./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-patterns/array26_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e1ff0e6 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-patterns/array26_pattern.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 56ad35a361c83538323b9be55683beef9c8271c8f67221c1a0924c8496da71d0 --- Real Ultimate output --- This is Ultimate 0.2.2-?-7e1ff0e [2023-02-14 21:55:35,150 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-14 21:55:35,152 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-14 21:55:35,184 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-14 21:55:35,184 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-14 21:55:35,187 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-14 21:55:35,188 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-14 21:55:35,190 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-14 21:55:35,191 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-14 21:55:35,195 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-14 21:55:35,196 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-14 21:55:35,197 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-14 21:55:35,198 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-14 21:55:35,199 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-14 21:55:35,200 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-14 21:55:35,201 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-14 21:55:35,202 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-14 21:55:35,203 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-14 21:55:35,203 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-14 21:55:35,207 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-14 21:55:35,208 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-14 21:55:35,208 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-14 21:55:35,209 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-14 21:55:35,210 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-14 21:55:35,215 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-14 21:55:35,216 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-14 21:55:35,216 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-14 21:55:35,217 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-14 21:55:35,217 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-14 21:55:35,218 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-14 21:55:35,218 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-14 21:55:35,218 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-14 21:55:35,219 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-14 21:55:35,220 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-14 21:55:35,221 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-14 21:55:35,222 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-14 21:55:35,222 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-14 21:55:35,222 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-14 21:55:35,222 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-14 21:55:35,223 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-14 21:55:35,224 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-14 21:55:35,225 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-14 21:55:35,253 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-14 21:55:35,253 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-14 21:55:35,254 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-14 21:55:35,254 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-14 21:55:35,254 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-14 21:55:35,255 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-14 21:55:35,255 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-14 21:55:35,255 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-14 21:55:35,255 INFO L138 SettingsManager]: * Use SBE=true [2023-02-14 21:55:35,255 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-14 21:55:35,256 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-14 21:55:35,256 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-14 21:55:35,256 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-14 21:55:35,257 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-14 21:55:35,257 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-14 21:55:35,257 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-14 21:55:35,257 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-14 21:55:35,257 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-14 21:55:35,257 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-14 21:55:35,257 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-14 21:55:35,257 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-14 21:55:35,258 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-14 21:55:35,258 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-14 21:55:35,258 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-14 21:55:35,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 21:55:35,258 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-14 21:55:35,258 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-14 21:55:35,259 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-14 21:55:35,259 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-14 21:55:35,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-14 21:55:35,259 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-14 21:55:35,259 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-14 21:55:35,259 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-14 21:55:35,260 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-14 21:55:35,260 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-14 21:55:35,260 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 56ad35a361c83538323b9be55683beef9c8271c8f67221c1a0924c8496da71d0 [2023-02-14 21:55:35,459 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-14 21:55:35,479 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-14 21:55:35,481 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-14 21:55:35,481 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-14 21:55:35,482 INFO L275 PluginConnector]: CDTParser initialized [2023-02-14 21:55:35,482 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array26_pattern.c [2023-02-14 21:55:36,414 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-14 21:55:36,559 INFO L351 CDTParser]: Found 1 translation units. [2023-02-14 21:55:36,560 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array26_pattern.c [2023-02-14 21:55:36,564 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8412cd05e/802523e967274ea4a284eab1debe003f/FLAG23e827314 [2023-02-14 21:55:36,573 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8412cd05e/802523e967274ea4a284eab1debe003f [2023-02-14 21:55:36,574 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-14 21:55:36,575 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-14 21:55:36,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-14 21:55:36,576 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-14 21:55:36,578 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-14 21:55:36,579 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 09:55:36" (1/1) ... [2023-02-14 21:55:36,579 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@423638b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:55:36, skipping insertion in model container [2023-02-14 21:55:36,579 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 09:55:36" (1/1) ... [2023-02-14 21:55:36,584 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-14 21:55:36,593 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 21:55:36,686 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-patterns/array26_pattern.c[1324,1337] [2023-02-14 21:55:36,710 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 21:55:36,722 INFO L203 MainTranslator]: Completed pre-run [2023-02-14 21:55:36,732 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-patterns/array26_pattern.c[1324,1337] [2023-02-14 21:55:36,744 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 21:55:36,753 INFO L208 MainTranslator]: Completed translation [2023-02-14 21:55:36,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:55:36 WrapperNode [2023-02-14 21:55:36,753 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-14 