Hoare annotation was computed. [2022-07-22 15:16:15,008 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 22) no Hoare annotation was computed. [2022-07-22 15:16:15,008 INFO L899 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2022-07-22 15:16:15,008 INFO L902 garLoopResultBuilder]: At program point L6-2(lines 5 10) the Hoare annotation is: true [2022-07-22 15:16:15,011 INFO L356 BasicCegarLoop]: Path program histogram: [5, 1] [2022-07-22 15:16:15,013 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-22 15:16:15,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 03:16:15 BoogieIcfgContainer [2022-07-22 15:16:15,025 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-22 15:16:15,025 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 15:16:15,025 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 15:16:15,026 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 15:16:15,026 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 03:15:06" (3/4) ... [2022-07-22 15:16:15,028 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-22 15:16:15,036 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2022-07-22 15:16:15,036 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-22 15:16:15,036 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-22 15:16:15,036 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-22 15:16:15,062 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-22 15:16:15,062 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 15:16:15,063 INFO L158 Benchmark]: Toolchain (without parser) took 68895.35ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 60.1MB in the beginning and 76.0MB in the end (delta: -15.9MB). Peak memory consumption was 2.3MB. Max. memory is 16.1GB. [2022-07-22 15:16:15,063 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 94.4MB. Free memory was 65.5MB in the beginning and 65.4MB in the end (delta: 26.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 15:16:15,063 INFO L158 Benchmark]: CACSL2BoogieTranslator took 201.23ms. Allocated memory is still 94.4MB. Free memory was 59.8MB in the beginning and 71.2MB in the end (delta: -11.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-22 15:16:15,064 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.41ms. Allocated memory is still 94.4MB. Free memory was 70.8MB in the beginning and 69.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 15:16:15,064 INFO L158 Benchmark]: Boogie Preprocessor took 37.63ms. Allocated memory is still 94.4MB. Free memory was 69.5MB in the beginning and 68.6MB in the end (delta: 881.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 15:16:15,064 INFO L158 Benchmark]: RCFGBuilder took 272.01ms. Allocated memory is still 94.4MB. Free memory was 68.6MB in the beginning and 60.0MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-22 15:16:15,065 INFO L158 Benchmark]: TraceAbstraction took 68301.16ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 59.4MB in the beginning and 78.1MB in the end (delta: -18.7MB). Peak memory consumption was 922.7kB. Max. memory is 16.1GB. [2022-07-22 15:16:15,065 INFO L158 Benchmark]: Witness Printer took 36.85ms. Allocated memory is still 113.2MB. Free memory was 78.1MB in the beginning and 76.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 15:16:15,068 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 94.4MB. Free memory was 65.5MB in the beginning and 65.4MB in the end (delta: 26.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 201.23ms. Allocated memory is still 94.4MB. Free memory was 59.8MB in the beginning and 71.2MB in the end (delta: -11.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.41ms. Allocated memory is still 94.4MB. Free memory was 70.8MB in the beginning and 69.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.63ms. Allocated memory is still 94.4MB. Free memory was 69.5MB in the beginning and 68.6MB in the end (delta: 881.6kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 272.01ms. Allocated memory is still 94.4MB. Free memory was 68.6MB in the beginning and 60.0MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 68301.16ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 59.4MB in the beginning and 78.1MB in the end (delta: -18.7MB). Peak memory consumption was 922.7kB. Max. memory is 16.1GB. * Witness Printer took 36.85ms. Allocated memory is still 113.2MB. Free memory was 78.1MB in the beginning and 76.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 7]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 68.2s, OverallIterations: 6, TraceHistogramMax: 8, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 7.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3 mSDsluCounter, 214 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 103 IncrementalHoareTripleChecker+Unchecked, 179 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 286 IncrementalHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 35 mSDtfsCounter, 286 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 155 GetRequests, 58 SyntacticMatches, 9 SemanticMatches, 88 ConstructedPredicates, 12 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 34.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=5, InterpolantAutomatonStates: 45, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 10 NumberOfFragments, 75 HoareAnnotationTreeSize, 2 FomulaSimplifications, 11 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 25 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 59.0s InterpolantComputationTime, 114 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 152 ConstructedInterpolants, 0 QuantifiedInterpolants, 853 SizeOfPredicates, 7 NumberOfNonLiveVariables, 270 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 16 InterpolantComputations, 1 PerfectInterpolantSequences, 65/249 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: ((((((2 == y && x == 1) || (((6 <= x && x / 4294967296 <= 0) && (4294967295 + x) % 4294967296 < 6) && 64 == y)) || ((5 <= x && x <= 5) && 32 == y)) || ((x <= 3 && y == 8) && 3 <= x)) || (y == 1 && x == 0)) || ((2 <= x && y == 4) && x <= 2)) || ((16 == y && x <= 4) && 4 <= x) RESULT: Ultimate proved your program to be correct! [2022-07-22 15:16:15,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE