./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 26d01a9c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound100.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 7cdbf1a1c8f20bea42ab4ad35fbada62352deeb8460cfeb3778e870071fb234e --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-18 01:21:40,229 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 01:21:40,242 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 01:21:40,273 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 01:21:40,273 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 01:21:40,276 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 01:21:40,278 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 01:21:40,279 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 01:21:40,281 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 01:21:40,285 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 01:21:40,286 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 01:21:40,287 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 01:21:40,288 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 01:21:40,289 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 01:21:40,290 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 01:21:40,291 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 01:21:40,291 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 01:21:40,292 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 01:21:40,294 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 01:21:40,296 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 01:21:40,298 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 01:21:40,298 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 01:21:40,299 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 01:21:40,299 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 01:21:40,302 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 01:21:40,302 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 01:21:40,302 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 01:21:40,302 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 01:21:40,303 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 01:21:40,303 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 01:21:40,303 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 01:21:40,303 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 01:21:40,304 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 01:21:40,304 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 01:21:40,305 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 01:21:40,305 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 01:21:40,305 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 01:21:40,305 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 01:21:40,306 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 01:21:40,306 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 01:21:40,306 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 01:21:40,313 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-18 01:21:40,333 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 01:21:40,333 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 01:21:40,334 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 01:21:40,334 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 01:21:40,334 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 01:21:40,334 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 01:21:40,335 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 01:21:40,335 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 01:21:40,335 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 01:21:40,335 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 01:21:40,336 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 01:21:40,336 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 01:21:40,336 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 01:21:40,336 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 01:21:40,336 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 01:21:40,336 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 01:21:40,336 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 01:21:40,337 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 01:21:40,337 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 01:21:40,337 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 01:21:40,337 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 01:21:40,337 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 01:21:40,337 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 01:21:40,337 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 01:21:40,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 01:21:40,337 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 01:21:40,338 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 01:21:40,338 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 01:21:40,338 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 01:21:40,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 01:21:40,338 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 01:21:40,338 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 01:21:40,338 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 01:21:40,338 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 01:21:40,338 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 01:21:40,338 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7cdbf1a1c8f20bea42ab4ad35fbada62352deeb8460cfeb3778e870071fb234e [2023-02-18 01:21:40,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 01:21:40,514 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 01:21:40,515 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 01:21:40,516 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 01:21:40,516 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 01:21:40,517 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound100.c [2023-02-18 01:21:41,492 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 01:21:41,629 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 01:21:41,631 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound100.c [2023-02-18 01:21:41,635 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a82c27e6d/29fd2b95089348f789c70479acaba1c4/FLAGa5f911137 [2023-02-18 01:21:41,643 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a82c27e6d/29fd2b95089348f789c70479acaba1c4 [2023-02-18 01:21:41,645 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 01:21:41,646 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 01:21:41,647 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 01:21:41,647 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 01:21:41,650 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 01:21:41,650 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 01:21:41" (1/1) ... [2023-02-18 01:21:41,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47d01ad7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:21:41, skipping insertion in model container [2023-02-18 01:21:41,653 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 01:21:41" (1/1) ... [2023-02-18 01:21:41,657 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 01:21:41,668 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 01:21:41,791 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound100.c[576,589] [2023-02-18 01:21:41,810 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 01:21:41,819 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 01:21:41,828 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound100.c[576,589] [2023-02-18 01:21:41,841 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 01:21:41,851 INFO L208 MainTranslator]: Completed translation [2023-02-18 01:21:41,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:21:41 WrapperNode [2023-02-18 01:21:41,852 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 01:21:41,853 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 01:21:41,853 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 01:21:41,853 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 01:21:41,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:21:41" (1/1) ... [2023-02-18 01:21:41,862 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:21:41" (1/1) ... [2023-02-18 01:21:41,876 INFO L138 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 66 [2023-02-18 01:21:41,876 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 01:21:41,877 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 01:21:41,877 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 01:21:41,877 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 01:21:41,883 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:21:41" (1/1) ... [2023-02-18 01:21:41,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:21:41" (1/1) ... [2023-02-18 01:21:41,897 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:21:41" (1/1) ... [2023-02-18 01:21:41,897 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:21:41" (1/1) ... [2023-02-18 01:21:41,899 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:21:41" (1/1) ... [2023-02-18 01:21:41,905 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:21:41" (1/1) ... [2023-02-18 01:21:41,905 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:21:41" (1/1) ... [2023-02-18 01:21:41,906 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:21:41" (1/1) ... [2023-02-18 01:21:41,907 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 01:21:41,910 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 01:21:41,910 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 01:21:41,910 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 01:21:41,911 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:21:41" (1/1) ... [2023-02-18 01:21:41,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 01:21:41,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 01:21:41,938 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-18 01:21:41,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-18 01:21:41,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 01:21:41,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-18 01:21:41,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 01:21:41,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 01:21:41,979 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-18 01:21:41,979 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-18 01:21:42,023 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 01:21:42,025 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 01:21:42,147 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 01:21:42,151 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 01:21:42,151 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-18 01:21:42,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 01:21:42 BoogieIcfgContainer [2023-02-18 01:21:42,153 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 01:21:42,154 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 01:21:42,154 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 01:21:42,156 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 01:21:42,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 01:21:41" (1/3) ... [2023-02-18 01:21:42,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20f71ae3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 01:21:42, skipping insertion in model container [2023-02-18 01:21:42,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:21:41" (2/3) ... [2023-02-18 01:21:42,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20f71ae3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 01:21:42, skipping insertion in model container [2023-02-18 01:21:42,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 01:21:42" (3/3) ... [2023-02-18 01:21:42,174 INFO L112 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_unwindbound100.c [2023-02-18 01:21:42,185 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 01:21:42,186 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-18 01:21:42,223 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 01:21:42,227 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1c83787f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 01:21:42,232 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-18 01:21:42,236 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-18 01:21:42,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-18 01:21:42,241 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 01:21:42,241 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 01:21:42,241 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 01:21:42,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 01:21:42,245 INFO L85 PathProgramCache]: Analyzing trace with hash -555122024, now seen corresponding path program 1 times [2023-02-18 01:21:42,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 01:21:42,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466174164] [2023-02-18 01:21:42,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:21:42,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 01:21:42,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 01:21:42,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 01:21:42,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466174164] [2023-02-18 01:21:42,364 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-18 01:21:42,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513681657] [2023-02-18 01:21:42,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:21:42,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 01:21:42,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 01:21:42,367 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 01:21:42,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-18 01:21:42,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 01:21:42,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-18 01:21:42,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 01:21:42,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 01:21:42,463 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 01:21:42,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513681657] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 01:21:42,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 01:21:42,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 01:21:42,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934186527] [2023-02-18 01:21:42,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 01:21:42,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-18 01:21:42,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 01:21:42,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-18 01:21:42,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 01:21:42,502 INFO L87 Difference]: Start difference. First operand has 29 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 01:21:42,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 01:21:42,525 INFO L93 Difference]: Finished difference Result 55 states and 87 transitions. [2023-02-18 01:21:42,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-18 01:21:42,527 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-18 01:21:42,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 01:21:42,532 INFO L225 Difference]: With dead ends: 55 [2023-02-18 01:21:42,532 INFO L226 Difference]: Without dead ends: 25 [2023-02-18 01:21:42,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 01:21:42,541 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 01:21:42,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 01:21:42,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-02-18 01:21:42,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-02-18 01:21:42,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.3125) internal successors, (21), 17 states have internal predecessors, (21), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-18 01:21:42,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2023-02-18 01:21:42,573 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 9 [2023-02-18 01:21:42,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 01:21:42,574 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2023-02-18 01:21:42,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 01:21:42,574 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2023-02-18 01:21:42,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-18 01:21:42,579 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 01:21:42,579 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 01:21:42,584 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-18 01:21:42,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-02-18 01:21:42,787 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 01:21:42,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 01:21:42,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1985514477, now seen corresponding path program 1 times [2023-02-18 01:21:42,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 01:21:42,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920605393] [2023-02-18 01:21:42,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:21:42,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 01:21:42,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 01:21:42,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 01:21:42,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920605393] [2023-02-18 01:21:42,819 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-18 01:21:42,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550393246] [2023-02-18 01:21:42,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:21:42,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 01:21:42,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 01:21:42,821 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 01:21:42,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-18 01:21:42,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 01:21:42,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-18 01:21:42,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 01:21:42,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 01:21:42,882 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 01:21:42,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550393246] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 01:21:42,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 01:21:42,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 01:21:42,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225855929] [2023-02-18 01:21:42,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 01:21:42,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 01:21:42,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 01:21:42,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 01:21:42,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 01:21:42,884 INFO L87 Difference]: Start difference. First operand 25 states and 34 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 01:21:42,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 01:21:42,897 INFO L93 Difference]: Finished difference Result 34 states and 43 transitions. [2023-02-18 01:21:42,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 01:21:42,898 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-18 01:21:42,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 01:21:42,898 INFO L225 Difference]: With dead ends: 34 [2023-02-18 01:21:42,899 INFO L226 Difference]: Without dead ends: 27 [2023-02-18 01:21:42,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 01:21:42,900 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 01:21:42,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 89 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 01:21:42,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-02-18 01:21:42,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-02-18 01:21:42,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 19 states have internal predecessors, (23), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-18 01:21:42,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2023-02-18 01:21:42,905 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 10 [2023-02-18 01:21:42,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 01:21:42,905 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2023-02-18 01:21:42,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 01:21:42,905 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2023-02-18 01:21:42,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-18 01:21:42,906 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 01:21:42,906 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 01:21:42,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-18 01:21:43,113 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,SelfDestructingSolverStorable1 [2023-02-18 01:21:43,114 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 01:21:43,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 01:21:43,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1984024927, now seen corresponding path program 1 times [2023-02-18 01:21:43,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 01:21:43,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711765397] [2023-02-18 01:21:43,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:21:43,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 01:21:43,123 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 01:21:43,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1579263145] [2023-02-18 01:21:43,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:21:43,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 01:21:43,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 01:21:43,127 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 01:21:43,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-18 01:21:43,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 01:21:43,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-18 01:21:43,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 01:21:43,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 01:21:43,189 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 01:21:43,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 01:21:43,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711765397] [2023-02-18 01:21:43,189 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 01:21:43,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579263145] [2023-02-18 01:21:43,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579263145] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 01:21:43,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 01:21:43,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 01:21:43,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802852883] [2023-02-18 01:21:43,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 01:21:43,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 01:21:43,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 01:21:43,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 01:21:43,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 01:21:43,192 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 01:21:43,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 01:21:43,234 INFO L93 Difference]: Finished difference Result 37 states and 48 transitions. [2023-02-18 01:21:43,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 01:21:43,234 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-18 01:21:43,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 01:21:43,235 INFO L225 Difference]: With dead ends: 37 [2023-02-18 01:21:43,235 INFO L226 Difference]: Without dead ends: 35 [2023-02-18 01:21:43,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-18 01:21:43,238 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 6 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 01:21:43,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 113 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 01:21:43,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-02-18 01:21:43,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2023-02-18 01:21:43,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 23 states have internal predecessors, (26), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-18 01:21:43,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2023-02-18 01:21:43,244 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 10 [2023-02-18 01:21:43,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 01:21:43,244 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2023-02-18 01:21:43,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 01:21:43,244 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2023-02-18 01:21:43,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-18 01:21:43,245 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 01:21:43,245 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 01:21:43,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-18 01:21:43,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 01:21:43,446 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 01:21:43,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 01:21:43,446 INFO L85 PathProgramCache]: Analyzing trace with hash -2084809189, now seen corresponding path program 1 times [2023-02-18 01:21:43,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 01:21:43,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492998389] [2023-02-18 01:21:43,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:21:43,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 01:21:43,453 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 01:21:43,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [175050665] [2023-02-18 01:21:43,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:21:43,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 01:21:43,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 01:21:43,456 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 01:21:43,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-18 01:21:43,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 01:21:43,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-18 01:21:43,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 01:21:43,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 01:21:43,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 01:21:43,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 01:21:43,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 01:21:43,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492998389] [2023-02-18 01:21:43,621 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 01:21:43,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175050665] [2023-02-18 01:21:43,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175050665] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-18 01:21:43,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-18 01:21:43,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 9 [2023-02-18 01:21:43,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76593429] [2023-02-18 01:21:43,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 01:21:43,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 01:21:43,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 01:21:43,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 01:21:43,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-02-18 01:21:43,623 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 01:21:43,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 01:21:43,673 INFO L93 Difference]: Finished difference Result 50 states and 66 transitions. [2023-02-18 01:21:43,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 01:21:43,673 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-02-18 01:21:43,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 01:21:43,674 INFO L225 Difference]: With dead ends: 50 [2023-02-18 01:21:43,674 INFO L226 Difference]: Without dead ends: 47 [2023-02-18 01:21:43,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-02-18 01:21:43,675 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 12 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 01:21:43,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 127 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 01:21:43,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-02-18 01:21:43,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2023-02-18 01:21:43,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 30 states have internal predecessors, (36), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-18 01:21:43,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 61 transitions. [2023-02-18 01:21:43,683 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 61 transitions. Word has length 15 [2023-02-18 01:21:43,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 01:21:43,684 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 61 transitions. [2023-02-18 01:21:43,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 01:21:43,684 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 61 transitions. [2023-02-18 01:21:43,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-18 01:21:43,684 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 01:21:43,685 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 01:21:43,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-18 01:21:43,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 01:21:43,889 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 01:21:43,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 01:21:43,890 INFO L85 PathProgramCache]: Analyzing trace with hash -2002825724, now seen corresponding path program 1 times [2023-02-18 01:21:43,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 01:21:43,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930518147] [2023-02-18 01:21:43,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:21:43,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 01:21:43,897 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 01:21:43,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1427124263] [2023-02-18 01:21:43,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:21:43,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 01:21:43,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 01:21:43,898 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 01:21:43,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-18 01:21:43,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 01:21:43,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-18 01:21:43,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 01:21:43,970 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 01:21:43,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 01:21:43,994 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-18 01:21:43,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 01:21:43,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930518147] [2023-02-18 01:21:43,995 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 01:21:43,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427124263] [2023-02-18 01:21:43,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427124263] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-18 01:21:43,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-18 01:21:43,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2023-02-18 01:21:43,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906181238] [2023-02-18 01:21:43,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 01:21:43,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 01:21:43,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 01:21:43,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 01:21:43,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-02-18 01:21:43,997 INFO L87 Difference]: Start difference. First operand 46 states and 61 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-18 01:21:44,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 01:21:44,033 INFO L93 Difference]: Finished difference Result 52 states and 66 transitions. [2023-02-18 01:21:44,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 01:21:44,034 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2023-02-18 01:21:44,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 01:21:44,035 INFO L225 Difference]: With dead ends: 52 [2023-02-18 01:21:44,035 INFO L226 Difference]: Without dead ends: 50 [2023-02-18 01:21:44,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-02-18 01:21:44,036 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 14 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 01:21:44,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 64 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 01:21:44,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-02-18 01:21:44,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-02-18 01:21:44,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 32 states have (on average 1.21875) internal successors, (39), 33 states have internal predecessors, (39), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-18 01:21:44,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 64 transitions. [2023-02-18 01:21:44,052 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 64 transitions. Word has length 23 [2023-02-18 01:21:44,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 01:21:44,053 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 64 transitions. [2023-02-18 01:21:44,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-18 01:21:44,054 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 64 transitions. [2023-02-18 01:21:44,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-18 01:21:44,055 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 01:21:44,055 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 01:21:44,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-18 01:21:44,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 01:21:44,269 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 01:21:44,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 01:21:44,270 INFO L85 PathProgramCache]: Analyzing trace with hash -840648207, now seen corresponding path program 1 times [2023-02-18 01:21:44,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 01:21:44,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477206401] [2023-02-18 01:21:44,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:21:44,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 01:21:44,283 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 01:21:44,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [65135666] [2023-02-18 01:21:44,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:21:44,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 01:21:44,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 01:21:44,286 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 01:21:44,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-18 01:21:44,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 01:21:44,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-18 01:21:44,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 01:21:44,329 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-18 01:21:44,330 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 01:21:44,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 01:21:44,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477206401] [2023-02-18 01:21:44,330 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 01:21:44,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65135666] [2023-02-18 01:21:44,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65135666] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 01:21:44,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 01:21:44,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 01:21:44,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422002491] [2023-02-18 01:21:44,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 01:21:44,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 01:21:44,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 01:21:44,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 01:21:44,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-18 01:21:44,332 INFO L87 Difference]: Start difference. First operand 50 states and 64 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-18 01:21:44,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 01:21:44,350 INFO L93 Difference]: Finished difference Result 81 states and 103 transitions. [2023-02-18 01:21:44,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 01:21:44,350 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2023-02-18 01:21:44,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 01:21:44,351 INFO L225 Difference]: With dead ends: 81 [2023-02-18 01:21:44,351 INFO L226 Difference]: Without dead ends: 56 [2023-02-18 01:21:44,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-18 01:21:44,352 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 01:21:44,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 116 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 01:21:44,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-02-18 01:21:44,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-02-18 01:21:44,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 38 states have internal predecessors, (44), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-18 01:21:44,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2023-02-18 01:21:44,373 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 26 [2023-02-18 01:21:44,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 01:21:44,374 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2023-02-18 01:21:44,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-18 01:21:44,374 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2023-02-18 01:21:44,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-18 01:21:44,374 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 01:21:44,374 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 01:21:44,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-18 01:21:44,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 01:21:44,575 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 01:21:44,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 01:21:44,575 INFO L85 PathProgramCache]: Analyzing trace with hash 2012484164, now seen corresponding path program 1 times [2023-02-18 01:21:44,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 01:21:44,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610664043] [2023-02-18 01:21:44,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:21:44,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 01:21:44,582 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 01:21:44,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [626684110] [2023-02-18 01:21:44,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:21:44,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 01:21:44,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 01:21:44,590 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 01:21:44,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-18 01:21:44,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 01:21:44,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-18 01:21:44,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 01:21:44,651 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-18 01:21:44,652 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 01:21:44,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 01:21:44,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610664043] [2023-02-18 01:21:44,652 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 01:21:44,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626684110] [2023-02-18 01:21:44,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626684110] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 01:21:44,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 01:21:44,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-18 01:21:44,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734885053] [2023-02-18 01:21:44,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 01:21:44,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-18 01:21:44,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 01:21:44,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-18 01:21:44,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-18 01:21:44,653 INFO L87 Difference]: Start difference. First operand 56 states and 69 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-18 01:21:44,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 01:21:44,719 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2023-02-18 01:21:44,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 01:21:44,720 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33 [2023-02-18 01:21:44,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 01:21:44,722 INFO L225 Difference]: With dead ends: 62 [2023-02-18 01:21:44,722 INFO L226 Difference]: Without dead ends: 60 [2023-02-18 01:21:44,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-02-18 01:21:44,724 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 33 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 01:21:44,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 90 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 01:21:44,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-02-18 01:21:44,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2023-02-18 01:21:44,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 40 states have (on average 1.175) internal successors, (47), 41 states have internal predecessors, (47), 13 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-18 01:21:44,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2023-02-18 01:21:44,745 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 33 [2023-02-18 01:21:44,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 01:21:44,745 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2023-02-18 01:21:44,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-18 01:21:44,745 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2023-02-18 01:21:44,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-02-18 01:21:44,747 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 01:21:44,748 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 01:21:44,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-18 01:21:44,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 01:21:44,951 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 01:21:44,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 01:21:44,952 INFO L85 PathProgramCache]: Analyzing trace with hash -2020901362, now seen corresponding path program 1 times [2023-02-18 01:21:44,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 01:21:44,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126069495] [2023-02-18 01:21:44,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:21:44,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 01:21:44,959 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 01:21:44,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [356996449] [2023-02-18 01:21:44,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:21:44,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 01:21:44,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 01:21:44,960 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 01:21:44,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-18 01:21:44,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 01:21:44,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-18 01:21:44,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 01:21:45,040 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 23 proven. 5 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-02-18 01:21:45,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 01:21:45,162 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 23 proven. 5 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-02-18 01:21:45,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 01:21:45,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126069495] [2023-02-18 01:21:45,162 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 01:21:45,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356996449] [2023-02-18 01:21:45,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356996449] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 01:21:45,163 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 01:21:45,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2023-02-18 01:21:45,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997377740] [2023-02-18 01:21:45,163 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 01:21:45,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-18 01:21:45,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 01:21:45,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-18 01:21:45,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-02-18 01:21:45,165 INFO L87 Difference]: Start difference. First operand 60 states and 72 transitions. Second operand has 14 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2023-02-18 01:21:45,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 01:21:45,321 INFO L93 Difference]: Finished difference Result 79 states and 96 transitions. [2023-02-18 01:21:45,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-18 01:21:45,321 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 39 [2023-02-18 01:21:45,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 01:21:45,323 INFO L225 Difference]: With dead ends: 79 [2023-02-18 01:21:45,323 INFO L226 Difference]: Without dead ends: 77 [2023-02-18 01:21:45,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2023-02-18 01:21:45,324 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 33 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 01:21:45,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 110 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 01:21:45,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-02-18 01:21:45,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 64. [2023-02-18 01:21:45,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 44 states have internal predecessors, (50), 13 states have call successors, (13), 7 states have call predecessors, (13), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-18 01:21:45,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 75 transitions. [2023-02-18 01:21:45,330 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 75 transitions. Word has length 39 [2023-02-18 01:21:45,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 01:21:45,330 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 75 transitions. [2023-02-18 01:21:45,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2023-02-18 01:21:45,331 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 75 transitions. [2023-02-18 01:21:45,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-02-18 01:21:45,331 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 01:21:45,331 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 01:21:45,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-18 01:21:45,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-02-18 01:21:45,532 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 01:21:45,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 01:21:45,532 INFO L85 PathProgramCache]: Analyzing trace with hash 803844641, now seen corresponding path program 1 times [2023-02-18 01:21:45,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 01:21:45,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412515530] [2023-02-18 01:21:45,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:21:45,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 01:21:45,538 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 01:21:45,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1622294420] [2023-02-18 01:21:45,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:21:45,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 01:21:45,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 01:21:45,540 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 01:21:45,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-18 01:21:45,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 01:21:45,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-18 01:21:45,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 01:21:45,603 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-18 01:21:45,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 01:21:45,625 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-02-18 01:21:45,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 01:21:45,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412515530] [2023-02-18 01:21:45,626 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 01:21:45,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622294420] [2023-02-18 01:21:45,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622294420] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 01:21:45,626 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 01:21:45,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2023-02-18 01:21:45,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000236904] [2023-02-18 01:21:45,628 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 01:21:45,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-18 01:21:45,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 01:21:45,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-18 01:21:45,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-02-18 01:21:45,630 INFO L87 Difference]: Start difference. First operand 64 states and 75 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 5 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-02-18 01:21:45,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 01:21:45,744 INFO L93 Difference]: Finished difference Result 225 states and 264 transitions. [2023-02-18 01:21:45,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-18 01:21:45,744 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 5 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 42 [2023-02-18 01:21:45,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 01:21:45,745 INFO L225 Difference]: With dead ends: 225 [2023-02-18 01:21:45,746 INFO L226 Difference]: Without dead ends: 218 [2023-02-18 01:21:45,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2023-02-18 01:21:45,746 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 86 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 01:21:45,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 202 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 01:21:45,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2023-02-18 01:21:45,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 202. [2023-02-18 01:21:45,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 132 states have (on average 1.1818181818181819) internal successors, (156), 136 states have internal predecessors, (156), 44 states have call successors, (44), 25 states have call predecessors, (44), 25 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-02-18 01:21:45,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 240 transitions. [2023-02-18 01:21:45,774 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 240 transitions. Word has length 42 [2023-02-18 01:21:45,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 01:21:45,774 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 240 transitions. [2023-02-18 01:21:45,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 5 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-02-18 01:21:45,774 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 240 transitions. [2023-02-18 01:21:45,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-02-18 01:21:45,775 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 01:21:45,775 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 01:21:45,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-18 01:21:45,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 01:21:45,979 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 01:21:45,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 01:21:45,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1528082637, now seen corresponding path program 1 times [2023-02-18 01:21:45,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 01:21:45,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47079028] [2023-02-18 01:21:45,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:21:45,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 01:21:45,986 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 01:21:45,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1904461281] [2023-02-18 01:21:45,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:21:45,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 01:21:45,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 01:21:45,988 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 01:21:45,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-18 01:21:46,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 01:21:46,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-18 01:21:46,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 01:21:46,065 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-02-18 01:21:46,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 01:21:46,155 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-02-18 01:21:46,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 01:21:46,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47079028] [2023-02-18 01:21:46,155 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 01:21:46,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904461281] [2023-02-18 01:21:46,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904461281] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-18 01:21:46,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-18 01:21:46,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2023-02-18 01:21:46,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992262583] [2023-02-18 01:21:46,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 01:21:46,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-18 01:21:46,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 01:21:46,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-18 01:21:46,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2023-02-18 01:21:46,157 INFO L87 Difference]: Start difference. First operand 202 states and 240 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-02-18 01:21:46,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 01:21:46,270 INFO L93 Difference]: Finished difference Result 202 states and 240 transitions. [2023-02-18 01:21:46,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 01:21:46,270 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 47 [2023-02-18 01:21:46,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 01:21:46,271 INFO L225 Difference]: With dead ends: 202 [2023-02-18 01:21:46,271 INFO L226 Difference]: Without dead ends: 0 [2023-02-18 01:21:46,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2023-02-18 01:21:46,272 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 23 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 01:21:46,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 58 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 01:21:46,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-18 01:21:46,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-18 01:21:46,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 01:21:46,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-18 01:21:46,273 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 47 [2023-02-18 01:21:46,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 01:21:46,273 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-18 01:21:46,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-02-18 01:21:46,273 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-18 01:21:46,273 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-18 01:21:46,275 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-18 01:21:46,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-18 01:21:46,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-02-18 01:21:46,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-18 01:21:46,491 INFO L895 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (let ((.cse8 (>= |ULTIMATE.start_main_~y~0#1| 1))) (let ((.cse6 (>= |ULTIMATE.start_main_~r~0#1| 0)) (.cse7 (= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~b~0#1|)) (.cse11 (<= 1 |ULTIMATE.start_main_~r~0#1|)) (.cse12 (or (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) .cse8) (and (not .cse8) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0))))) (let ((.cse5 (< ~counter~0 99)) (.cse4 (or (and .cse6 .cse7 .cse8 .cse11 .cse12) (and .cse7 .cse8 .cse11 .cse12))) (.cse0 (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|))))) (.cse3 (< ~counter~0 100)) (.cse1 (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|)))) (.cse2 (let ((.cse9 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse10 (= |ULTIMATE.start_main_~q~0#1| 0))) (or (and .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12) (and .cse7 .cse8 .cse9 .cse10 .cse11 .cse12))))) (or (and (<= (+ ~counter~0 (- 1)) 1) .cse0 .cse1 .cse2) (and .cse0 .cse3 .cse1 .cse4) (and .cse0 .cse1 .cse5 .cse4) (and .cse0 .cse1 (< (+ ~counter~0 1) 99) .cse2) (and .cse0 .cse1 .cse5 .cse2) (and .cse0 .cse1 .cse2) (and .cse0 .cse1 .cse4) (and .cse0 .cse3 .cse1 .cse2))))) [2023-02-18 01:21:46,492 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2023-02-18 01:21:46,492 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 23 65) the Hoare annotation is: true [2023-02-18 01:21:46,492 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-18 01:21:46,492 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-18 01:21:46,492 INFO L899 garLoopResultBuilder]: For program point L49(lines 46 58) no Hoare annotation was computed. [2023-02-18 01:21:46,492 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2023-02-18 01:21:46,492 INFO L899 garLoopResultBuilder]: For program point L37-1(lines 37 61) no Hoare annotation was computed. [2023-02-18 01:21:46,492 INFO L895 garLoopResultBuilder]: At program point L37-3(lines 37 61) the Hoare annotation is: (let ((.cse3 (>= |ULTIMATE.start_main_~y~0#1| 1))) (let ((.cse0 (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|))))) (.cse1 (= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~b~0#1|)) (.cse2 (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|)))) (.cse4 (or (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) .cse3) (and (not .cse3) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0))))) (or (and .