21:55:36,754 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-14 21:55:36,754 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-14 21:55:36,754 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-14 21:55:36,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:55:36" (1/1) ... [2023-02-14 21:55:36,771 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:55:36" (1/1) ... [2023-02-14 21:55:36,783 INFO L138 Inliner]: procedures = 16, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 78 [2023-02-14 21:55:36,783 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-14 21:55:36,783 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-14 21:55:36,783 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-14 21:55:36,784 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-14 21:55:36,789 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:55:36" (1/1) ... [2023-02-14 21:55:36,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:55:36" (1/1) ... [2023-02-14 21:55:36,791 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:55:36" (1/1) ... [2023-02-14 21:55:36,791 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:55:36" (1/1) ... [2023-02-14 21:55:36,794 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:55:36" (1/1) ... [2023-02-14 21:55:36,796 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:55:36" (1/1) ... [2023-02-14 21:55:36,801 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:55:36" (1/1) ... [2023-02-14 21:55:36,802 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:55:36" (1/1) ... [2023-02-14 21:55:36,803 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-14 21:55:36,803 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-14 21:55:36,804 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-14 21:55:36,804 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-14 21:55:36,804 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:55:36" (1/1) ... [2023-02-14 21:55:36,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 21:55:36,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 21:55:36,823 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) [2023-02-14 21:55:36,831 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 [2023-02-14 21:55:36,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-14 21:55:36,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-14 21:55:36,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-14 21:55:36,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-14 21:55:36,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-14 21:55:36,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-14 21:55:36,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-14 21:55:36,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-14 21:55:36,905 INFO L235 CfgBuilder]: Building ICFG [2023-02-14 21:55:36,908 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-14 21:55:37,045 INFO L276 CfgBuilder]: Performing block encoding [2023-02-14 21:55:37,049 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-14 21:55:37,050 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2023-02-14 21:55:37,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 09:55:37 BoogieIcfgContainer [2023-02-14 21:55:37,058 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-14 21:55:37,071 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-14 21:55:37,071 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-14 21:55:37,074 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-14 21:55:37,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 09:55:36" (1/3) ... [2023-02-14 21:55:37,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63918e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 09:55:37, skipping insertion in model container [2023-02-14 21:55:37,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:55:36" (2/3) ... [2023-02-14 21:55:37,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63918e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 09:55:37, skipping insertion in model container [2023-02-14 21:55:37,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 09:55:37" (3/3) ... [2023-02-14 21:55:37,091 INFO L112 eAbstractionObserver]: Analyzing ICFG array26_pattern.c [2023-02-14 21:55:37,103 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-14 21:55:37,113 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-14 21:55:37,153 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-14 21:55:37,157 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;@14ab05fd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-14 21:55:37,157 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-14 21:55:37,160 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.619047619047619) internal successors, (34), 22 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) [2023-02-14 21:55:37,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-14 21:55:37,163 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 21:55:37,164 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 21:55:37,164 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 21:55:37,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 21:55:37,167 INFO L85 PathProgramCache]: Analyzing trace with hash -320975489, now seen corresponding path program 1 times [2023-02-14 21:55:37,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 21:55:37,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029496691] [2023-02-14 21:55:37,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 21:55:37,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 21:55:37,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:55:37,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 21:55:37,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029496691] [2023-02-14 21:55:37,269 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-14 21:55:37,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222923793] [2023-02-14 21:55:37,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 21:55:37,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 21:55:37,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 21:55:37,272 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) [2023-02-14 21:55:37,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-14 21:55:37,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:55:37,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-14 21:55:37,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 21:55:37,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 21:55:37,400 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 21:55:37,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222923793] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 21:55:37,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 21:55:37,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-14 21:55:37,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745433287] [2023-02-14 21:55:37,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 21:55:37,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-14 21:55:37,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 21:55:37,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-14 21:55:37,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-14 21:55:37,434 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.619047619047619) internal successors, (34), 22 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 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2023-02-14 21:55:37,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 21:55:37,449 INFO L93 Difference]: Finished difference Result 43 states and 64 transitions. [2023-02-14 21:55:37,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-14 21:55:37,451 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-14 21:55:37,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 21:55:37,458 INFO L225 Difference]: With dead ends: 43 [2023-02-14 21:55:37,458 INFO L226 Difference]: Without dead ends: 19 [2023-02-14 21:55:37,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-14 21:55:37,465 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 [2023-02-14 21:55:37,466 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] [2023-02-14 21:55:37,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-02-14 21:55:37,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-02-14 