./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/cohencu-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5317dae 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/cohencu-ll.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 bf57d72e341b105161cbeacf29e58db93d2b67f8e0e097e4dbed74551cbdcfff --- Real Ultimate output --- This is Ultimate 0.2.2-?-b5317da-m [2023-02-16 01:37:48,172 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 01:37:48,173 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 01:37:48,217 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 01:37:48,217 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 01:37:48,220 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 01:37:48,223 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 01:37:48,226 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 01:37:48,228 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 01:37:48,234 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 01:37:48,234 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 01:37:48,235 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 01:37:48,235 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 01:37:48,236 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 01:37:48,237 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 01:37:48,238 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 01:37:48,238 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 01:37:48,239 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 01:37:48,241 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 01:37:48,242 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 01:37:48,243 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 01:37:48,249 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 01:37:48,251 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 01:37:48,252 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 01:37:48,260 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 01:37:48,260 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 01:37:48,260 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 01:37:48,262 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 01:37:48,262 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 01:37:48,263 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 01:37:48,263 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 01:37:48,264 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 01:37:48,265 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 01:37:48,266 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 01:37:48,267 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 01:37:48,267 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 01:37:48,267 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 01:37:48,267 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 01:37:48,268 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 01:37:48,268 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 01:37:48,269 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 01:37:48,270 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-16 01:37:48,302 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 01:37:48,302 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 01:37:48,303 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 01:37:48,303 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 01:37:48,304 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 01:37:48,304 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 01:37:48,304 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 01:37:48,305 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 01:37:48,305 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 01:37:48,305 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 01:37:48,306 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-16 01:37:48,306 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 01:37:48,306 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-16 01:37:48,306 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 01:37:48,306 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-16 01:37:48,307 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 01:37:48,307 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-16 01:37:48,307 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-16 01:37:48,307 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-16 01:37:48,307 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 01:37:48,307 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-16 01:37:48,307 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 01:37:48,308 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 01:37:48,308 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 01:37:48,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 01:37:48,308 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 01:37:48,308 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 01:37:48,308 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-16 01:37:48,309 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-16 01:37:48,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-16 01:37:48,309 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 01:37:48,309 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-16 01:37:48,310 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 01:37:48,310 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 01:37:48,310 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 01:37:48,310 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf57d72e341b105161cbeacf29e58db93d2b67f8e0e097e4dbed74551cbdcfff [2023-02-16 01:37:48,524 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 01:37:48,541 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 01:37:48,543 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 01:37:48,544 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 01:37:48,545 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 01:37:48,546 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/cohencu-ll.c [2023-02-16 01:37:49,740 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 01:37:49,906 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 01:37:49,906 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/cohencu-ll.c [2023-02-16 01:37:49,911 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a08f9b008/d4c0b760ad6b4142b8e29fff3f3b30f4/FLAG34c1f2671 [2023-02-16 01:37:49,923 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a08f9b008/d4c0b760ad6b4142b8e29fff3f3b30f4 [2023-02-16 01:37:49,925 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 01:37:49,926 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 01:37:49,927 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 01:37:49,927 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 01:37:49,930 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 01:37:49,931 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 01:37:49" (1/1) ... [2023-02-16 01:37:49,931 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e7ae2ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:37:49, skipping insertion in model container [2023-02-16 01:37:49,932 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 01:37:49" (1/1) ... [2023-02-16 01:37:49,937 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 01:37:49,950 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 01:37:50,095 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/cohencu-ll.c[588,601] [2023-02-16 01:37:50,129 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 01:37:50,139 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 01:37:50,153 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/cohencu-ll.c[588,601] [2023-02-16 01:37:50,176 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 01:37:50,190 INFO L208 MainTranslator]: Completed translation [2023-02-16 01:37:50,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:37:50 WrapperNode [2023-02-16 01:37:50,191 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 01:37:50,192 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 01:37:50,192 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 01:37:50,193 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 01:37:50,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:37:50" (1/1) ... [2023-02-16 01:37:50,213 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:37:50" (1/1) ... [2023-02-16 01:37:50,233 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 44 [2023-02-16 01:37:50,234 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 01:37:50,235 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 01:37:50,235 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 01:37:50,235 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 01:37:50,242 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:37:50" (1/1) ... [2023-02-16 01:37:50,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:37:50" (1/1) ... [2023-02-16 01:37:50,245 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:37:50" (1/1) ... [2023-02-16 01:37:50,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:37:50" (1/1) ... [2023-02-16 01:37:50,257 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:37:50" (1/1) ... [2023-02-16 01:37:50,260 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:37:50" (1/1) ... [2023-02-16 01:37:50,264 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:37:50" (1/1) ... [2023-02-16 01:37:50,265 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:37:50" (1/1) ... [2023-02-16 01:37:50,267 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 01:37:50,268 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 01:37:50,268 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 01:37:50,269 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 01:37:50,271 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:37:50" (1/1) ... [2023-02-16 01:37:50,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 01:37:50,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:37:50,302 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) [2023-02-16 01:37:50,319 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 [2023-02-16 01:37:50,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-16 01:37:50,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-16 01:37:50,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 01:37:50,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 01:37:50,338 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-16 01:37:50,339 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-16 01:37:50,378 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 01:37:50,380 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 01:37:50,568 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 01:37:50,592 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 01:37:50,592 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-16 01:37:50,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 01:37:50 BoogieIcfgContainer [2023-02-16 01:37:50,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 01:37:50,596 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-16 01:37:50,596 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-16 01:37:50,598 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-16 01:37:50,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 01:37:49" (1/3) ... [2023-02-16 01:37:50,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46109ecd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 01:37:50, skipping insertion in model container [2023-02-16 01:37:50,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:37:50" (2/3) ... [2023-02-16 01:37:50,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46109ecd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 01:37:50, skipping insertion in model container [2023-02-16 01:37:50,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 01:37:50" (3/3) ... [2023-02-16 01:37:50,600 INFO L112 eAbstractionObserver]: Analyzing ICFG cohencu-ll.c [2023-02-16 01:37:50,629 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-16 01:37:50,630 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-16 01:37:50,694 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-16 01:37:50,703 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;@573a3b0a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-16 01:37:50,704 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-16 01:37:50,707 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-16 01:37:50,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-16 01:37:50,712 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:37:50,713 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:37:50,714 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:37:50,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:37:50,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1823012769, now seen corresponding path program 1 times [2023-02-16 01:37:50,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:37:50,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029524902] [2023-02-16 01:37:50,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:37:50,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:37:50,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:37:50,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:37:50,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:37:50,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029524902] [2023-02-16 01:37:50,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029524902] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:37:50,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 01:37:50,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-16 01:37:50,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115056209] [2023-02-16 01:37:50,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:37:50,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-16 01:37:50,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:37:50,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-16 01:37:50,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-16 01:37:50,932 INFO L87 Difference]: Start difference. First operand has 25 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2023-02-16 01:37:50,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:37:50,957 INFO L93 Difference]: Finished difference Result 48 states and 85 transitions. [2023-02-16 01:37:50,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-16 01:37:50,959 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 7 [2023-02-16 01:37:50,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:37:50,970 INFO L225 Difference]: With dead ends: 48 [2023-02-16 01:37:50,970 INFO L226 Difference]: Without dead ends: 21 [2023-02-16 01:37:50,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-16 01:37:50,977 INFO L413 NwaCegarLoop]: 35 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, 35 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 [2023-02-16 01:37:50,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 01:37:50,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-02-16 01:37:51,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-02-16 01:37:51,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 8 states have (on average 1.25) internal successors, (10), 9 states have internal predecessors, (10), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-02-16 01:37:51,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 31 transitions. [2023-02-16 01:37:51,016 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 31 transitions. Word has length 7 [2023-02-16 01:37:51,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:37:51,017 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 31 transitions. [2023-02-16 01:37:51,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2023-02-16 01:37:51,017 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 31 transitions. [2023-02-16 01:37:51,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-16 01:37:51,018 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:37:51,018 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:37:51,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-16 01:37:51,019 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:37:51,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:37:51,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1811632607, now seen corresponding path program 1 times [2023-02-16 01:37:51,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:37:51,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066793426] [2023-02-16 01:37:51,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:37:51,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:37:51,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:37:51,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:37:51,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:37:51,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066793426] [2023-02-16 01:37:51,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066793426] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:37:51,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 01:37:51,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-16 01:37:51,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314331502] [2023-02-16 01:37:51,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:37:51,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 01:37:51,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:37:51,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 01:37:51,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-16 01:37:51,290 INFO L87 Difference]: Start difference. First operand 21 states and 31 transitions. Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 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) [2023-02-16 01:37:51,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:37:51,393 INFO L93 Difference]: Finished difference Result 27 states and 36 transitions. [2023-02-16 01:37:51,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-16 01:37:51,394 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 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 7 [2023-02-16 01:37:51,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:37:51,395 INFO L225 Difference]: With dead ends: 27 [2023-02-16 01:37:51,395 INFO L226 Difference]: Without dead ends: 25 [2023-02-16 01:37:51,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-16 01:37:51,401 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 7 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 01:37:51,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 56 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 01:37:51,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-02-16 01:37:51,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-02-16 01:37:51,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-02-16 01:37:51,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2023-02-16 01:37:51,425 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 7 [2023-02-16 01:37:51,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:37:51,426 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2023-02-16 01:37:51,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 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) [2023-02-16 01:37:51,427 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2023-02-16 01:37:51,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-16 01:37:51,428 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:37:51,428 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:37:51,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-16 01:37:51,429 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:37:51,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:37:51,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1582559355, now seen corresponding path program 1 times [2023-02-16 01:37:51,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:37:51,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455122727] [2023-02-16 01:37:51,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:37:51,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:37:51,442 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 01:37:51,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1757025976] [2023-02-16 01:37:51,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:37:51,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:37:51,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:37:51,452 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) [2023-02-16 01:37:51,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-16 01:37:51,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:37:51,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-16 01:37:51,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:37:51,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:37:51,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:37:51,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:37:51,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:37:51,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455122727] [2023-02-16 01:37:51,761 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 01:37:51,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757025976] [2023-02-16 01:37:51,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757025976] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 01:37:51,762 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 01:37:51,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2023-02-16 01:37:51,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674998666] [2023-02-16 01:37:51,763 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 01:37:51,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-16 01:37:51,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:37:51,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-16 01:37:51,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-02-16 01:37:51,765 INFO L87 Difference]: Start difference. First operand 25 states and 34 transitions. Second operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-16 01:37:52,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:37:52,110 INFO L93 Difference]: Finished difference Result 50 states and 69 transitions. [2023-02-16 01:37:52,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-16 01:37:52,111 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 12 [2023-02-16 01:37:52,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:37:52,113 INFO L225 Difference]: With dead ends: 50 [2023-02-16 01:37:52,113 INFO L226 Difference]: Without dead ends: 48 [2023-02-16 01:37:52,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-02-16 01:37:52,114 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 18 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-16 01:37:52,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 45 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-16 01:37:52,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-02-16 01:37:52,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2023-02-16 01:37:52,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 21 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-02-16 01:37:52,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 63 transitions. [2023-02-16 01:37:52,129 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 63 transitions. Word has length 12 [2023-02-16 01:37:52,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:37:52,130 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 63 transitions. [2023-02-16 01:37:52,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-16 01:37:52,130 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 63 transitions. [2023-02-16 01:37:52,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-16 01:37:52,130 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:37:52,131 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:37:52,137 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-16 01:37:52,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:37:52,335 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:37:52,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:37:52,336 INFO L85 PathProgramCache]: Analyzing trace with hash 424345951, now seen corresponding path program 1 times [2023-02-16 01:37:52,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:37:52,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109494194] [2023-02-16 01:37:52,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:37:52,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:37:52,345 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 01:37:52,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1962835557] [2023-02-16 01:37:52,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:37:52,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:37:52,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:37:52,348 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) [2023-02-16 01:37:52,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-16 01:37:52,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:37:52,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-16 01:37:52,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:37:52,466 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-16 01:37:52,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:37:52,598 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-16 01:37:52,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:37:52,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109494194] [2023-02-16 01:37:52,599 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 01:37:52,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962835557] [2023-02-16 01:37:52,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962835557] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 01:37:52,599 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 01:37:52,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2023-02-16 01:37:52,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998854815] [2023-02-16 01:37:52,599 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 01:37:52,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-16 01:37:52,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:37:52,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-16 01:37:52,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-02-16 01:37:52,601 INFO L87 Difference]: Start difference. First operand 45 states and 63 transitions. Second operand has 12 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-16 01:37:52,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:37:52,867 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2023-02-16 01:37:52,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-16 01:37:52,868 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 17 [2023-02-16 01:37:52,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:37:52,869 INFO L225 Difference]: With dead ends: 52 [2023-02-16 01:37:52,869 INFO L226 Difference]: Without dead ends: 50 [2023-02-16 01:37:52,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-02-16 01:37:52,870 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 18 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 01:37:52,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 44 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 01:37:52,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-02-16 01:37:52,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2023-02-16 01:37:52,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 24 states have internal predecessors, (25), 21 states have call successors, (21), 5 states have call predecessors, (21), 5 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-02-16 01:37:52,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 66 transitions. [2023-02-16 01:37:52,883 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 66 transitions. Word has length 17 [2023-02-16 01:37:52,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:37:52,884 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 66 transitions. [2023-02-16 01:37:52,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-16 01:37:52,884 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 66 transitions. [2023-02-16 01:37:52,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-16 01:37:52,885 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:37:52,885 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:37:52,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-16 01:37:53,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-02-16 01:37:53,091 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:37:53,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:37:53,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1752711045, now seen corresponding path program 1 times [2023-02-16 01:37:53,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:37:53,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069424528] [2023-02-16 01:37:53,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:37:53,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:37:53,101 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 01:37:53,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1603280970] [2023-02-16 01:37:53,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:37:53,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:37:53,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:37:53,107 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) [2023-02-16 01:37:53,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-16 01:37:53,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:37:53,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-16 01:37:53,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:37:53,229 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-16 01:37:53,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:37:53,755 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-16 01:37:53,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:37:53,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069424528] [2023-02-16 01:37:53,755 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 01:37:53,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603280970] [2023-02-16 01:37:53,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603280970] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 01:37:53,755 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 01:37:53,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2023-02-16 01:37:53,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602930504] [2023-02-16 01:37:53,756 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 01:37:53,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-16 01:37:53,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:37:53,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-16 01:37:53,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-02-16 01:37:53,766 INFO L87 Difference]: Start difference. First operand 49 states and 66 transitions. Second operand has 12 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) [2023-02-16 01:37:54,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:37:54,466 INFO L93 Difference]: Finished difference Result 65 states and 84 transitions. [2023-02-16 01:37:54,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-16 01:37:54,466 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) Word has length 22 [2023-02-16 01:37:54,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:37:54,468 INFO L225 Difference]: With dead ends: 65 [2023-02-16 01:37:54,468 INFO L226 Difference]: Without dead ends: 56 [2023-02-16 01:37:54,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-02-16 01:37:54,469 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 19 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-16 01:37:54,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 41 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-02-16 01:37:54,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-02-16 01:37:54,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-02-16 01:37:54,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 31 states have internal predecessors, (31), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2023-02-16 01:37:54,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 68 transitions. [2023-02-16 01:37:54,487 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 68 transitions. Word has length 22 [2023-02-16 01:37:54,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:37:54,487 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 68 transitions. [2023-02-16 01:37:54,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) [2023-02-16 01:37:54,487 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 68 transitions. [2023-02-16 01:37:54,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-02-16 01:37:54,488 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:37:54,488 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:37:54,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-16 01:37:54,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:37:54,694 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:37:54,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:37:54,694 INFO L85 PathProgramCache]: Analyzing trace with hash 190158181, now seen corresponding path program 1 times [2023-02-16 01:37:54,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:37:54,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386668208] [2023-02-16 01:37:54,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:37:54,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:37:54,703 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 01:37:54,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1279318934] [2023-02-16 01:37:54,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:37:54,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:37:54,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:37:54,705 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) [2023-02-16 01:37:54,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-16 01:37:54,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:37:54,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 23 conjunts are in the unsatisfiable core [2023-02-16 01:37:54,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:37:54,864 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-02-16 01:37:54,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:37:55,023 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-02-16 01:37:55,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:37:55,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386668208] [2023-02-16 01:37:55,024 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 01:37:55,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279318934] [2023-02-16 01:37:55,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279318934] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 01:37:55,024 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 01:37:55,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2023-02-16 01:37:55,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669681657] [2023-02-16 01:37:55,025 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 01:37:55,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-16 01:37:55,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:37:55,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-16 01:37:55,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-02-16 01:37:55,027 INFO L87 Difference]: Start difference. First operand 56 states and 68 transitions. Second operand has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 11 states have internal predecessors, (22), 6 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 6 states have call successors, (14) [2023-02-16 01:37:57,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-16 01:37:57,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:37:57,498 INFO L93 Difference]: Finished difference Result 80 states and 97 transitions. [2023-02-16 01:37:57,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-16 01:37:57,499 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 11 states have internal predecessors, (22), 6 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 6 states have call successors, (14) Word has length 44 [2023-02-16 01:37:57,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:37:57,500 INFO L225 Difference]: With dead ends: 80 [2023-02-16 01:37:57,500 INFO L226 Difference]: Without dead ends: 78 [2023-02-16 01:37:57,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2023-02-16 01:37:57,501 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 22 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 69 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-02-16 01:37:57,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 52 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 277 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2023-02-16 01:37:57,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-02-16 01:37:57,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2023-02-16 01:37:57,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 40 states have (on average 1.075) internal successors, (43), 43 states have internal predecessors, (43), 26 states have call successors, (26), 10 states have call predecessors, (26), 10 states have return successors, (25), 23 states have call predecessors, (25), 25 states have call successors, (25) [2023-02-16 01:37:57,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 94 transitions. [2023-02-16 01:37:57,528 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 94 transitions. Word has length 44 [2023-02-16 01:37:57,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:37:57,528 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 94 transitions. [2023-02-16 01:37:57,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 11 states have internal predecessors, (22), 6 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 6 states have call successors, (14) [2023-02-16 01:37:57,529 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 94 transitions. [2023-02-16 01:37:57,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-02-16 01:37:57,530 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:37:57,530 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-02-16 01:37:57,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-16 01:37:57,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:37:57,735 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:37:57,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:37:57,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1122712219, now seen corresponding path program 2 times [2023-02-16 01:37:57,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:37:57,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132673277] [2023-02-16 01:37:57,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:37:57,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:37:57,745 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 01:37:57,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1076466744] [2023-02-16 01:37:57,746 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 01:37:57,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:37:57,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:37:57,747 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) [2023-02-16 01:37:57,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-16 01:37:57,802 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 01:37:57,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 01:37:57,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 23 conjunts are in the unsatisfiable core [2023-02-16 01:37:57,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:37:57,918 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 17 proven. 31 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-02-16 01:37:57,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:37:58,123 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 19 proven. 25 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-02-16 01:37:58,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:37:58,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132673277] [2023-02-16 01:37:58,123 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 01:37:58,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076466744] [2023-02-16 01:37:58,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076466744] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 01:37:58,123 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 01:37:58,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2023-02-16 01:37:58,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360323486] [2023-02-16 01:37:58,124 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 01:37:58,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-16 01:37:58,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:37:58,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-16 01:37:58,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-02-16 01:37:58,125 INFO L87 Difference]: Start difference. First operand 77 states and 94 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 states have internal predecessors, (22), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2023-02-16 01:37:58,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:37:58,876 INFO L93 Difference]: Finished difference Result 84 states and 100 transitions. [2023-02-16 01:37:58,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-16 01:37:58,877 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 states have internal predecessors, (22), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 54 [2023-02-16 01:37:58,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:37:58,878 INFO L225 Difference]: With dead ends: 84 [2023-02-16 01:37:58,878 INFO L226 Difference]: Without dead ends: 79 [2023-02-16 01:37:58,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-02-16 01:37:58,879 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 18 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-16 01:37:58,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 57 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-16 01:37:58,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-02-16 01:37:58,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2023-02-16 01:37:58,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 43 states have (on average 1.069767441860465) internal successors, (46), 46 states have internal predecessors, (46), 24 states have call successors, (24), 11 states have call predecessors, (24), 11 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-02-16 01:37:58,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 92 transitions. [2023-02-16 01:37:58,901 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 92 transitions. Word has length 54 [2023-02-16 01:37:58,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:37:58,902 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 92 transitions. [2023-02-16 01:37:58,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 states have internal predecessors, (22), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2023-02-16 01:37:58,902 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 92 transitions. [2023-02-16 01:37:58,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-02-16 01:37:58,904 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:37:58,904 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:37:58,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-16 01:37:59,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:37:59,110 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:37:59,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:37:59,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1898506858, now seen corresponding path program 1 times [2023-02-16 01:37:59,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:37:59,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633222947] [2023-02-16 01:37:59,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:37:59,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:37:59,132 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 01:37:59,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [530246198] [2023-02-16 01:37:59,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:37:59,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:37:59,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:37:59,140 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) [2023-02-16 01:37:59,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-16 01:37:59,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:37:59,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 28 conjunts are in the unsatisfiable core [2023-02-16 01:37:59,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:37:59,641 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 21 proven. 38 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-02-16 01:37:59,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:37:59,974 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 23 proven. 36 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-02-16 01:37:59,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:37:59,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633222947] [2023-02-16 01:37:59,974 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 01:37:59,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530246198] [2023-02-16 01:37:59,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530246198] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 01:37:59,977 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 01:37:59,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2023-02-16 01:37:59,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256481194] [2023-02-16 01:37:59,978 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 01:37:59,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-16 01:37:59,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:37:59,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-16 01:37:59,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-02-16 01:37:59,982 INFO L87 Difference]: Start difference. First operand 79 states and 92 transitions. Second operand has 14 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 7 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22) [2023-02-16 01:38:00,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:38:00,469 INFO L93 Difference]: Finished difference Result 85 states and 97 transitions. [2023-02-16 01:38:00,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-16 01:38:00,469 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 7 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22) Word has length 65 [2023-02-16 01:38:00,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:38:00,470 INFO L225 Difference]: With dead ends: 85 [2023-02-16 01:38:00,471 INFO L226 Difference]: Without dead ends: 83 [2023-02-16 01:38:00,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2023-02-16 01:38:00,471 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 18 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-16 01:38:00,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 55 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-16 01:38:00,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-02-16 01:38:00,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2023-02-16 01:38:00,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 46 states have (on average 1.065217391304348) internal successors, (49), 49 states have internal predecessors, (49), 24 states have call successors, (24), 12 states have call predecessors, (24), 12 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-02-16 01:38:00,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 95 transitions. [2023-02-16 01:38:00,502 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 95 transitions. Word has length 65 [2023-02-16 01:38:00,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:38:00,502 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 95 transitions. [2023-02-16 01:38:00,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 7 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22) [2023-02-16 01:38:00,503 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 95 transitions. [2023-02-16 01:38:00,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-02-16 01:38:00,504 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:38:00,504 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:38:00,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-16 01:38:00,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:38:00,711 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:38:00,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:38:00,711 INFO L85 PathProgramCache]: Analyzing trace with hash 161977518, now seen corresponding path program 1 times [2023-02-16 01:38:00,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:38:00,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922778176] [2023-02-16 01:38:00,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:38:00,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:38:00,719 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 01:38:00,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [950636277] [2023-02-16 01:38:00,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:38:00,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:38:00,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:38:00,721 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) [2023-02-16 01:38:00,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-16 01:38:00,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:38:00,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 26 conjunts are in the unsatisfiable core [2023-02-16 01:38:00,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:38:01,138 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 23 proven. 41 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-02-16 01:38:01,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:38:01,426 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 23 proven. 41 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-02-16 01:38:01,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:38:01,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922778176] [2023-02-16 01:38:01,426 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 01:38:01,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950636277] [2023-02-16 01:38:01,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950636277] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 01:38:01,426 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 01:38:01,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2023-02-16 01:38:01,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956282687] [2023-02-16 01:38:01,427 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 01:38:01,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-16 01:38:01,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:38:01,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-16 01:38:01,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-02-16 01:38:01,429 INFO L87 Difference]: Start difference. First operand 83 states and 95 transitions. Second operand has 15 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 7 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (24), 6 states have call predecessors, (24), 7 states have call successors, (24) [2023-02-16 01:38:02,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:38:02,326 INFO L93 Difference]: Finished difference Result 111 states and 133 transitions. [2023-02-16 01:38:02,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-02-16 01:38:02,326 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 7 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (24), 6 states have call predecessors, (24), 7 states have call successors, (24) Word has length 70 [2023-02-16 01:38:02,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:38:02,327 INFO L225 Difference]: With dead ends: 111 [2023-02-16 01:38:02,327 INFO L226 Difference]: Without dead ends: 102 [2023-02-16 01:38:02,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2023-02-16 01:38:02,328 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 17 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-16 01:38:02,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 63 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-02-16 01:38:02,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-02-16 01:38:02,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2023-02-16 01:38:02,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 55 states have (on average 1.0727272727272728) internal successors, (59), 57 states have internal predecessors, (59), 32 states have call successors, (32), 14 states have call predecessors, (32), 14 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2023-02-16 01:38:02,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 122 transitions. [2023-02-16 01:38:02,367 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 122 transitions. Word has length 70 [2023-02-16 01:38:02,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:38:02,367 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 122 transitions. [2023-02-16 01:38:02,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 7 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (24), 6 states have call predecessors, (24), 7 states have call successors, (24) [2023-02-16 01:38:02,367 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 122 transitions. [2023-02-16 01:38:02,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-02-16 01:38:02,368 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:38:02,368 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2023-02-16 01:38:02,375 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-02-16 01:38:02,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:38:02,576 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:38:02,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:38:02,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1175438523, now seen corresponding path program 3 times [2023-02-16 01:38:02,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:38:02,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199130948] [2023-02-16 01:38:02,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:38:02,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:38:02,591 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 01:38:02,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1784743723] [2023-02-16 01:38:02,592 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-16 01:38:02,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:38:02,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:38:02,595 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) [2023-02-16 01:38:02,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-16 01:38:02,721 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-02-16 01:38:02,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 01:38:02,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 35 conjunts are in the unsatisfiable core [2023-02-16 01:38:02,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:38:02,926 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 55 proven. 24 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-02-16 01:38:02,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:38:03,585 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 55 proven. 24 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-02-16 01:38:03,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:38:03,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199130948] [2023-02-16 01:38:03,586 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 01:38:03,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784743723] [2023-02-16 01:38:03,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784743723] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 01:38:03,586 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 01:38:03,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2023-02-16 01:38:03,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761636238] [2023-02-16 01:38:03,586 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 01:38:03,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-16 01:38:03,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:38:03,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-16 01:38:03,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2023-02-16 01:38:03,588 INFO L87 Difference]: Start difference. First operand 102 states and 122 transitions. Second operand has 16 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 8 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 6 states have call predecessors, (26), 8 states have call successors, (26) [2023-02-16 01:38:06,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-16 01:38:09,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-16 01:38:11,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-16 01:38:11,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:38:11,997 INFO L93 Difference]: Finished difference Result 124 states and 143 transitions. [2023-02-16 01:38:11,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-16 01:38:11,998 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 8 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 6 states have call predecessors, (26), 8 states have call successors, (26) Word has length 76 [2023-02-16 01:38:11,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:38:11,998 INFO L225 Difference]: With dead ends: 124 [2023-02-16 01:38:11,999 INFO L226 Difference]: Without dead ends: 118 [2023-02-16 01:38:11,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 136 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2023-02-16 01:38:12,000 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 24 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 68 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2023-02-16 01:38:12,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 66 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 359 Invalid, 3 Unknown, 0 Unchecked, 7.6s Time] [2023-02-16 01:38:12,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-02-16 01:38:12,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2023-02-16 01:38:12,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 67 states have (on average 1.044776119402985) internal successors, (70), 69 states have internal predecessors, (70), 32 states have call successors, (32), 18 states have call predecessors, (32), 18 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2023-02-16 01:38:12,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 133 transitions. [2023-02-16 01:38:12,042 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 133 transitions. Word has length 76 [2023-02-16 01:38:12,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:38:12,042 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 133 transitions. [2023-02-16 01:38:12,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 8 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 6 states have call predecessors, (26), 8 states have call successors, (26) [2023-02-16 01:38:12,043 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 133 transitions. [2023-02-16 01:38:12,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-02-16 01:38:12,045 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:38:12,045 INFO L195 NwaCegarLoop]: trace histogram [24, 23, 23, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:38:12,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-16 01:38:12,247 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,SelfDestructingSolverStorable9 [2023-02-16 01:38:12,248 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:38:12,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:38:12,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1712175254, now seen corresponding path program 1 times [2023-02-16 01:38:12,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:38:12,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877386359] [2023-02-16 01:38:12,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:38:12,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:38:12,260 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 01:38:12,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1082965790] [2023-02-16 01:38:12,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:38:12,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:38:12,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:38:12,266 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) [2023-02-16 01:38:12,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-16 01:38:12,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:38:12,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 37 conjunts are in the unsatisfiable core [2023-02-16 01:38:12,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:38:12,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1100 backedges. 45 proven. 109 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-02-16 01:38:12,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:38:14,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1100 backedges. 45 proven. 109 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-02-16 01:38:14,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:38:14,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877386359] [2023-02-16 01:38:14,023 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 01:38:14,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082965790] [2023-02-16 01:38:14,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082965790] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 01:38:14,023 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 01:38:14,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 18 [2023-02-16 01:38:14,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534060159] [2023-02-16 01:38:14,024 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 01:38:14,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-16 01:38:14,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:38:14,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-16 01:38:14,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2023-02-16 01:38:14,026 INFO L87 Difference]: Start difference. First operand 118 states and 133 transitions. Second operand has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 15 states have internal predecessors, (32), 10 states have call successors, (48), 3 states have call predecessors, (48), 2 states have return successors, (46), 8 states have call predecessors, (46), 10 states have call successors, (46) [2023-02-16 01:38:22,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-16 01:38:25,079 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-16 01:38:27,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-16 01:38:29,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-16 01:38:31,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-16 01:38:33,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-16 01:38:35,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-16 01:38:35,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:38:35,511 INFO L93 Difference]: Finished difference Result 125 states and 139 transitions. [2023-02-16 01:38:35,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-16 01:38:35,511 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 15 states have internal predecessors, (32), 10 states have call successors, (48), 3 states have call predecessors, (48), 2 states have return successors, (46), 8 states have call predecessors, (46), 10 states have call successors, (46) Word has length 129 [2023-02-16 01:38:35,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:38:35,512 INFO L225 Difference]: With dead ends: 125 [2023-02-16 01:38:35,513 INFO L226 Difference]: Without dead ends: 108 [2023-02-16 01:38:35,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 240 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2023-02-16 01:38:35,514 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 19 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 59 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time [2023-02-16 01:38:35,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 90 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 463 Invalid, 7 Unknown, 0 Unchecked, 16.3s Time] [2023-02-16 01:38:35,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-02-16 01:38:35,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2023-02-16 01:38:35,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 63 states have (on average 1.0158730158730158) internal successors, (64), 63 states have internal predecessors, (64), 28 states have call successors, (28), 17 states have call predecessors, (28), 16 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-02-16 01:38:35,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 119 transitions. [2023-02-16 01:38:35,553 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 119 transitions. Word has length 129 [2023-02-16 01:38:35,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:38:35,554 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 119 transitions. [2023-02-16 01:38:35,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 15 states have internal predecessors, (32), 10 states have call successors, (48), 3 states have call predecessors, (48), 2 states have return successors, (46), 8 states have call predecessors, (46), 10 states have call successors, (46) [2023-02-16 01:38:35,554 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 119 transitions. [2023-02-16 01:38:35,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-02-16 01:38:35,556 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:38:35,556 INFO L195 NwaCegarLoop]: trace histogram [28, 27, 27, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:38:35,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-16 01:38:35,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:38:35,762 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:38:35,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:38:35,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1019061416, now seen corresponding path program 2 times [2023-02-16 01:38:35,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:38:35,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531038640] [2023-02-16 01:38:35,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:38:35,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:38:35,772 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 01:38:35,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [151817676] [2023-02-16 01:38:35,773 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 01:38:35,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:38:35,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:38:35,774 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) [2023-02-16 01:38:35,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-16 01:38:35,851 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 01:38:35,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 01:38:35,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 47 conjunts are in the unsatisfiable core [2023-02-16 01:38:35,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:38:36,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1528 backedges. 128 proven. 74 refuted. 0 times theorem prover too weak. 1326 trivial. 0 not checked. [2023-02-16 01:38:36,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:38:36,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:38:36,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531038640] [2023-02-16 01:38:36,964 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 01:38:36,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151817676] [2023-02-16 01:38:36,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151817676] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 01:38:36,964 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-16 01:38:36,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-02-16 01:38:36,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451567915] [2023-02-16 01:38:36,965 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-16 01:38:36,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-16 01:38:36,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:38:36,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-16 01:38:36,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2023-02-16 01:38:36,966 INFO L87 Difference]: Start difference. First operand 108 states and 119 transitions. Second operand has 13 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 7 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 6 states have call predecessors, (27), 7 states have call successors, (27) [2023-02-16 01:38:37,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:38:37,541 INFO L93 Difference]: Finished difference Result 138 states and 152 transitions. [2023-02-16 01:38:37,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-16 01:38:37,541 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 7 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 6 states have call predecessors, (27), 7 states have call successors, (27) Word has length 151 [2023-02-16 01:38:37,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:38:37,542 INFO L225 Difference]: With dead ends: 138 [2023-02-16 01:38:37,542 INFO L226 Difference]: Without dead ends: 127 [2023-02-16 01:38:37,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 175 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2023-02-16 01:38:37,543 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 12 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-16 01:38:37,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 113 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-16 01:38:37,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-02-16 01:38:37,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2023-02-16 01:38:37,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 74 states have (on average 1.0135135135135136) internal successors, (75), 74 states have internal predecessors, (75), 33 states have call successors, (33), 20 states have call predecessors, (33), 19 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-02-16 01:38:37,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 140 transitions. [2023-02-16 01:38:37,586 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 140 transitions. Word has length 151 [2023-02-16 01:38:37,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:38:37,587 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 140 transitions. [2023-02-16 01:38:37,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 7 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 6 states have call predecessors, (27), 7 states have call successors, (27) [2023-02-16 01:38:37,588 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 140 transitions. [2023-02-16 01:38:37,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-02-16 01:38:37,589 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:38:37,590 INFO L195 NwaCegarLoop]: trace histogram [33, 32, 32, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:38:37,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-16 01:38:37,796 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,SelfDestructingSolverStorable11 [2023-02-16 01:38:37,796 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:38:37,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:38:37,796 INFO L85 PathProgramCache]: Analyzing trace with hash -965723090, now seen corresponding path program 3 times [2023-02-16 01:38:37,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:38:37,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528749541] [2023-02-16 01:38:37,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:38:37,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:38:37,808 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 01:38:37,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [909436660] [2023-02-16 01:38:37,808 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-16 01:38:37,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:38:37,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:38:37,810 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 01:38:37,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-16 01:38:38,469 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-02-16 01:38:38,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 01:38:38,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 41 conjunts are in the unsatisfiable core [2023-02-16 01:38:38,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:38:51,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2153 backedges. 321 proven. 69 refuted. 0 times theorem prover too weak. 1763 trivial. 0 not checked. [2023-02-16 01:38:51,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:38:55,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2153 backedges. 244 proven. 39 refuted. 0 times theorem prover too weak. 1870 trivial. 0 not checked. [2023-02-16 01:38:55,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:38:55,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528749541] [2023-02-16 01:38:55,127 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 01:38:55,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909436660] [2023-02-16 01:38:55,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909436660] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 01:38:55,128 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 01:38:55,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2023-02-16 01:38:55,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829432659] [2023-02-16 01:38:55,128 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 01:38:55,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-16 01:38:55,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:38:55,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-16 01:38:55,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=215, Unknown=1, NotChecked=0, Total=272 [2023-02-16 01:38:55,130 INFO L87 Difference]: Start difference. First operand 127 states and 140 transitions. Second operand has 17 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 13 states have internal predecessors, (28), 9 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (31), 8 states have call predecessors, (31), 9 states have call successors, (31) [2023-02-16 01:38:58,568 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-16 01:39:02,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-16 01:39:04,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-16 01:39:06,344 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-16 01:39:08,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-16 01:39:09,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-16 01:39:11,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-16 01:39:12,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:39:12,055 INFO L93 Difference]: Finished difference Result 135 states and 146 transitions. [2023-02-16 01:39:12,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-16 01:39:12,055 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 13 states have internal predecessors, (28), 9 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (31), 8 states have call predecessors, (31), 9 states have call successors, (31) Word has length 178 [2023-02-16 01:39:12,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:39:12,055 INFO L225 Difference]: With dead ends: 135 [2023-02-16 01:39:12,056 INFO L226 Difference]: Without dead ends: 0 [2023-02-16 01:39:12,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 337 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=91, Invalid=328, Unknown=1, NotChecked=0, Total=420 [2023-02-16 01:39:12,057 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 14 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 39 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.8s IncrementalHoareTripleChecker+Time [2023-02-16 01:39:12,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 75 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 239 Invalid, 5 Unknown, 0 Unchecked, 15.8s Time] [2023-02-16 01:39:12,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-16 01:39:12,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-16 01:39:12,058 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) [2023-02-16 01:39:12,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-16 01:39:12,058 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 178 [2023-02-16 01:39:12,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:39:12,059 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-16 01:39:12,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 13 states have internal predecessors, (28), 9 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (31), 8 states have call predecessors, (31), 9 states have call successors, (31) [2023-02-16 01:39:12,059 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-16 01:39:12,059 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-16 01:39:12,061 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-16 01:39:12,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-02-16 01:39:12,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-02-16 01:39:12,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-16 01:39:32,815 WARN L233 SmtUtils]: Spent 20.53s on a formula simplification. DAG size of input: 189 DAG size of output: 65 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-02-16 01:39:44,279 WARN L233 SmtUtils]: Spent 11.41s on a formula simplification. DAG size of input: 210 DAG size of output: 61 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-02-16 01:39:54,285 WARN L233 SmtUtils]: Spent 7.56s on a formula simplification. DAG size of input: 212 DAG size of output: 61 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-02-16 01:40:03,676 WARN L233 SmtUtils]: Spent 6.75s on a formula simplification. DAG size of input: 212 DAG size of output: 61 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-02-16 01:40:13,684 WARN L233 SmtUtils]: Spent 10.01s on a formula simplification. DAG size of input: 189 DAG size of output: 65 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-02-16 01:40:20,182 WARN L233 SmtUtils]: Spent 6.50s on a formula simplification. DAG size of input: 151 DAG size of output: 44 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-02-16 01:40:27,875 WARN L233 SmtUtils]: Spent 7.69s on a formula simplification. DAG size of input: 189 DAG size of output: 65 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-02-16 01:40:40,988 WARN L233 SmtUtils]: Spent 13.11s on a formula simplification. DAG size of input: 212 DAG size of output: 61 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-02-16 01:40:40,991 INFO L895 garLoopResultBuilder]: At program point L33(line 33) the Hoare annotation is: (and (or (<= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~a~0#1|) (= (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) (+ (* 12 |ULTIMATE.start_main_~x~0#1|) (* 6 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~a~0#1|))))) (= |ULTIMATE.start_main_~z~0#1| (+ (* 6 |ULTIMATE.start_main_~n~0#1|) 6)) (= |ULTIMATE.start_main_~y~0#1| (+ (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (* 3 |ULTIMATE.start_main_~n~0#1|) 1)) (or (and (<= 0 (+ |ULTIMATE.start_main_~a~0#1| (* 65536 (div (+ (- |ULTIMATE.start_main_~a~0#1|) (- 1)) 65536)) 32768)) (<= 0 (+ |ULTIMATE.start_main_~a~0#1| 65536)) (< |ULTIMATE.start_main_~a~0#1| 0)) (and (<= (mod |ULTIMATE.start_main_~a~0#1| 65536) 32767) (<= 0 |ULTIMATE.start_main_~a~0#1|) (< |ULTIMATE.start_main_~a~0#1| 65536))) (= |ULTIMATE.start_main_~x~0#1| (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|))) [2023-02-16 01:40:40,991 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-16 01:40:40,991 INFO L895 garLoopResultBuilder]: At program point L33-1(line 33) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|))) (and (or (<= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~a~0#1|) (= .cse0 (+ (* 12 |ULTIMATE.start_main_~x~0#1|) (* 6 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~a~0#1|))))) (= |ULTIMATE.start_main_~z~0#1| (+ (* 6 |ULTIMATE.start_main_~n~0#1|) 6)) (= (+ (* 10 |ULTIMATE.start_main_~y~0#1|) (* 18 |ULTIMATE.start_main_~x~0#1|) (* 3 .cse0) 10) (+ (* 2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* 3 |ULTIMATE.start_main_~z~0#1|))) (= (+ (* 12 |ULTIMATE.start_main_~y~0#1|) (* 6 |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|) 12)) (or (and (<= 0 (+ |ULTIMATE.start_main_~a~0#1| (* 65536 (div (+ (- |ULTIMATE.start_main_~a~0#1|) (- 1)) 65536)) 32768)) (<= 0 (+ |ULTIMATE.start_main_~a~0#1| 65536)) (< |ULTIMATE.start_main_~a~0#1| 0)) (and (<= (mod |ULTIMATE.start_main_~a~0#1| 65536) 32767) (<= 0 |ULTIMATE.start_main_~a~0#1|) (< |ULTIMATE.start_main_~a~0#1| 65536))) (= |ULTIMATE.start_main_~x~0#1| (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)))) [2023-02-16 01:40:40,991 INFO L899 garLoopResultBuilder]: For program point L52(line 52) no Hoare annotation was computed. [2023-02-16 01:40:40,991 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (and (= |ULTIMATE.start_main_~z~0#1| (+ (* 6 |ULTIMATE.start_main_~n~0#1|) 6)) (= |ULTIMATE.start_main_~y~0#1| (+ (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (* 3 |ULTIMATE.start_main_~n~0#1|) 1)) (= |ULTIMATE.start_main_~x~0#1| (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|))) [2023-02-16 01:40:40,991 INFO L895 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~z~0#1| (+ (* 6 |ULTIMATE.start_main_~n~0#1|) 6)))) (or (let ((.cse1 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|))) (and .cse0 (= (+ (* 10 |ULTIMATE.start_main_~y~0#1|) (* 18 |ULTIMATE.start_main_~x~0#1|) (* 3 .cse1) 10) (+ (* 2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* 3 |ULTIMATE.start_main_~z~0#1|))) (= .cse1 (+ (* 12 |ULTIMATE.start_main_~x~0#1|) (* 6 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~a~0#1|)))) (= (+ (* 12 |ULTIMATE.start_main_~y~0#1|) (* 6 |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|) 12)) (or (and (<= 0 (+ |ULTIMATE.start_main_~a~0#1| (* 65536 (div (+ (- |ULTIMATE.start_main_~a~0#1|) (- 1)) 65536)) 32768)) (<= 0 (+ |ULTIMATE.start_main_~a~0#1| 65536)) (< |ULTIMATE.start_main_~a~0#1| 0)) (and (<= (mod |ULTIMATE.start_main_~a~0#1| 65536) 32767) (<= 0 |ULTIMATE.start_main_~a~0#1|) (< |ULTIMATE.start_main_~a~0#1| 65536))) (= |ULTIMATE.start_main_~x~0#1| (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)))) (and (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~x~0#1| 0) .cse0 (= |ULTIMATE.start_main_~z~0#1| 6)))) [2023-02-16 01:40:40,991 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-16 01:40:40,992 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 22 55) the Hoare annotation is: true [2023-02-16 01:40:40,992 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|))) (and (or (<= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~a~0#1|) (= .cse0 (+ (* 12 |ULTIMATE.start_main_~x~0#1|) (* 6 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~a~0#1|))))) (= |ULTIMATE.start_main_~z~0#1| (+ (* 6 |ULTIMATE.start_main_~n~0#1|) 6)) (= (+ (* 10 |ULTIMATE.start_main_~y~0#1|) (* 18 |ULTIMATE.start_main_~x~0#1|) (* 3 .cse0) 10) (+ (* 2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* 3 |ULTIMATE.start_main_~z~0#1|))) (= (+ (* 12 |ULTIMATE.start_main_~y~0#1|) (* 6 |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|) 12)) (or (and (<= 0 (+ |ULTIMATE.start_main_~a~0#1| (* 65536 (div (+ (- |ULTIMATE.start_main_~a~0#1|) (- 1)) 65536)) 32768)) (<= 0 (+ |ULTIMATE.start_main_~a~0#1| 65536)) (< |ULTIMATE.start_main_~a~0#1| 0)) (and (<= (mod |ULTIMATE.start_main_~a~0#1| 65536) 32767) (<= 0 |ULTIMATE.start_main_~a~0#1|) (< |ULTIMATE.start_main_~a~0#1| 65536))) (= |ULTIMATE.start_main_~x~0#1| (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)))) [2023-02-16 01:40:40,992 INFO L895 garLoopResultBuilder]: At program point L34(line 34) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|))) (and (or (<= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~a~0#1|) (= .cse0 (+ (* 12 |ULTIMATE.start_main_~x~0#1|) (* 6 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~a~0#1|))))) (= |ULTIMATE.start_main_~z~0#1| (+ (* 6 |ULTIMATE.start_main_~n~0#1|) 6)) (= (+ (* 10 |ULTIMATE.start_main_~y~0#1|) (* 18 |ULTIMATE.start_main_~x~0#1|) (* 3 .cse0) 10) (+ (* 2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* 3 |ULTIMATE.start_main_~z~0#1|))) (= (+ (* 12 |ULTIMATE.start_main_~y~0#1|) (* 6 |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|) 12)) (or (and (<= 0 (+ |ULTIMATE.start_main_~a~0#1| (* 65536 (div (+ (- |ULTIMATE.start_main_~a~0#1|) (- 1)) 65536)) 32768)) (<= 0 (+ |ULTIMATE.start_main_~a~0#1| 65536)) (< |ULTIMATE.start_main_~a~0#1| 0)) (and (<= (mod |ULTIMATE.start_main_~a~0#1| 65536) 32767) (<= 0 |ULTIMATE.start_main_~a~0#1|) (< |ULTIMATE.start_main_~a~0#1| 65536))) (= |ULTIMATE.start_main_~x~0#1| (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)))) [2023-02-16 01:40:40,992 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-16 01:40:40,992 INFO L895 garLoopResultBuilder]: At program point L32-2(lines 32 45) the Hoare annotation is: (and (or (<= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~a~0#1|) (= (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) (+ (* 12 |ULTIMATE.start_main_~x~0#1|) (* 6 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~a~0#1|))))) (= |ULTIMATE.start_main_~z~0#1| (+ (* 6 |ULTIMATE.start_main_~n~0#1|) 6)) (= |ULTIMATE.start_main_~y~0#1| (+ (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (* 3 |ULTIMATE.start_main_~n~0#1|) 1)) (or (and (<= 0 (+ |ULTIMATE.start_main_~a~0#1| (* 65536 (div (+ (- |ULTIMATE.start_main_~a~0#1|) (- 