./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/ncomp.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e8d55036 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-fpi/ncomp.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 c3d1ff002f6e6cf179cc6204a129c133a3beda704ea9fff27ad69a10f5c1f33d --- Real Ultimate output --- This is Ultimate 0.2.2-?-e8d5503-m [2023-02-15 19:05:44,254 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 19:05:44,256 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 19:05:44,285 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 19:05:44,286 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 19:05:44,288 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 19:05:44,289 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 19:05:44,291 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 19:05:44,293 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 19:05:44,297 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 19:05:44,298 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 19:05:44,300 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 19:05:44,300 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 19:05:44,302 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 19:05:44,302 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 19:05:44,304 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 19:05:44,304 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 19:05:44,305 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 19:05:44,306 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 19:05:44,310 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 19:05:44,310 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 19:05:44,311 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 19:05:44,312 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 19:05:44,312 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 19:05:44,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 19:05:44,318 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 19:05:44,318 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 19:05:44,319 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 19:05:44,320 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 19:05:44,320 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 19:05:44,320 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 19:05:44,321 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 19:05:44,322 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 19:05:44,323 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 19:05:44,324 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 19:05:44,324 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 19:05:44,325 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 19:05:44,325 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 19:05:44,325 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 19:05:44,326 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 19:05:44,326 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 19:05:44,327 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 19:05:44,349 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 19:05:44,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 19:05:44,349 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 19:05:44,349 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 19:05:44,350 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 19:05:44,350 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 19:05:44,351 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 19:05:44,351 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 19:05:44,351 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 19:05:44,351 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 19:05:44,352 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 19:05:44,352 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 19:05:44,352 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 19:05:44,352 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 19:05:44,352 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 19:05:44,352 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 19:05:44,352 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 19:05:44,353 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 19:05:44,353 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 19:05:44,353 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 19:05:44,353 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 19:05:44,353 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 19:05:44,353 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 19:05:44,353 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 19:05:44,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 19:05:44,354 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 19:05:44,354 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 19:05:44,354 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 19:05:44,354 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 19:05:44,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 19:05:44,354 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 19:05:44,355 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 19:05:44,355 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 19:05:44,355 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 19:05:44,355 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 19:05:44,355 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3d1ff002f6e6cf179cc6204a129c133a3beda704ea9fff27ad69a10f5c1f33d [2023-02-15 19:05:44,512 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 19:05:44,531 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 19:05:44,533 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 19:05:44,534 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 19:05:44,534 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 19:05:44,535 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/ncomp.c [2023-02-15 19:05:45,496 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 19:05:45,707 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 19:05:45,707 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ncomp.c [2023-02-15 19:05:45,711 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/800b5d190/723919ec3cc84a82bb44979b96562eed/FLAGe53c61598 [2023-02-15 19:05:45,720 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/800b5d190/723919ec3cc84a82bb44979b96562eed [2023-02-15 19:05:45,722 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 19:05:45,722 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 19:05:45,723 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 19:05:45,723 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 19:05:45,725 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 19:05:45,726 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 07:05:45" (1/1) ... [2023-02-15 19:05:45,726 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bb6ca79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:05:45, skipping insertion in model container [2023-02-15 19:05:45,727 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 07:05:45" (1/1) ... [2023-02-15 19:05:45,731 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 19:05:45,740 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 19:05:45,819 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ncomp.c[588,601] [2023-02-15 19:05:45,832 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 19:05:45,837 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 19:05:45,845 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ncomp.c[588,601] [2023-02-15 19:05:45,850 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 19:05:45,858 INFO L208 MainTranslator]: Completed translation [2023-02-15 19:05:45,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:05:45 WrapperNode [2023-02-15 19:05:45,859 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 19:05:45,860 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 19:05:45,860 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 19:05:45,860 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 19:05:45,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:05:45" (1/1) ... [2023-02-15 19:05:45,869 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:05:45" (1/1) ... [2023-02-15 19:05:45,882 INFO L138 Inliner]: procedures = 16, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 97 [2023-02-15 19:05:45,883 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 19:05:45,883 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 19:05:45,884 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 19:05:45,884 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 19:05:45,889 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:05:45" (1/1) ... [2023-02-15 19:05:45,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:05:45" (1/1) ... [2023-02-15 19:05:45,891 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:05:45" (1/1) ... [2023-02-15 19:05:45,891 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:05:45" (1/1) ... [2023-02-15 19:05:45,895 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:05:45" (1/1) ... [2023-02-15 19:05:45,897 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:05:45" (1/1) ... [2023-02-15 19:05:45,897 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:05:45" (1/1) ... [2023-02-15 19:05:45,898 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:05:45" (1/1) ... [2023-02-15 19:05:45,899 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 19:05:45,900 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 19:05:45,900 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 19:05:45,900 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 19:05:45,901 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:05:45" (1/1) ... [2023-02-15 19:05:45,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 19:05:45,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:05:45,920 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-15 19:05:45,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-15 19:05:45,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 19:05:45,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 19:05:45,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-15 19:05:45,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-15 19:05:45,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 19:05:45,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 19:05:45,943 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-15 19:05:45,986 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 19:05:45,987 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 19:05:46,143 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 19:05:46,147 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 19:05:46,147 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2023-02-15 19:05:46,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 07:05:46 BoogieIcfgContainer [2023-02-15 19:05:46,148 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 19:05:46,149 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 19:05:46,149 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 19:05:46,151 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 19:05:46,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 07:05:45" (1/3) ... [2023-02-15 19:05:46,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c50824 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 07:05:46, skipping insertion in model container [2023-02-15 19:05:46,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:05:45" (2/3) ... [2023-02-15 19:05:46,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c50824 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 07:05:46, skipping insertion in model container [2023-02-15 19:05:46,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 07:05:46" (3/3) ... [2023-02-15 19:05:46,153 INFO L112 eAbstractionObserver]: Analyzing ICFG ncomp.c [2023-02-15 19:05:46,163 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 19:05:46,164 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 19:05:46,190 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 19:05:46,194 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;@a0e4937, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 19:05:46,194 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 19:05:46,197 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 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) [2023-02-15 19:05:46,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-15 19:05:46,200 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:05:46,201 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:05:46,201 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:05:46,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:05:46,205 INFO L85 PathProgramCache]: Analyzing trace with hash -592971038, now seen corresponding path program 1 times [2023-02-15 19:05:46,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:05:46,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250796585] [2023-02-15 19:05:46,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:05:46,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:05:46,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:05:46,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:05:46,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250796585] [2023-02-15 19:05:46,307 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-15 19:05:46,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685221046] [2023-02-15 19:05:46,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:05:46,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:05:46,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:05:46,310 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 19:05:46,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 19:05:46,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:05:46,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-15 19:05:46,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 19:05:46,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:05:46,435 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 19:05:46,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685221046] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:05:46,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:05:46,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 19:05:46,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818204262] [2023-02-15 19:05:46,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:05:46,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-15 19:05:46,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:05:46,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-15 19:05:46,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 19:05:46,463 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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) [2023-02-15 19:05:46,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:05:46,474 INFO L93 Difference]: Finished difference Result 44 states and 62 transitions. [2023-02-15 19:05:46,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-15 19:05:46,475 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-02-15 19:05:46,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:05:46,480 INFO L225 Difference]: With dead ends: 44 [2023-02-15 19:05:46,480 INFO L226 Difference]: Without dead ends: 20 [2023-02-15 19:05:46,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 19:05:46,484 INFO L413 NwaCegarLoop]: 28 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, 28 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 [2023-02-15 19:05:46,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:05:46,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-02-15 19:05:46,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-02-15 19:05:46,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 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) [2023-02-15 19:05:46,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2023-02-15 19:05:46,521 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 14 [2023-02-15 19:05:46,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:05:46,521 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2023-02-15 19:05:46,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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) [2023-02-15 19:05:46,522 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2023-02-15 19:05:46,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-15 19:05:46,522 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:05:46,522 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:05:46,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-15 19:05:46,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-02-15 19:05:46,728 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:05:46,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:05:46,729 INFO L85 PathProgramCache]: Analyzing trace with hash 108093540, now seen corresponding path program 1 times [2023-02-15 19:05:46,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:05:46,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390341462] [2023-02-15 19:05:46,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:05:46,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:05:46,772 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 19:05:46,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [141098032] [2023-02-15 19:05:46,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:05:46,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:05:46,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:05:46,775 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 19:05:46,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 19:05:46,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:05:46,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-15 19:05:46,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 19:05:46,997 INFO L321 Elim1Store]: treesize reduction 117, result has 35.4 percent of original size [2023-02-15 19:05:46,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 92 treesize of output 229 [2023-02-15 19:05:47,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 19:05:47,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 19:05:47,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 19:05:47,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 19:05:47,568 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 47 [2023-02-15 19:05:47,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-02-15 19:05:47,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 19:05:47,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:05:47,646 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 19:05:47,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:05:47,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390341462] [2023-02-15 19:05:47,648 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 19:05:47,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141098032] [2023-02-15 19:05:47,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141098032] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:05:47,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:05:47,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 19:05:47,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831429461] [2023-02-15 19:05:47,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:05:47,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 19:05:47,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:05:47,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 19:05:47,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-15 19:05:47,651 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2023-02-15 19:05:47,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:05:47,724 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2023-02-15 19:05:47,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 19:05:47,724 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-02-15 19:05:47,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:05:47,726 INFO L225 Difference]: With dead ends: 39 [2023-02-15 19:05:47,726 INFO L226 Difference]: Without dead ends: 37 [2023-02-15 19:05:47,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-02-15 19:05:47,730 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 14 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:05:47,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 54 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:05:47,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-02-15 19:05:47,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 28. [2023-02-15 19:05:47,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 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) [2023-02-15 19:05:47,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2023-02-15 19:05:47,740 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 14 [2023-02-15 19:05:47,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:05:47,740 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2023-02-15 19:05:47,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2023-02-15 19:05:47,741 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2023-02-15 19:05:47,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-15 19:05:47,742 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:05:47,742 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:05:47,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-15 19:05:47,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-02-15 19:05:47,947 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:05:47,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:05:47,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1850906398, now seen corresponding path program 1 times [2023-02-15 19:05:47,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:05:47,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282890732] [2023-02-15 19:05:47,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:05:47,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:05:47,979 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 19:05:47,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1872535168] [2023-02-15 19:05:47,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:05:47,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:05:47,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:05:47,997 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 19:05:47,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-15 19:05:48,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:05:48,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 19:05:48,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 19:05:48,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:05:48,072 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 19:05:48,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:05:48,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282890732] [2023-02-15 19:05:48,072 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 19:05:48,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872535168] [2023-02-15 19:05:48,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872535168] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:05:48,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:05:48,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 19:05:48,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593115746] [2023-02-15 19:05:48,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:05:48,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 19:05:48,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:05:48,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 19:05:48,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-15 19:05:48,074 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2023-02-15 19:05:48,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:05:48,135 INFO L93 Difference]: Finished difference Result 62 states and 73 transitions. [2023-02-15 19:05:48,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 19:05:48,135 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-02-15 19:05:48,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:05:48,136 INFO L225 Difference]: With dead ends: 62 [2023-02-15 19:05:48,136 INFO L226 Difference]: Without dead ends: 50 [2023-02-15 19:05:48,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-02-15 19:05:48,137 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 29 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:05:48,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 32 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:05:48,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-02-15 19:05:48,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 31. [2023-02-15 19:05:48,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2) internal successors, (36), 30 states have internal predecessors, (36), 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) [2023-02-15 19:05:48,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2023-02-15 19:05:48,141 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 16 [2023-02-15 19:05:48,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:05:48,141 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2023-02-15 19:05:48,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2023-02-15 19:05:48,142 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2023-02-15 19:05:48,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-15 19:05:48,142 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:05:48,142 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:05:48,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-15 19:05:48,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:05:48,347 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:05:48,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:05:48,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1060218526, now seen corresponding path program 1 times [2023-02-15 19:05:48,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:05:48,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893481744] [2023-02-15 19:05:48,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:05:48,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:05:48,386 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 19:05:48,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [527491833] [2023-02-15 19:05:48,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:05:48,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:05:48,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:05:48,401 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 19:05:48,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-15 19:05:48,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:05:48,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 19:05:48,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 19:05:48,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:05:48,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 19:05:48,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:05:48,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:05:48,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893481744] [2023-02-15 19:05:48,540 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 19:05:48,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527491833] [2023-02-15 19:05:48,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527491833] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 19:05:48,541 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 19:05:48,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2023-02-15 19:05:48,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974468128] [2023-02-15 19:05:48,541 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 19:05:48,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 19:05:48,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:05:48,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 19:05:48,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-15 19:05:48,542 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2023-02-15 19:05:48,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:05:48,621 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2023-02-15 19:05:48,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-15 19:05:48,621 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-02-15 19:05:48,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:05:48,621 INFO L225 Difference]: With dead ends: 53 [2023-02-15 19:05:48,621 INFO L226 Difference]: Without dead ends: 44 [2023-02-15 19:05:48,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-02-15 19:05:48,622 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 43 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 19:05:48,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 44 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 19:05:48,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-02-15 19:05:48,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 30. [2023-02-15 19:05:48,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 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) [2023-02-15 19:05:48,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2023-02-15 19:05:48,626 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 16 [2023-02-15 19:05:48,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:05:48,626 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2023-02-15 19:05:48,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2023-02-15 19:05:48,626 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2023-02-15 19:05:48,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-15 19:05:48,626 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:05:48,626 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:05:48,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-15 19:05:48,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:05:48,827 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:05:48,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:05:48,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1120615462, now seen corresponding path program 1 times [2023-02-15 19:05:48,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:05:48,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416501308] [2023-02-15 19:05:48,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:05:48,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:05:48,840 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 19:05:48,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [992850512] [2023-02-15 19:05:48,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:05:48,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:05:48,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:05:48,845 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 19:05:48,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-15 19:05:48,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:05:48,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-15 19:05:48,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 19:05:48,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:05:48,948 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 19:05:48,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:05:48,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416501308] [2023-02-15 19:05:48,950 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 19:05:48,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992850512] [2023-02-15 19:05:48,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992850512] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:05:48,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:05:48,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-15 19:05:48,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618442123] [2023-02-15 19:05:48,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:05:48,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 19:05:48,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:05:48,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 19:05:48,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-02-15 19:05:48,954 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2023-02-15 19:05:49,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:05:49,020 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2023-02-15 19:05:49,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-15 19:05:49,021 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-02-15 19:05:49,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:05:49,021 INFO L225 Difference]: With dead ends: 48 [2023-02-15 19:05:49,021 INFO L226 Difference]: Without dead ends: 32 [2023-02-15 19:05:49,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-02-15 19:05:49,022 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 18 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 19:05:49,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 34 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 19:05:49,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-02-15 19:05:49,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2023-02-15 19:05:49,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:05:49,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2023-02-15 19:05:49,024 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 18 [2023-02-15 19:05:49,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:05:49,025 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2023-02-15 19:05:49,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2023-02-15 19:05:49,025 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2023-02-15 19:05:49,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-15 19:05:49,025 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:05:49,025 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:05:49,032 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-02-15 19:05:49,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:05:49,231 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:05:49,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:05:49,231 INFO L85 PathProgramCache]: Analyzing trace with hash 615941150, now seen corresponding path program 1 times [2023-02-15 19:05:49,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:05:49,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070136412] [2023-02-15 19:05:49,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:05:49,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:05:49,256 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 19:05:49,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1157666256] [2023-02-15 19:05:49,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:05:49,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:05:49,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:05:49,258 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) [2023-02-15 19:05:49,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-15 19:05:49,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:05:49,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 46 conjunts are in the unsatisfiable core [2023-02-15 19:05:49,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 19:05:49,453 INFO L321 Elim1Store]: treesize reduction 117, result has 35.4 percent of original size [2023-02-15 19:05:49,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 92 treesize of output 229 [2023-02-15 19:05:49,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 19:05:49,479 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 19:05:49,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 19:05:49,529 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:05:49,529 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:05:49,531 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:05:49,531 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:05:49,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 69 [2023-02-15 19:05:49,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 19:05:49,580 INFO L321 Elim1Store]: treesize reduction 57, result has 12.3 percent of original size [2023-02-15 19:05:49,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 10 case distinctions, treesize of input 107 treesize of output 104 [2023-02-15 19:05:49,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 19:05:49,627 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2023-02-15 19:05:49,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 16 [2023-02-15 19:05:49,630 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 19:05:49,740 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2023-02-15 19:05:49,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-15 19:05:49,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-15 19:05:49,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:05:49,862 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-02-15 19:05:49,899 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:05:49,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 19:05:50,015 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_315 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_ArrVal_315) |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset|) c_~N~0)) is different from false [2023-02-15 19:05:50,068 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:05:50,071 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:05:50,071 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-02-15 19:05:50,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:05:50,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070136412] [2023-02-15 19:05:50,072 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 19:05:50,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157666256] [2023-02-15 19:05:50,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157666256] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 19:05:50,072 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 19:05:50,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 16 [2023-02-15 19:05:50,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343936174] [2023-02-15 19:05:50,073 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 19:05:50,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-15 19:05:50,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:05:50,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-15 19:05:50,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=158, Unknown=7, NotChecked=26, Total=240 [2023-02-15 19:05:50,076 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 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) [2023-02-15 19:05:56,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:05:56,760 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2023-02-15 19:05:56,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-15 19:05:56,761 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-02-15 19:05:56,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:05:56,761 INFO L225 Difference]: With dead ends: 62 [2023-02-15 19:05:56,761 INFO L226 Difference]: Without dead ends: 60 [2023-02-15 19:05:56,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=215, Invalid=484, Unknown=7, NotChecked=50, Total=756 [2023-02-15 19:05:56,762 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 209 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 19:05:56,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 64 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 143 Invalid, 0 Unknown, 32 Unchecked, 0.2s Time] [2023-02-15 19:05:56,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-02-15 19:05:56,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 30. [2023-02-15 19:05:56,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.206896551724138) internal successors, (35), 29 states have internal predecessors, (35), 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) [2023-02-15 19:05:56,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2023-02-15 19:05:56,767 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 20 [2023-02-15 19:05:56,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:05:56,767 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2023-02-15 19:05:56,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 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) [2023-02-15 19:05:56,767 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2023-02-15 19:05:56,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-15 19:05:56,768 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:05:56,768 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:05:56,775 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-02-15 19:05:56,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:05:56,968 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:05:56,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:05:56,969 INFO L85 PathProgramCache]: Analyzing trace with hash 678263444, now seen corresponding path program 1 times [2023-02-15 19:05:56,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:05:56,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565445762] [2023-02-15 19:05:56,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:05:56,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:05:56,989 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 19:05:56,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1405660828] [2023-02-15 19:05:56,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:05:56,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:05:56,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:05:57,009 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) [2023-02-15 19:05:57,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-15 19:05:57,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:05:57,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 56 conjunts are in the unsatisfiable core [2023-02-15 19:05:57,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 19:05:57,531 INFO L321 Elim1Store]: treesize reduction 252, result has 37.8 percent of original size [2023-02-15 19:05:57,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 6 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 8 new quantified variables, introduced 19 case distinctions, treesize of input 462 treesize of output 894 [2023-02-15 19:05:57,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 33 [2023-02-15 19:05:57,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2023-02-15 19:05:57,630 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2023-02-15 19:05:57,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2023-02-15 19:05:57,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 19:06:00,016 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:06:00,024 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:06:00,026 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:06:00,064 INFO L321 Elim1Store]: treesize reduction 67, result has 25.6 percent of original size [2023-02-15 19:06:00,065 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 962 treesize of output 1458 [2023-02-15 19:06:00,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:06:00,796 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:06:00,800 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:06:00,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 91 [2023-02-15 19:06:00,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:06:00,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:06:00,847 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2023-02-15 19:06:00,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 634 treesize of output 591 [2023-02-15 19:06:01,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 5121 treesize of output 5120 [2023-02-15 19:06:02,081 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:06:02,125 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:06:02,172 INFO L321 Elim1Store]: treesize reduction 123, result has 43.6 percent of original size [2023-02-15 19:06:02,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 3555 treesize of output 2215 [2023-02-15 19:06:02,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 19:06:02,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 19:06:02,533 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-15 19:06:02,997 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:06:03,020 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:06:03,059 INFO L321 Elim1Store]: treesize reduction 118, result has 5.6 percent of original size [2023-02-15 19:06:03,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 5515 treesize of output 3887 [2023-02-15 19:06:03,669 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:06:03,669 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:06:03,672 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 543 treesize of output 1 [2023-02-15 19:06:04,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:06:04,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:06:04,699 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:06:04,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 89 [2023-02-15 19:06:04,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 19:06:04,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 19:06:04,971 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:06:05,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21302 treesize of output 21295 [2023-02-15 19:06:06,574 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-02-15 19:06:06,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-02-15 19:06:07,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 19:06:07,136 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-15 19:06:07,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2023-02-15 19:06:07,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:06:07,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:06:07,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:06:07,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 51 [2023-02-15 19:06:07,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 19:06:07,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 19:06:07,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 19:06:07,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:06:07,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2023-02-15 19:06:07,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:06:07,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 32 [2023-02-15 19:06:07,571 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:06:07,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 19:06:08,128 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:06:08,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:06:08,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565445762] [2023-02-15 19:06:08,128 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 19:06:08,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405660828] [2023-02-15 19:06:08,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405660828] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 19:06:08,128 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 19:06:08,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 20 [2023-02-15 19:06:08,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667331535] [2023-02-15 19:06:08,129 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 19:06:08,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-15 19:06:08,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:06:08,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-15 19:06:08,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=301, Unknown=10, NotChecked=0, Total=380 [2023-02-15 19:06:08,130 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 20 states, 20 states have (on average 2.15) internal successors, (43), 20 states have internal predecessors, (43), 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) [2023-02-15 19:06:18,430 WARN L233 SmtUtils]: Spent 10.20s on a formula simplification. DAG size of input: 37 DAG size of output: 34 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-15 19:06:23,532 WARN L233 SmtUtils]: Spent 5.04s on a formula simplification. DAG size of input: 63 DAG size of output: 45 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-15 19:06:27,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:06:27,324 INFO L93 Difference]: Finished difference Result 103 states and 118 transitions. [2023-02-15 19:06:27,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-02-15 19:06:27,325 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.15) internal successors, (43), 20 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-02-15 19:06:27,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:06:27,326 INFO L225 Difference]: With dead ends: 103 [2023-02-15 19:06:27,326 INFO L226 Difference]: Without dead ends: 101 [2023-02-15 19:06:27,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 478 ImplicationChecksByTransitivity, 18.4s TimeCoverageRelationStatistics Valid=379, Invalid=1581, Unknown=20, NotChecked=0, Total=1980 [2023-02-15 19:06:27,327 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 136 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 43 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-02-15 19:06:27,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 129 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 253 Invalid, 13 Unknown, 0 Unchecked, 1.3s Time] [2023-02-15 19:06:27,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-02-15 19:06:27,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 64. [2023-02-15 19:06:27,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.253968253968254) internal successors, (79), 63 states have internal predecessors, (79), 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) [2023-02-15 19:06:27,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 79 transitions. [2023-02-15 19:06:27,338 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 79 transitions. Word has length 24 [2023-02-15 19:06:27,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:06:27,338 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 79 transitions. [2023-02-15 19:06:27,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.15) internal successors, (43), 20 states have internal predecessors, (43), 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) [2023-02-15 19:06:27,338 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 79 transitions. [2023-02-15 19:06:27,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-15 19:06:27,339 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:06:27,339 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:06:27,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-15 19:06:27,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:06:27,545 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:06:27,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:06:27,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1455292262, now seen corresponding path program 2 times [2023-02-15 19:06:27,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:06:27,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178001808] [2023-02-15 19:06:27,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:06:27,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:06:27,563 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 19:06:27,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [758614840] [2023-02-15 19:06:27,563 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 19:06:27,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:06:27,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:06:27,564 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) [2023-02-15 19:06:27,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-15 19:06:27,660 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 19:06:27,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 19:06:27,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-15 19:06:27,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 19:06:27,729 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 19:06:27,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 19:06:27,773 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 19:06:27,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:06:27,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178001808] [2023-02-15 19:06:27,774 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 19:06:27,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758614840] [2023-02-15 19:06:27,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758614840] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 19:06:27,774 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 19:06:27,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-02-15 19:06:27,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658875210] [2023-02-15 19:06:27,774 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 19:06:27,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-15 19:06:27,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:06:27,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-15 19:06:27,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-02-15 19:06:27,775 INFO L87 Difference]: Start difference. First operand 64 states and 79 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 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) [2023-02-15 19:06:28,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:06:28,020 INFO L93 Difference]: Finished difference Result 154 states and 180 transitions. [2023-02-15 19:06:28,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-15 19:06:28,020 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-02-15 19:06:28,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:06:28,021 INFO L225 Difference]: With dead ends: 154 [2023-02-15 19:06:28,021 INFO L226 Difference]: Without dead ends: 94 [2023-02-15 19:06:28,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=180, Invalid=420, Unknown=0, NotChecked=0, Total=600 [2023-02-15 19:06:28,021 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 156 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 19:06:28,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 66 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 19:06:28,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-02-15 19:06:28,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 61. [2023-02-15 19:06:28,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.1666666666666667) internal successors, (70), 60 states have internal predecessors, (70), 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) [2023-02-15 19:06:28,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 70 transitions. [2023-02-15 19:06:28,030 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 70 transitions. Word has length 24 [2023-02-15 19:06:28,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:06:28,031 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 70 transitions. [2023-02-15 19:06:28,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 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) [2023-02-15 19:06:28,031 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2023-02-15 19:06:28,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-15 19:06:28,031 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:06:28,032 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:06:28,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-15 19:06:28,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-02-15 19:06:28,232 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:06:28,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:06:28,233 INFO L85 PathProgramCache]: Analyzing trace with hash -573929008, now seen corresponding path program 2 times [2023-02-15 19:06:28,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:06:28,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68177744] [2023-02-15 19:06:28,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:06:28,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:06:28,252 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 19:06:28,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1783558172] [2023-02-15 19:06:28,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 19:06:28,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:06:28,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:06:28,263 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) [2023-02-15 19:06:28,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-15 19:06:28,331 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 19:06:28,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 19:06:28,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-15 19:06:28,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 19:06:28,374 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-15 19:06:28,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 19:06:28,411 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-15 19:06:28,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:06:28,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68177744] [2023-02-15 19:06:28,411 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 19:06:28,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783558172] [2023-02-15 19:06:28,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783558172] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 19:06:28,411 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 19:06:28,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-02-15 19:06:28,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983450966] [2023-02-15 19:06:28,411 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 19:06:28,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-15 19:06:28,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:06:28,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-15 19:06:28,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-02-15 19:06:28,412 INFO L87 Difference]: Start difference. First operand 61 states and 70 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:06:28,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:06:28,533 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2023-02-15 19:06:28,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-15 19:06:28,533 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-02-15 19:06:28,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:06:28,533 INFO L225 Difference]: With dead ends: 75 [2023-02-15 19:06:28,533 INFO L226 Difference]: Without dead ends: 62 [2023-02-15 19:06:28,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2023-02-15 19:06:28,534 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 60 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 19:06:28,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 37 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 19:06:28,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-02-15 19:06:28,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 50. [2023-02-15 19:06:28,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.1428571428571428) internal successors, (56), 49 states have internal predecessors, (56), 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) [2023-02-15 19:06:28,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 56 transitions. [2023-02-15 19:06:28,540 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 56 transitions. Word has length 28 [2023-02-15 19:06:28,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:06:28,540 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 56 transitions. [2023-02-15 19:06:28,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:06:28,540 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions. [2023-02-15 19:06:28,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-15 19:06:28,541 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:06:28,541 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:06:28,546 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-02-15 19:06:28,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:06:28,746 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:06:28,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:06:28,746 INFO L85 PathProgramCache]: Analyzing trace with hash 341343694, now seen corresponding path program 3 times [2023-02-15 19:06:28,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:06:28,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172573969] [2023-02-15 19:06:28,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:06:28,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:06:28,767 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 19:06:28,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1780547971] [2023-02-15 19:06:28,768 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 19:06:28,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:06:28,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:06:28,774 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) [2023-02-15 19:06:28,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-15 19:06:28,996 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-02-15 19:06:28,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 19:06:28,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 71 conjunts are in the unsatisfiable core [2023-02-15 19:06:29,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 19:06:29,010 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-15 19:06:29,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2023-02-15 19:06:29,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:06:29,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:06:29,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:06:29,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 22 [2023-02-15 19:06:29,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 19:06:29,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 19:06:29,057 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2023-02-15 19:06:29,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2023-02-15 19:06:29,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 60 [2023-02-15 19:06:29,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:06:29,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:06:29,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 100 [2023-02-15 19:06:29,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:06:29,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:06:29,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 24 [2023-02-15 19:06:29,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:06:29,268 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2023-02-15 19:06:29,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 127 [2023-02-15 19:06:29,319 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:06:29,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:06:29,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:06:29,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:06:29,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 194 [2023-02-15 19:06:29,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:06:29,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:06:29,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 195 treesize of output 128 [2023-02-15 19:06:29,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:06:29,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:06:29,450 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 44 [2023-02-15 19:06:29,703 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:06:29,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 19:06:32,696 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:06:32,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:06:32,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172573969] [2023-02-15 19:06:32,696 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 19:06:32,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780547971] [2023-02-15 19:06:32,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780547971] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 19:06:32,696 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 19:06:32,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 19] total 33 [2023-02-15 19:06:32,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996322641] [2023-02-15 19:06:32,697 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 19:06:32,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-02-15 19:06:32,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:06:32,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-02-15 19:06:32,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=877, Unknown=4, NotChecked=0, Total=1056 [2023-02-15 19:06:32,699 INFO L87 Difference]: Start difference. First operand 50 states and 56 transitions. Second operand has 33 states, 33 states have (on average 1.6666666666666667) internal successors, (55), 33 states have internal predecessors, (55), 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) [2023-02-15 19:06:39,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-15 19:06:48,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-15 19:07:01,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:07:01,999 INFO L93 Difference]: Finished difference Result 124 states and 135 transitions. [2023-02-15 19:07:02,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-02-15 19:07:02,000 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.6666666666666667) internal successors, (55), 33 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-15 19:07:02,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:07:02,000 INFO L225 Difference]: With dead ends: 124 [2023-02-15 19:07:02,000 INFO L226 Difference]: Without dead ends: 115 [2023-02-15 19:07:02,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1510 ImplicationChecksByTransitivity, 24.2s TimeCoverageRelationStatistics Valid=944, Invalid=4895, Unknown=13, NotChecked=0, Total=5852 [2023-02-15 19:07:02,003 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 208 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 120 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2023-02-15 19:07:02,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 165 Invalid, 643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 510 Invalid, 13 Unknown, 0 Unchecked, 7.8s Time] [2023-02-15 19:07:02,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-02-15 19:07:02,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 88. [2023-02-15 19:07:02,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.1149425287356323) internal successors, (97), 87 states have internal predecessors, (97), 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) [2023-02-15 19:07:02,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 97 transitions. [2023-02-15 19:07:02,034 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 97 transitions. Word has length 30 [2023-02-15 19:07:02,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:07:02,034 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 97 transitions. [2023-02-15 19:07:02,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.6666666666666667) internal successors, (55), 33 states have internal predecessors, (55), 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) [2023-02-15 19:07:02,034 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 97 transitions. [2023-02-15 19:07:02,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-02-15 19:07:02,038 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:07:02,039 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:07:02,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-15 19:07:02,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-02-15 19:07:02,246 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:07:02,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:07:02,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1505554158, now seen corresponding path program 3 times [2023-02-15 19:07:02,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:07:02,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741965683] [2023-02-15 19:07:02,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:07:02,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:07:02,268 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 19:07:02,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1964358836] [2023-02-15 19:07:02,268 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 19:07:02,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:07:02,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:07:02,270 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) [2023-02-15 19:07:02,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-15 19:07:03,101 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-02-15 19:07:03,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 19:07:03,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 66 conjunts are in the unsatisfiable core [2023-02-15 19:07:03,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 19:07:03,207 INFO L321 Elim1Store]: treesize reduction 117, result has 35.4 percent of original size [2023-02-15 19:07:03,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 92 treesize of output 229 [2023-02-15 19:07:03,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 19:07:03,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 19:07:03,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 19:07:03,275 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:07:03,280 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:07:03,317 INFO L321 Elim1Store]: treesize reduction 25, result has 24.2 percent of original size [2023-02-15 19:07:03,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 93 treesize of output 92 [2023-02-15 19:07:03,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 19:07:03,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 19:07:03,373 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:07:03,374 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:07:03,376 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:07:03,381 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 74 [2023-02-15 19:07:03,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 19:07:03,405 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:07:03,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 11 [2023-02-15 19:07:03,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 19:07:03,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:07:03,429 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2023-02-15 19:07:03,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 16 [2023-02-15 19:07:03,433 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 19:07:03,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2023-02-15 19:07:03,511 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse6 (= |c_ULTIMATE.start_main_~c~0#1.base| |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse4 (not .cse6)) (.cse7 (= |c_ULTIMATE.start_main_~c~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|))) (and (not (<= c_~N~0 0)) (<= c_~N~0 2147483647) (= 0 |c_ULTIMATE.start_main_~c~0#1.offset|) (let ((.cse3 (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset|) c_~N~0)) (.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|))) (or (and (exists ((v_DerPreprocessor_96 (Array Int Int)) (v_DerPreprocessor_97 (Array Int Int)) (v_DerPreprocessor_98 (Array Int Int))) (let ((.cse2 (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_96) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_97) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_98) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_96) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_97) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_98))) (let ((.cse1 (select .cse2 |c_ULTIMATE.start_main_~a~0#1.base|))) (and (= (select v_DerPreprocessor_98 |c_ULTIMATE.start_main_~c~0#1.offset|) c_~N~0) (= .cse0 .cse1) (= v_DerPreprocessor_96 .cse1) (= (select .cse2 |c_ULTIMATE.start_main_~b~0#1.base|) (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)))))) .cse3 .cse4) (and (or (and .cse3 .cse4) (and (exists ((v_DerPreprocessor_91 (Array Int Int)) (v_DerPreprocessor_92 (Array Int Int)) (v_DerPreprocessor_90 (Array Int Int))) (let ((.cse5 (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_90) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_91) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_92) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_90) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_91) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_92))) (and (= (select v_DerPreprocessor_92 |c_ULTIMATE.start_main_~c~0#1.offset|) c_~N~0) (= v_DerPreprocessor_91 (select .cse5 |c_ULTIMATE.start_main_~b~0#1.base|)) (= v_DerPreprocessor_90 (select .cse5 |c_ULTIMATE.start_main_~a~0#1.base|))))) .cse3 .cse6)) .cse7) (and .cse3 .cse6 (exists ((v_DerPreprocessor_95 (Array Int Int)) (v_DerPreprocessor_93 (Array Int Int)) (v_DerPreprocessor_94 (Array Int Int))) (let ((.cse9 (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_93) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_94) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_95) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_93) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_94) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_95))) (let ((.cse8 (select .cse9 |c_ULTIMATE.start_main_~a~0#1.base|))) (and (= v_DerPreprocessor_93 .cse8) (= .cse0 .cse8) (= v_DerPreprocessor_94 (select .cse9 |c_ULTIMATE.start_main_~b~0#1.base|)) (= (select v_DerPreprocessor_95 |c_ULTIMATE.start_main_~c~0#1.offset|) c_~N~0)))))))) .cse4 (= |c_ULTIMATE.start_main_~i~0#1| 1) (not .cse7)))) is different from true [2023-02-15 19:07:03,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:07:03,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:07:03,538 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2023-02-15 19:07:03,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 56 [2023-02-15 19:07:03,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 19:07:03,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-15 19:07:03,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-15 19:07:03,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-15 19:07:03,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-15 19:07:03,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-15 19:07:03,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 50 [2023-02-15 19:07:03,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:07:03,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:07:03,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 100 [2023-02-15 19:07:03,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:07:03,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:07:03,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 24 [2023-02-15 19:07:03,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:07:03,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-02-15 19:07:03,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 50 [2023-02-15 19:07:03,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:07:03,997 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2023-02-15 19:07:03,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 95 [2023-02-15 19:07:04,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:07:04,030 INFO L321 Elim1Store]: treesize reduction 27, result has 35.7 percent of original size [2023-02-15 19:07:04,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 32 [2023-02-15 19:07:04,171 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2023-02-15 19:07:04,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 19:07:23,395 WARN L233 SmtUtils]: Spent 6.11s on a formula simplification. DAG size of input: 62 DAG size of output: 44 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-15 19:07:59,749 WARN L233 SmtUtils]: Spent 14.68s on a formula simplification. DAG size of input: 69 DAG size of output: 50 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-15 19:08:15,885 WARN L233 SmtUtils]: Spent 5.23s on a formula simplification that was a NOOP. DAG size: 47 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-15 19:08:27,597 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:08:27,597 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:08:27,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2023-02-15 19:08:27,621 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:08:27,623 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 26 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:08:27,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:08:27,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741965683] [2023-02-15 19:08:27,624 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 19:08:27,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964358836] [2023-02-15 19:08:27,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964358836] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 19:08:27,624 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 19:08:27,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 43 [2023-02-15 19:08:27,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941846056] [2023-02-15 19:08:27,625 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 19:08:27,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-02-15 19:08:27,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:08:27,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-02-15 19:08:27,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=417, Invalid=1286, Unknown=23, NotChecked=80, Total=1806 [2023-02-15 19:08:27,627 INFO L87 Difference]: Start difference. First operand 88 states and 97 transitions. Second operand has 43 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 43 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:08:37,861 WARN L233 SmtUtils]: Spent 7.91s on a formula simplification. DAG size of input: 152 DAG size of output: 44 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-15 19:08:53,003 WARN L233 SmtUtils]: Spent 7.08s on a formula simplification. DAG size of input: 100 DAG size of output: 79 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-15 19:08:54,857 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse12 (< 3 c_~N~0)) (.cse14 (+ |c_ULTIMATE.start_main_~i~0#1| 1))) (let ((.cse4 (< .cse14 c_~N~0)) (.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~c~0#1.base|)) (.cse2 (+ |c_ULTIMATE.start_main_~c~0#1.offset| (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8))) (.cse3 (+ |c_ULTIMATE.start_main_~c~0#1.offset| (* (mod .cse14 4294967296) 8))) (.cse5 (< 4 c_~N~0)) (.cse6 (forall ((v_ArrVal_713 (Array Int Int)) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_716 (Array Int Int)) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_722 Int)) (let ((.cse13 (* 4294967296 |aux_div_ULTIMATE.start_main_~i~0#1_45|))) (or (= (select (store (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_713) |c_ULTIMATE.start_main_~b~0#1.base| v_ArrVal_716) |c_ULTIMATE.start_main_~c~0#1.base|) (+ |c_ULTIMATE.start_main_~c~0#1.offset| (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8)) v_ArrVal_722) |c_ULTIMATE.start_main_~c~0#1.offset|) c_~N~0) (< (+ .cse13 |aux_mod_ULTIMATE.start_main_~i~0#1_45| 1) c_~N~0) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~N~0 (+ .cse13 |aux_mod_ULTIMATE.start_main_~i~0#1_45|)))))) (.cse7 (not .cse12)) (.cse10 (< (+ |c_ULTIMATE.start_main_~i~0#1| 2) c_~N~0))) (and (forall ((v_ArrVal_719 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_717 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_722 Int)) (let ((.cse0 (* 4294967296 |aux_div_ULTIMATE.start_main_~i~0#1_45|))) (or (< (+ .cse0 |aux_mod_ULTIMATE.start_main_~i~0#1_45| 1) c_~N~0) (= (select (store (store (store .cse1 .cse2 v_ArrVal_717) .cse3 v_ArrVal_719) (+ |c_ULTIMATE.start_main_~c~0#1.offset| (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8)) v_ArrVal_722) |c_ULTIMATE.start_main_~c~0#1.offset|) c_~N~0) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~N~0 (+ .cse0 |aux_mod_ULTIMATE.start_main_~i~0#1_45|))))) (= (select .cse1 |c_ULTIMATE.start_main_~c~0#1.offset|) c_~N~0) (or (not (< |c_ULTIMATE.start_main_~i~0#1| c_~N~0)) .cse4 .cse5 .cse6 .cse7) (forall ((v_ArrVal_719 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_722 Int)) (let ((.cse8 (* 4294967296 |aux_div_ULTIMATE.start_main_~i~0#1_45|))) (or (< (+ .cse8 |aux_mod_ULTIMATE.start_main_~i~0#1_45| 1) c_~N~0) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (= (select (store (store .cse1 .cse2 v_ArrVal_719) (+ |c_ULTIMATE.start_main_~c~0#1.offset| (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8)) v_ArrVal_722) |c_ULTIMATE.start_main_~c~0#1.offset|) c_~N~0) (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~N~0 (+ .cse8 |aux_mod_ULTIMATE.start_main_~i~0#1_45|))))) (not (= |c_ULTIMATE.start_main_~c~0#1.base| |c_ULTIMATE.start_main_~b~0#1.base|)) (forall ((v_ArrVal_719 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_722 Int)) (let ((.cse9 (* 4294967296 |aux_div_ULTIMATE.start_main_~i~0#1_45|))) (or (< (+ .cse9 |aux_mod_ULTIMATE.start_main_~i~0#1_45| 1) c_~N~0) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~N~0 (+ .cse9 |aux_mod_ULTIMATE.start_main_~i~0#1_45|)) (= (select (store (store .cse1 .cse2 v_ArrVal_719) (+ |c_ULTIMATE.start_main_~c~0#1.offset| (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) (- 34359738368)) v_ArrVal_722) |c_ULTIMATE.start_main_~c~0#1.offset|) c_~N~0)))) (or (not .cse4) .cse10 .cse5 .cse6 .cse7) (forall ((v_ArrVal_719 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_717 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_722 Int)) (let ((.cse11 (* 4294967296 |aux_div_ULTIMATE.start_main_~i~0#1_45|))) (or (< (+ .cse11 |aux_mod_ULTIMATE.start_main_~i~0#1_45| 1) c_~N~0) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (= (select (store (store (store .cse1 .cse2 v_ArrVal_717) .cse3 v_ArrVal_719) (+ |c_ULTIMATE.start_main_~c~0#1.offset| (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) (- 34359738368)) v_ArrVal_722) |c_ULTIMATE.start_main_~c~0#1.offset|) c_~N~0) (<= c_~N~0 (+ .cse11 |aux_mod_ULTIMATE.start_main_~i~0#1_45|))))) (<= c_~N~0 4) (<= |c_ULTIMATE.start_main_~i~0#1| 4) (or (< (+ |c_ULTIMATE.start_main_~i~0#1| 3) c_~N~0) .cse5 .cse6 .cse7 (not .cse10)) (<= c_~N~0 2147483647) (= 0 |c_ULTIMATE.start_main_~c~0#1.offset|) .cse12))) is different from false [2023-02-15 19:09:09,934 WARN L233 SmtUtils]: Spent 14.89s on a formula simplification. DAG size of input: 84 DAG size of output: 74 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-15 19:09:21,142 WARN L233 SmtUtils]: Spent 8.89s on a formula simplification that was a NOOP. DAG size: 81 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-15 19:09:31,010 WARN L233 SmtUtils]: Spent 9.79s on a formula simplification. DAG size of input: 80 DAG size of output: 70 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-15 19:09:44,127 WARN L233 SmtUtils]: Spent 12.99s on a formula simplification. DAG size of input: 78 DAG size of output: 68 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-15 19:10:00,880 WARN L233 SmtUtils]: Spent 15.27s on a formula simplification. DAG size of input: 76 DAG size of output: 60 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-15 19:10:09,360 WARN L233 SmtUtils]: Spent 8.40s on a formula simplification. DAG size of input: 65 DAG size of output: 55 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-15 19:10:22,754 WARN L233 SmtUtils]: Spent 10.82s on a formula simplification. DAG size of input: 76 DAG size of output: 60 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)