21:55:37,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 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) [2023-02-14 21:55:37,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2023-02-14 21:55:37,489 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 10 [2023-02-14 21:55:37,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 21:55:37,489 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2023-02-14 21:55:37,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2023-02-14 21:55:37,489 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2023-02-14 21:55:37,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-14 21:55:37,490 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 21:55:37,490 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 21:55:37,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-14 21:55:37,692 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 [2023-02-14 21:55:37,693 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 21:55:37,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 21:55:37,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1931938343, now seen corresponding path program 1 times [2023-02-14 21:55:37,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 21:55:37,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472367687] [2023-02-14 21:55:37,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 21:55:37,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 21:55:37,702 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 21:55:37,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [182208727] [2023-02-14 21:55:37,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 21:55:37,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 21:55:37,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 21:55:37,704 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) [2023-02-14 21:55:37,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-14 21:55:37,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:55:37,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-14 21:55:37,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 21:55:37,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 21:55:37,777 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 21:55:37,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 21:55:37,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472367687] [2023-02-14 21:55:37,777 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-14 21:55:37,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182208727] [2023-02-14 21:55:37,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182208727] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 21:55:37,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 21:55:37,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-14 21:55:37,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926994942] [2023-02-14 21:55:37,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 21:55:37,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-14 21:55:37,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 21:55:37,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-14 21:55:37,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-14 21:55:37,780 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2023-02-14 21:55:37,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 21:55:37,796 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2023-02-14 21:55:37,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-14 21:55:37,796 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-14 21:55:37,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 21:55:37,797 INFO L225 Difference]: With dead ends: 26 [2023-02-14 21:55:37,797 INFO L226 Difference]: Without dead ends: 22 [2023-02-14 21:55:37,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-14 21:55:37,798 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 13 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 21:55:37,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 52 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 21:55:37,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-02-14 21:55:37,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-02-14 21:55:37,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 21 states have internal predecessors, (28), 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) [2023-02-14 21:55:37,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2023-02-14 21:55:37,802 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 10 [2023-02-14 21:55:37,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 21:55:37,803 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2023-02-14 21:55:37,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2023-02-14 21:55:37,803 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2023-02-14 21:55:37,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-14 21:55:37,803 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 21:55:37,804 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 21:55:37,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-14 21:55:38,008 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 [2023-02-14 21:55:38,008 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 21:55:38,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 21:55:38,009 INFO L85 PathProgramCache]: Analyzing trace with hash -94215630, now seen corresponding path program 1 times [2023-02-14 21:55:38,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 21:55:38,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235266844] [2023-02-14 21:55:38,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 21:55:38,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 21:55:38,019 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 21:55:38,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1539047117] [2023-02-14 21:55:38,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 21:55:38,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 21:55:38,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 21:55:38,025 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) [2023-02-14 21:55:38,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-14 21:55:38,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:55:38,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-14 21:55:38,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 21:55:38,111 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-14 21:55:38,113 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 21:55:38,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 21:55:38,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235266844] [2023-02-14 21:55:38,113 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-14 21:55:38,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539047117] [2023-02-14 21:55:38,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539047117] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 21:55:38,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 21:55:38,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-14 21:55:38,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626639893] [2023-02-14 21:55:38,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 21:55:38,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 21:55:38,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 21:55:38,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 21:55:38,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-14 21:55:38,116 INFO L87 Difference]: Start difference. First operand 22 states and 28 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 21:55:38,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 21:55:38,181 INFO L93 Difference]: Finished difference Result 54 states and 72 transitions. [2023-02-14 21:55:38,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-14 21:55:38,182 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-02-14 21:55:38,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 21:55:38,182 INFO L225 Difference]: With dead ends: 54 [2023-02-14 21:55:38,182 INFO L226 Difference]: Without dead ends: 34 [2023-02-14 21:55:38,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-02-14 21:55:38,183 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 12 