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~b~0#1| 0) .cse3 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|) (<= ~counter~0 0) (= |ULTIMATE.start_main_~q~0#1| 0) (= |ULTIMATE.start_main_~a~0#1| 0) .cse4) (and .cse0 (< ~counter~0 100) .cse1 .cse2 .cse3 .cse4) (and (<= (+ ~counter~0 (- 1)) 1) .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse1 .cse2 .cse3 .cse4 (< (+ ~counter~0 1) 99)) (and .cse0 .cse1 .cse2 (< ~counter~0 99) .cse3 .cse4) (and .cse0 .cse1 .cse2 .cse3 .cse4)))) [2023-02-18 01:21:46,492 INFO L895 garLoopResultBuilder]: At program point L37-4(lines 37 61) the Hoare annotation is: (let ((.cse3 (>= |ULTIMATE.start_main_~y~0#1| 1))) (let ((.cse0 (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|))))) (.cse1 (= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~b~0#1|)) (.cse2 (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|)))) (.cse4 (or (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) .cse3) (and (not .cse3) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0))))) (or (and .cse0 (< ~counter~0 100) .cse1 .cse2 .cse3 .cse4) (and (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0)) (and .cse0 .cse1 .cse2 .cse3 .cse4 (< (+ ~counter~0 1) 99)) (and .cse0 .cse1 .cse2 (< ~counter~0 99) .cse3 .cse4) (and .cse0 .cse1 .cse2 .cse3 .cse4)))) [2023-02-18 01:21:46,492 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-18 01:21:46,492 INFO L895 garLoopResultBuilder]: At program point L54(line 54) the Hoare annotation is: (let ((.cse6 (>= |ULTIMATE.start_main_~y~0#1| 1)) (.cse12 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|))) (let ((.cse5 (< ~counter~0 99)) (.cse9 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse10 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse1 (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|))))) (.cse11 (< ~counter~0 100)) (.cse0 (>= |ULTIMATE.start_main_~r~0#1| 0)) (.cse2 (>= |ULTIMATE.start_main_~r~0#1| (* .cse12 2))) (.cse3 (= .cse12 |ULTIMATE.start_main_~b~0#1|)) (.cse7 (<= 1 |ULTIMATE.start_main_~r~0#1|)) (.cse8 (or (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) .cse6) (and (not .cse6) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)))) (.cse4 (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8) (and .cse1 .cse4 (or (and .cse0 .cse2 .cse3 .cse6 .cse9 .cse10 .cse7 .cse8) (and .cse0 .cse2 .cse11 .cse3 .cse6 .cse9 .cse10 .cse7 .cse8))) (and (<= (+ ~counter~0 (- 1)) 1) .cse0 .cse1 .cse2 .cse3 .cse4 .cse6 .cse9 .cse10 .cse7 .cse8) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse9 .cse10 .cse7 .cse8) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse6 .cse9 .cse10 .cse7 .cse8 (< (+ ~counter~0 1) 99)) (and .cse1 (or (and .cse0 .cse2 .cse11 .cse3 .cse6 .cse7 .cse8) (and .cse0 .cse2 .cse3 .cse6 .cse7 .cse8)) .cse4)))) [2023-02-18 01:21:46,492 INFO L899 garLoopResultBuilder]: For program point L54-1(line 54) no Hoare annotation was computed. [2023-02-18 01:21:46,492 INFO L899 garLoopResultBuilder]: For program point L46-1(lines 46 58) no Hoare annotation was computed. [2023-02-18 01:21:46,493 INFO L895 garLoopResultBuilder]: At program point L46-3(lines 46 58) the Hoare annotation is: (let ((.cse6 (>= |ULTIMATE.start_main_~y~0#1| 1))) (let ((.cse4 (>= |ULTIMATE.start_main_~r~0#1| 0)) (.cse5 (= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~b~0#1|)) (.cse9 (<= 1 |ULTIMATE.start_main_~r~0#1|)) (.cse10 (or (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) .cse6) (and (not .cse6) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0))))) (let ((.cse12 (and .cse4 .cse5 .cse6 .cse9 .cse10)) (.cse14 (and .cse5 .cse6 .cse9 .cse10))) (let ((.cse2 (< ~counter~0 99)) (.cse11 (< (+ ~counter~0 1) 99)) (.cse3 (or .cse12 .cse14)) (.cse15 (+ ~counter~0 (- 1))) (.cse0 (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|))))) (.cse1 (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|)))) (.cse13 (< ~counter~0 100)) (.cse7 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse8 (= |ULTIMATE.start_main_~q~0#1| 0))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse0 .cse5 .cse1 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11) (and .cse4 .cse0 .cse5 .cse1 .cse2 .cse6 .cse7 .cse8 .cse9 .cse10) (and .cse0 .cse1 .cse11 .cse3) (and .cse0 .cse1 (or .cse12 (and .cse13 .cse3) .cse14)) (and (<= .cse15 1) .cse4 .cse0 .cse5 .cse1 .cse6 .cse7 .cse8 .cse9 .cse10) (and .cse0 .cse5 .cse1 (<= .cse15 0) .cse6 .cse7 .cse8 .cse9 .cse10) (and .cse0 .cse1 (or (and .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10) (and .cse4 .cse13 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10)))))))) [2023-02-18 01:21:46,493 INFO L899 garLoopResultBuilder]: For program point L46-4(lines 46 58) no Hoare annotation was computed. [2023-02-18 01:21:46,493 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-18 01:21:46,493 INFO L895 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (let ((.cse3 (>= |ULTIMATE.start_main_~y~0#1| 1))) (let ((.cse0 (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|))))) (.cse1 (= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~b~0#1|)) (.cse2 (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|)))) (.cse4 (or (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) .cse3) (and (not .cse3) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0))))) (or (and .cse0 (< ~counter~0 100) .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse1 .cse2 (<= (+ ~counter~0 (- 1)) 0) (= |ULTIMATE.start_main_~b~0#1| 0) .cse3 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) (= |ULTIMATE.start_main_~a~0#1| 0) .cse4) (and .cse0 .cse1 .cse2 .cse3 .cse4 (< (+ ~counter~0 1) 99)) (and .cse0 .cse1 .cse2 (< ~counter~0 99) .cse3 .cse4) (and .cse0 .cse1 .cse2 .cse3 .cse4)))) [2023-02-18 01:21:46,493 INFO L895 garLoopResultBuilder]: At program point L38-1(line 38) the Hoare annotation is: (let ((.cse3 (>= |ULTIMATE.start_main_~y~0#1| 1))) (let ((.cse0 (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|))))) (.cse1 (= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~b~0#1|)) (.cse2 (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|)))) (.cse4 (or (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) .cse3) (and (not .cse3) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0))))) (or (and .cse0 (< ~counter~0 100) .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse1 .cse2 (<= (+ ~counter~0 (- 1)) 0) .cse3 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) .cse4) (and .cse0 .cse1 .cse2 .cse3 .cse4 (< (+ ~counter~0 1) 99)) (and .cse0 .cse1 .cse2 (< ~counter~0 99) .cse3 .cse4) (and .cse0 .cse1 .cse2 .cse3 .cse4)))) [2023-02-18 01:21:46,493 INFO L899 garLoopResultBuilder]: For program point L63(line 63) no Hoare annotation was computed. [2023-02-18 01:21:46,493 INFO L895 garLoopResultBuilder]: At program point L47(line 47) the Hoare annotation is: (let ((.cse8 (>= |ULTIMATE.start_main_~y~0#1| 1))) (let ((.cse6 (>= |ULTIMATE.start_main_~r~0#1| 0)) (.cse7 (= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~b~0#1|)) (.cse11 (<= 1 |ULTIMATE.start_main_~r~0#1|)) (.cse12 (or (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) .cse8) (and (not .cse8) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0))))) (let ((.cse5 (< ~counter~0 99)) (.cse4 (or (and .cse6 .cse7 .cse8 .cse11 .cse12) (and .cse7 .cse8 .cse11 .cse12))) (.cse0 (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|))))) (.cse3 (< ~counter~0 100)) (.cse1 (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|)))) (.cse2 (let ((.cse9 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse10 (= |ULTIMATE.start_main_~q~0#1| 0))) (or (and .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12) (and .cse7 .cse8 .cse9 .cse10 .cse11 .cse12))))) (or (and (<= (+ ~counter~0 (- 1)) 1) .cse0 .cse1 .cse2) (and .cse0 .cse3 .cse1 .cse4) (and .cse0 .cse1 .cse5 .cse4) (and .cse0 .cse1 (< (+ ~counter~0 1) 99) .cse2) (and .cse0 .cse1 .cse5 .cse2) (and .cse0 .cse1 .cse2) (and .cse0 .cse1 .cse4) (and .cse0 .cse3 .cse1 .cse2))))) [2023-02-18 01:21:46,493 INFO L895 garLoopResultBuilder]: At program point L47-1(line 47) the Hoare annotation is: (let ((.cse8 (>= |ULTIMATE.start_main_~y~0#1| 1))) (let ((.cse6 (>= |ULTIMATE.start_main_~r~0#1| 0)) (.cse7 (= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~b~0#1|)) (.cse11 (<= 1 |ULTIMATE.start_main_~r~0#1|)) (.cse12 (or (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) .cse8) (and (not .cse8) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0))))) (let ((.cse5 (< ~counter~0 99)) (.cse4 (or (and .cse6 .cse7 .cse8 .cse11 .cse12) (and .cse7 .cse8 .cse11 .cse12))) (.cse0 (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|))))) (.cse3 (< ~counter~0 100)) (.cse1 (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|)))) (.cse2 (let ((.cse9 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse10 (= |ULTIMATE.start_main_~q~0#1| 0))) (or (and .