1)) 65536)) 32768)) (<= 0 (+ |ULTIMATE.start_main_~a~0#1| 65536)) (< |ULTIMATE.start_main_~a~0#1| 0)) (and (<= (mod |ULTIMATE.start_main_~a~0#1| 65536) 32767) (<= 0 |ULTIMATE.start_main_~a~0#1|) (< |ULTIMATE.start_main_~a~0#1| 65536))) (= |ULTIMATE.start_main_~x~0#1| (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|))) [2023-02-16 01:40:40,992 INFO L895 garLoopResultBuilder]: At program point L32-3(lines 32 45) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~z~0#1| (+ (* 6 |ULTIMATE.start_main_~n~0#1|) 6)))) (or (let ((.cse1 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|))) (and .cse0 (= (+ (* 10 |ULTIMATE.start_main_~y~0#1|) (* 18 |ULTIMATE.start_main_~x~0#1|) (* 3 .cse1) 10) (+ (* 2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* 3 |ULTIMATE.start_main_~z~0#1|))) (= .cse1 (+ (* 12 |ULTIMATE.start_main_~x~0#1|) (* 6 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~a~0#1|)))) (= (+ (* 12 |ULTIMATE.start_main_~y~0#1|) (* 6 |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|) 12)) (or (and (<= 0 (+ |ULTIMATE.start_main_~a~0#1| (* 65536 (div (+ (- |ULTIMATE.start_main_~a~0#1|) (- 1)) 65536)) 32768)) (<= 0 (+ |ULTIMATE.start_main_~a~0#1| 65536)) (< |ULTIMATE.start_main_~a~0#1| 0)) (and (<= (mod |ULTIMATE.start_main_~a~0#1| 65536) 32767) (<= 0 |ULTIMATE.start_main_~a~0#1|) (< |ULTIMATE.start_main_~a~0#1| 65536))) (= |ULTIMATE.start_main_~x~0#1| (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)))) (and (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~x~0#1| 0) .cse0 (= |ULTIMATE.start_main_~z~0#1| 6)))) [2023-02-16 01:40:40,993 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-16 01:40:40,993 INFO L895 garLoopResultBuilder]: At program point L51(line 51) the Hoare annotation is: (and (= |ULTIMATE.start_main_~z~0#1| (+ (* 6 |ULTIMATE.start_main_~n~0#1|) 6)) (= |ULTIMATE.start_main_~y~0#1| (+ (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (* 3 |ULTIMATE.start_main_~n~0#1|) 1)) (= |ULTIMATE.start_main_~x~0#1| (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|))) [2023-02-16 01:40:40,993 INFO L895 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~z~0#1| (+ (* 6 |ULTIMATE.start_main_~n~0#1|) 6))) (.cse1 (= |ULTIMATE.start_main_~x~0#1| (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)))) (or (and .cse0 (= |ULTIMATE.start_main_~y~0#1| 7) .cse1 (= |ULTIMATE.start_main_~x~0#1| 1)) (let ((.cse2 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|))) (and .cse0 (= (+ (* 10 |ULTIMATE.start_main_~y~0#1|) (* 18 |ULTIMATE.start_main_~x~0#1|) (* 3 .cse2) 10) (+ (* 2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* 3 |ULTIMATE.start_main_~z~0#1|))) (= .cse2 (+ (* 12 |ULTIMATE.start_main_~x~0#1|) (* 6 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~a~0#1|)))) (= (+ (* 12 |ULTIMATE.start_main_~y~0#1|) (* 6 |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|) 12)) .cse1)))) [2023-02-16 01:40:40,993 INFO L895 garLoopResultBuilder]: At program point L47(line 47) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~z~0#1| (+ (* 6 |ULTIMATE.start_main_~n~0#1|) 6)))) (or (let ((.cse1 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|))) (and .cse0 (= (+ (* 10 |ULTIMATE.start_main_~y~0#1|) (* 18 |ULTIMATE.start_main_~x~0#1|) (* 3 .cse1) 10) (+ (* 2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* 3 |ULTIMATE.start_main_~z~0#1|))) (= .cse1 (+ (* 12 |ULTIMATE.start_main_~x~0#1|) (* 6 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~a~0#1|)))) (= (+ (* 12 |ULTIMATE.start_main_~y~0#1|) (* 6 |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|) 12)) (or (and (<= 0 (+ |ULTIMATE.start_main_~a~0#1| (* 65536 (div (+ (- |ULTIMATE.start_main_~a~0#1|) (- 1)) 65536)) 32768)) (<= 0 (+ |ULTIMATE.start_main_~a~0#1| 65536)) (< |ULTIMATE.start_main_~a~0#1| 0)) (and (<= (mod |ULTIMATE.start_main_~a~0#1| 65536) 32767) (<= 0 |ULTIMATE.start_main_~a~0#1|) (< |ULTIMATE.start_main_~a~0#1| 65536))) (= |ULTIMATE.start_main_~x~0#1| (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)))) (and (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~x~0#1| 0) .cse0 (= |ULTIMATE.start_main_~z~0#1| 6)))) [2023-02-16 01:40:40,993 INFO L899 garLoopResultBuilder]: For program point L37(lines 32 45) no Hoare annotation was computed. [2023-02-16 01:40:40,993 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|))) (and (or (<= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~a~0#1|) (= .cse0 (+ (* 12 |ULTIMATE.start_main_~x~0#1|) (* 6 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~a~0#1|))))) (= |ULTIMATE.start_main_~z~0#1| (+ (* 6 |ULTIMATE.start_main_~n~0#1|) 6)) (= (+ (* 10 |ULTIMATE.start_main_~y~0#1|) (* 18 |ULTIMATE.start_main_~x~0#1|) (* 3 .cse0) 10) (+ (* 2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* 3 |ULTIMATE.start_main_~z~0#1|))) (= (+ (* 12 |ULTIMATE.start_main_~y~0#1|) (* 6 |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|) 12)) (or (and (<= 0 (+ |ULTIMATE.start_main_~a~0#1| (* 65536 (div (+ (- |ULTIMATE.start_main_~a~0#1|) (- 1)) 65536)) 32768)) (<= 0 (+ |ULTIMATE.start_main_~a~0#1| 65536)) (< |ULTIMATE.start_main_~a~0#1| 0)) (and (<= (mod |ULTIMATE.start_main_~a~0#1| 65536) 32767) (<= 0 |ULTIMATE.start_main_~a~0#1|) (< |ULTIMATE.start_main_~a~0#1| 65536))) (= |ULTIMATE.start_main_~x~0#1| (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)))) [2023-02-16 01:40:40,994 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2023-02-16 01:40:40,994 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2023-02-16 01:40:40,994 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2023-02-16 01:40:40,994 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2023-02-16 01:40:40,994 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 14 20) the Hoare annotation is: true [2023-02-16 01:40:40,994 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2023-02-16 01:40:40,997 INFO L445 BasicCegarLoop]: Path program histogram: [3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:40:40,998 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-16 01:40:41,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.02 01:40:41 BoogieIcfgContainer [2023-02-16 01:40:41,012 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-16 01:40:41,012 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-16 01:40:41,012 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-16 01:40:41,013 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-16 01:40:41,013 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 01:37:50" (3/4) ... [2023-02-16 01:40:41,016 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-16 01:40:41,020 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-02-16 01:40:41,026 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2023-02-16 01:40:41,026 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-16 01:40:41,026 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-16 01:40:41,026 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-16 01:40:41,051 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-16 01:40:41,052 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-16 01:40:41,052 INFO L158 Benchmark]: Toolchain (without parser) took 171126.21ms. Allocated memory was 146.8MB in the beginning and 176.2MB in the end (delta: 29.4MB). Free memory was 100.0MB in the beginning and 137.4MB in the end (delta: -37.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 01:40:41,052 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 117.4MB. Free memory was 90.5MB in the beginning and 90.4MB in the end (delta: 28.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 01:40:41,053 INFO L158 Benchmark]: CACSL2BoogieTranslator took 264.51ms. Allocated memory is still 146.8MB. Free memory was 99.5MB in the beginning and 88.9MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-16 01:40:41,053 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.84ms. Allocated memory is still 146.8MB. Free memory was 88.9MB in the beginning and 87.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 01:40:41,053 INFO L158 Benchmark]: Boogie Preprocessor took 32.77ms. Allocated memory is still 146.8MB. Free memory was 87.5MB in the beginning and 86.4MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-16 01:40:41,054 INFO L158 Benchmark]: RCFGBuilder took 325.81ms. Allocated memory is still 146.8MB. Free memory was 86.0MB in the beginning and 75.1MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-16 01:40:41,054 INFO L158 Benchmark]: TraceAbstraction took 170416.23ms. Allocated memory was 146.8MB in the beginning and 176.2MB in the end (delta: 29.4MB). Free memory was 74.4MB in the beginning and 140.6MB in the end (delta: -66.2MB). Peak memory consumption was 64.4MB. Max. memory is 16.1GB. [2023-02-16 01:40:41,054 INFO L158 Benchmark]: Witness Printer took 39.59ms. Allocated memory is still 176.2MB. Free memory was 140.6MB in the beginning and 137.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-16 01:40:41,055 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 117.4MB. Free memory was 90.5MB in the beginning and 90.4MB in the end (delta: 28.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 264.51ms. Allocated memory is still 146.8MB. Free memory was 99.5MB in the beginning and 88.9MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.84ms. Allocated memory is still 146.8MB. Free memory was 88.9MB in the beginning and 87.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 32.77ms. Allocated memory is still 146.8MB. Free memory was 87.5MB in the beginning and 86.4MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 325.81ms. Allocated memory is still 146.8MB. Free memory was 86.0MB in the beginning and 75.1MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 170416.23ms. Allocated memory was 146.8MB in the beginning and 176.2MB in the end (delta: 29.4MB). Free memory was 74.4MB in the beginning and 140.6MB in the end (delta: -66.2MB). Peak memory consumption was 64.4MB. Max. memory is 16.1GB. * Witness Printer took 39.59ms. Allocated memory is still 176.2MB. Free memory was 140.6MB in the beginning and 137.4MB 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, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 170.3s, OverallIterations: 13, TraceHistogramMax: 33, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 53.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 88.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 16 mSolverCounterUnknown, 304 SdHoareTripleChecker+Valid, 45.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 206 mSDsluCounter, 792 SdHoareTripleChecker+Invalid, 44.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 483 mSDsCounter, 414 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3757 IncrementalHoareTripleChecker+Invalid, 4187 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 414 mSolverCounterUnsat, 309 mSDtfsCounter, 3757 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1559 GetRequests, 1363 SyntacticMatches, 14 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 19.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=127occurred in iteration=12, InterpolantAutomatonStates: 125, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 13 MinimizatonAttempts, 5 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 82 PreInvPairs, 147 NumberOfFragments, 1050 HoareAnnotationTreeSize, 82 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 14 FomulaSimplificationsInter, 12749 FormulaSimplificationTreeSizeReductionInter, 88.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 23.7s InterpolantComputationTime, 832 NumberOfCodeBlocks, 666 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 1476 ConstructedInterpolants, 0 QuantifiedInterpolants, 9521 SizeOfPredicates, 49 NumberOfNonLiveVariables, 1622 ConjunctsInSsa, 313 ConjunctsInUnsatCore, 23 InterpolantComputations, 2 PerfectInterpolantSequences, 9698/10428 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: 32]: Loop Invariant Derived loop invariant: ((((n <= a || x * z == 12 * x + 6 * (x * a)) && z == 6 * n + 6) && y == 3 * (n * n) + 3 * n + 1) && (((0 <= a + 65536 * ((-a + -1) / 65536) + 32768 && 0 <= a + 65536) && a < 0) || ((a % 65536 <= 32767 && 0 <= a) && a < 65536))) && x == n * n * n - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2023-02-16 01:40:41,082 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