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 21:55:38,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 32 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 21:55:38,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-02-14 21:55:38,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 27. [2023-02-14 21:55:38,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 26 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) [2023-02-14 21:55:38,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2023-02-14 21:55:38,188 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 15 [2023-02-14 21:55:38,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 21:55:38,188 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2023-02-14 21:55:38,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 21:55:38,188 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2023-02-14 21:55:38,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-14 21:55:38,189 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 21:55:38,189 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 21:55:38,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-14 21:55:38,393 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 [2023-02-14 21:55:38,396 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 21:55:38,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 21:55:38,396 INFO L85 PathProgramCache]: Analyzing trace with hash -169454663, now seen corresponding path program 1 times [2023-02-14 21:55:38,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 21:55:38,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787799292] [2023-02-14 21:55:38,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 21:55:38,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 21:55:38,407 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 21:55:38,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2029268679] [2023-02-14 21:55:38,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 21:55:38,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 21:55:38,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 21:55:38,413 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) [2023-02-14 21:55:38,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-14 21:55:38,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:55:38,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-14 21:55:38,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 21:55:38,464 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-14 21:55:38,464 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 21:55:38,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 21:55:38,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787799292] [2023-02-14 21:55:38,465 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-14 21:55:38,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029268679] [2023-02-14 21:55:38,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029268679] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 21:55:38,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 21:55:38,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-14 21:55:38,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430938561] [2023-02-14 21:55:38,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 21:55:38,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-14 21:55:38,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 21:55:38,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-14 21:55:38,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-14 21:55:38,466 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 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) [2023-02-14 21:55:38,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 21:55:38,505 INFO L93 Difference]: Finished difference Result 54 states and 74 transitions. [2023-02-14 21:55:38,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-14 21:55:38,506 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 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 [2023-02-14 21:55:38,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 21:55:38,506 INFO L225 Difference]: With dead ends: 54 [2023-02-14 21:55:38,506 INFO L226 Difference]: Without dead ends: 36 [2023-02-14 21:55:38,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-14 21:55:38,507 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 29 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 21:55:38,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 17 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 21:55:38,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-02-14 21:55:38,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 30. [2023-02-14 21:55:38,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 29 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) [2023-02-14 21:55:38,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2023-02-14 21:55:38,512 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 18 [2023-02-14 21:55:38,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 21:55:38,513 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2023-02-14 21:55:38,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 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) [2023-02-14 21:55:38,513 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2023-02-14 21:55:38,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-14 21:55:38,513 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 21:55:38,514 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, 1] [2023-02-14 21:55:38,533 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-02-14 21:55:38,717 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 [2023-02-14 21:55:38,718 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 21:55:38,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 21:55:38,718 INFO L85 PathProgramCache]: Analyzing trace with hash -308201553, now seen corresponding path program 1 times [2023-02-14 21:55:38,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 21:55:38,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766132861] [2023-02-14 21:55:38,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 21:55:38,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 21:55:38,729 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 21:55:38,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [13288217] [2023-02-14 21:55:38,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 21:55:38,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 21:55:38,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 21:55:38,735 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) [2023-02-14 21:55:38,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-14 21:55:38,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:55:38,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-14 21:55:38,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 21:55:38,877 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-14 21:55:38,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 21:55:38,908 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-14 21:55:38,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 21:55:38,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766132861] [2023-02-14 21:55:38,909 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-14 21:55:38,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13288217] [2023-02-14 21:55:38,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13288217] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 21:55:38,910 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 21:55:38,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-02-14 21:55:38,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686155098] [2023-02-14 21:55:38,910 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 21:55:38,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-14 21:55:38,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 21:55:38,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-14 21:55:38,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-02-14 21:55:38,911 INFO L87 Difference]: Start difference. First operand 30 states and 38 transitions. Second operand has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 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) [2023-02-14 