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12) (and .cse7 .cse8 .cse9 .cse10 .cse11 .cse12))))) (or (and (<= (+ ~counter~0 (- 1)) 1) .cse0 .cse1 .cse2) (and .cse0 .cse3 .cse1 .cse4) (and .cse0 .cse1 .cse5 .cse4) (and .cse0 .cse1 (< (+ ~counter~0 1) 99) .cse2) (and .cse0 .cse1 .cse5 .cse2) (and .cse0 .cse1 .cse2) (and .cse0 .cse1 .cse4) (and .cse0 .cse3 .cse1 .cse2))))) [2023-02-18 01:21:46,493 INFO L899 garLoopResultBuilder]: For program point L39(lines 37 61) no Hoare annotation was computed. [2023-02-18 01:21:46,493 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2023-02-18 01:21:46,493 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2023-02-18 01:21:46,493 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2023-02-18 01:21:46,493 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2023-02-18 01:21:46,494 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 14 20) the Hoare annotation is: (let ((.cse15 (+ ~counter~0 (- 1)))) (let ((.cse3 (= |__VERIFIER_assert_#in~cond| 0)) (.cse13 (< ~counter~0 99)) (.cse14 (< ~counter~0 100)) (.cse9 (= |__VERIFIER_assert_#in~cond| 1)) (.cse5 (<= .cse15 1)) (.cse2 (< (+ ~counter~0 1) 99)) (.cse7 (<= .cse15 0))) (let ((.cse6 (not .cse7)) (.cse0 (not .cse2)) (.cse4 (not .cse5)) (.cse8 (and .cse14 .cse9)) (.cse10 (not .cse9)) (.cse12 (not .cse13)) (.cse1 (not .cse3)) (.cse11 (not .cse14))) (and (or .cse0 (and .cse1 .cse2) .cse3) (or .cse4 (and .cse5 .cse1) .cse3) (or .cse6 .cse3 (and .cse1 .cse7)) (or .cse8 .cse9 (and (or .cse10 .cse11) .cse10)) (or .cse12 (and .cse13 .cse9) .cse10) (or (and .cse9 .cse2) .cse0 .cse10) (or .cse4 .cse10 .cse3 (and .cse5 .cse1 .cse9)) (or .cse6 .cse10 (and .cse1 .cse7 .cse9) .cse3) (or .cse0 .cse10 (and .cse1 .cse9 .cse2) .cse3) (or .cse4 .cse10 (and .cse5 .cse9)) (or .cse12 .cse10 (and .cse1 .cse13 .cse9) .cse3) (or .cse10 .cse8 .cse11) (or (and .cse1 .cse14 .cse9) .cse10 .cse3 .cse11) (or .cse12 (and .cse1 .cse13) .cse3) (or (and .cse1 .cse14) .cse3 .cse11))))) [2023-02-18 01:21:46,494 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2023-02-18 01:21:46,496 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 01:21:46,497 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-18 01:21:46,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.02 01:21:46 BoogieIcfgContainer [2023-02-18 01:21:46,514 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-18 01:21:46,514 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-18 01:21:46,514 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-18 01:21:46,515 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-18 01:21:46,515 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 01:21:42" (3/4) ... [2023-02-18 01:21:46,517 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-18 01:21:46,520 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-02-18 01:21:46,523 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-02-18 01:21:46,523 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-18 01:21:46,523 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-18 01:21:46,523 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-18 01:21:46,545 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-18 01:21:46,545 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-18 01:21:46,545 INFO L158 Benchmark]: Toolchain (without parser) took 4899.25ms. Allocated memory was 134.2MB in the beginning and 176.2MB in the end (delta: 41.9MB). Free memory was 88.5MB in the beginning and 74.5MB in the end (delta: 14.0MB). Peak memory consumption was 56.4MB. Max. memory is 16.1GB. [2023-02-18 01:21:46,545 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 100.7MB. Free memory is still 49.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 01:21:46,545 INFO L158 Benchmark]: CACSL2BoogieTranslator took 205.25ms. Allocated memory is still 134.2MB. Free memory was 88.5MB in the beginning and 78.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-18 01:21:46,545 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.00ms. Allocated memory is still 134.2MB. Free memory was 77.6MB in the beginning and 76.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 01:21:46,546 INFO L158 Benchmark]: Boogie Preprocessor took 32.65ms. Allocated memory is still 134.2MB. Free memory was 76.4MB in the beginning and 75.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 01:21:46,546 INFO L158 Benchmark]: RCFGBuilder took 242.50ms. Allocated memory is still 134.2MB. Free memory was 75.0MB in the beginning and 64.6MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-18 01:21:46,546 INFO L158 Benchmark]: TraceAbstraction took 4359.92ms. Allocated memory was 134.2MB in the beginning and 176.2MB in the end (delta: 41.9MB). Free memory was 64.1MB in the beginning and 77.6MB in the end (delta: -13.5MB). Peak memory consumption was 31.2MB. Max. memory is 16.1GB. [2023-02-18 01:21:46,546 INFO L158 Benchmark]: Witness Printer took 30.31ms. Allocated memory is still 176.2MB. Free memory was 77.6MB in the beginning and 74.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 01:21:46,547 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 100.7MB. Free memory is still 49.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 205.25ms. Allocated memory is still 134.2MB. Free memory was 88.5MB in the beginning and 78.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.00ms. Allocated memory is still 134.2MB. Free memory was 77.6MB in the beginning and 76.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 32.65ms. Allocated memory is still 134.2MB. Free memory was 76.4MB in the beginning and 75.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 242.50ms. Allocated memory is still 134.2MB. Free memory was 75.0MB in the beginning and 64.6MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 4359.92ms. Allocated memory was 134.2MB in the beginning and 176.2MB in the end (delta: 41.9MB). Free memory was 64.1MB in the beginning and 77.6MB in the end (delta: -13.5MB). Peak memory consumption was 31.2MB. Max. memory is 16.1GB. * Witness Printer took 30.31ms. Allocated memory is still 176.2MB. Free memory was 77.6MB in the beginning and 74.5MB in the end (delta: 3.1MB). 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: 17]: 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 2 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.3s, OverallIterations: 10, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 225 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 207 mSDsluCounter, 1007 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 686 mSDsCounter, 67 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 622 IncrementalHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 67 mSolverCounterUnsat, 321 mSDtfsCounter, 622 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 420 GetRequests, 343 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=202occurred in iteration=9, InterpolantAutomatonStates: 63, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 33 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 71 PreInvPairs, 131 NumberOfFragments, 4595 HoareAnnotationTreeSize, 71 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 273 NumberOfCodeBlocks, 273 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 405 ConstructedInterpolants, 0 QuantifiedInterpolants, 1517 SizeOfPredicates, 39 NumberOfNonLiveVariables, 891 ConjunctsInSsa, 110 ConjunctsInUnsatCore, 15 InterpolantComputations, 8 PerfectInterpolantSequences, 374/418 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: 23]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: (((((((((x == (a + q) * y + (r + -b) && x == r + q * y) && counter < 99) && (((((r >= 0 && a * y == b) && y >= 1) && 1 <= r) && ((cond == 1 && y >= 1) || (!(y >= 1) && cond == 0))) || (((a * y == b && y >= 1) && 1 <= r) && ((cond == 1 && y >= 1) || (!(y >= 1) && cond == 0))))) || (((((((((r >= 0 && x == (a + q) * y + (r + -b)) && a * y == b) && x == r + q * y) && y >= 1) && r == x) && q == 0) && 1 <= r) && ((cond == 1 && y >= 1) || (!(y >= 1) && cond == 0))) && counter + 1 < 99)) || (((((((((r >= 0 && x == (a + q) * y + (r + -b)) && a * y == b) && x == r + q * y) && counter < 99) && y >= 1) && r == x) && q == 0) && 1 <= r) && ((cond == 1 && y >= 1) || (!(y >= 1) && cond == 0)))) || (((x == (a + q) * y + (r + -b) && x == r + q * y) && counter + 1 < 99) && (((((r >= 0 && a * y == b) && y >= 1) && 1 <= r) && ((cond == 1 && y >= 1) || (!(y >= 1) && cond == 0))) || (((a * y == b && y >= 1) && 1 <= r) && ((cond == 1 && y >= 1) || (!(y >= 1) && cond == 0)))))) || ((x == (a + q) * y + (r + -b) && x == r + q * y) && ((((((r >= 0 && a * y == b) && y >= 1) && 1 <= r) && ((cond == 1 && y >= 1) || (!(y >= 1) && cond == 0))) || (counter < 100 && (((((r >= 0 && a * y == b) && y >= 1) && 1 <= r) && ((cond == 1 && y >= 1) || (!(y >= 1) && cond == 0))) || (((a * y == b && y >= 1) && 1 <= r) && ((cond == 1 && y >= 1) || (!(y >= 1) && cond == 0)))))) || (((a * y == b && y >= 1) && 1 <= r) && ((cond == 1 && y >= 1) || (!(y >= 1) && cond == 0)))))) || (((((((((counter + -1 <= 1 && r >= 0) && x == (a + q) * y + (r + -b)) && a * y == b) && x == r + q * y) && y >= 1) && r == x) && q == 0) && 1 <= r) && ((cond == 1 && y >= 1) || (!(y >= 1) && cond == 0)))) || ((((((((x == (a + q) * y + (r + -b) && a * y == b) && x == r + q * y) && counter + -1 <= 0) && y >= 1) && r == x) && q == 0) && 1 <= r) && ((cond == 1 && y >= 1) || (!(y >= 1) && cond == 0)))) || ((x == (a + q) * y + (r + -b) && x == r + q * y) && (((((((r >= 0 && a * y == b) && y >= 1) && r == x) && q == 0) && 1 <= r) && ((cond == 1 && y >= 1) || (!(y >= 1) && cond == 0))) || (((((((r >= 0 && counter < 100) && a * y == b) && y >= 1) && r == x) && q == 0) && 1 <= r) && ((cond == 1 && y >= 1) || (!(y >= 1) && cond == 0))))) - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (((((((((((((x == (a + q) * y + (r + -b) && a * y == b) && x == r + q * y) && b == 0) && y >= 1) && r == x) && counter <= 0) && q == 0) && a == 0) && ((cond == 1 && y >= 1) || (!(y >= 1) && cond == 0))) || (((((x == (a + q) * y + (r + -b) && counter < 100) && a * y == b) && x == r + q * y) && y >= 1) && ((cond == 1 && y >= 1) || (!(y >= 1) && cond == 0)))) || (((((counter + -1 <= 1 && x == (a + q) * y + (r + -b)) && a * y == b) && x == r + q * y) && y >= 1) && ((cond == 1 && y >= 1) || (!(y >= 1) && cond == 0)))) || (((((x == (a + q) * y + (r + -b) && a * y == b) && x == r + q * y) && y >= 1) && ((cond == 1 && y >= 1) || (!(y >= 1) && cond == 0))) && counter + 1 < 99)) || (((((x == (a + q) * y + (r + -b) && a * y == b) && x == r + q * y) && counter < 99) && y >= 1) && ((cond == 1 && y >= 1) || (!(y >= 1) && cond == 0)))) || ((((x == (a + q) * y + (r + -b) && a * y == b) && x == r + q * y) && y >= 1) && ((cond == 1 && y >= 1) || (!(y >= 1) && cond == 0))) RESULT: Ultimate proved your program to be correct! [2023-02-18 01:21:46,570 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