21:55:39,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 21:55:39,050 INFO L93 Difference]: Finished difference Result 65 states and 86 transitions. [2023-02-14 21:55:39,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-14 21:55:39,051 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 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 21 [2023-02-14 21:55:39,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 21:55:39,053 INFO L225 Difference]: With dead ends: 65 [2023-02-14 21:55:39,053 INFO L226 Difference]: Without dead ends: 45 [2023-02-14 21:55:39,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2023-02-14 21:55:39,056 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 74 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 21:55:39,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 26 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 21:55:39,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-02-14 21:55:39,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 40. [2023-02-14 21:55:39,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 39 states have internal predecessors, (51), 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) [2023-02-14 21:55:39,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2023-02-14 21:55:39,076 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 51 transitions. Word has length 21 [2023-02-14 21:55:39,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 21:55:39,076 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 51 transitions. [2023-02-14 21:55:39,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 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) [2023-02-14 21:55:39,077 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2023-02-14 21:55:39,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-14 21:55:39,077 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 21:55:39,077 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 21:55:39,085 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-02-14 21:55:39,281 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 [2023-02-14 21:55:39,282 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 21:55:39,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 21:55:39,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1610723178, now seen corresponding path program 1 times [2023-02-14 21:55:39,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 21:55:39,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051689797] [2023-02-14 21:55:39,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 21:55:39,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 21:55:39,291 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 21:55:39,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2017627652] [2023-02-14 21:55:39,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 21:55:39,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 21:55:39,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 21:55:39,293 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) [2023-02-14 21:55:39,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-14 21:55:39,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:55:39,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-14 21:55:39,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 21:55:39,411 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-14 21:55:39,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 21:55:39,451 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-14 21:55:39,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 21:55:39,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051689797] [2023-02-14 21:55:39,451 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-14 21:55:39,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017627652] [2023-02-14 21:55:39,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017627652] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 21:55:39,452 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 21:55:39,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2023-02-14 21:55:39,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688855804] [2023-02-14 21:55:39,452 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 21:55:39,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-14 21:55:39,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 21:55:39,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-14 21:55:39,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-02-14 21:55:39,456 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 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) [2023-02-14 21:55:39,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 21:55:39,662 INFO L93 Difference]: Finished difference Result 113 states and 152 transitions. [2023-02-14 21:55:39,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-02-14 21:55:39,662 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 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) Word has length 27 [2023-02-14 21:55:39,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 21:55:39,663 INFO L225 Difference]: With dead ends: 113 [2023-02-14 21:55:39,663 INFO L226 Difference]: Without dead ends: 88 [2023-02-14 21:55:39,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=289, Unknown=0, NotChecked=0, Total=420 [2023-02-14 21:55:39,664 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 82 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 21:55:39,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 35 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 21:55:39,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-02-14 21:55:39,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 67. [2023-02-14 21:55:39,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.3333333333333333) internal successors, (88), 66 states have internal predecessors, (88), 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) [2023-02-14 21:55:39,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 88 transitions. [2023-02-14 21:55:39,671 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 88 transitions. Word has length 27 [2023-02-14 21:55:39,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 21:55:39,671 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 88 transitions. [2023-02-14 21:55:39,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 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) [2023-02-14 21:55:39,671 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 88 transitions. [2023-02-14 21:55:39,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-02-14 21:55:39,672 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 21:55:39,672 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 21:55:39,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-14 21:55:39,882 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 [2023-02-14 21:55:39,883 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 21:55:39,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 21:55:39,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1943339208, now seen corresponding path program 1 times [2023-02-14 21:55:39,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 21:55:39,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415673814] [2023-02-14 21:55:39,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 21:55:39,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 21:55:39,893 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 21:55:39,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [922667851] [2023-02-14 21:55:39,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 21:55:39,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 21:55:39,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 21:55:39,906 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) [2023-02-14 21:55:39,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-14 21:55:40,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:55:40,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 73 conjunts are in the unsatisfiable core [2023-02-14 21:55:40,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 21:55:40,090 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 20 treesize of output 16 [2023-02-14 21:55:40,190 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 38 treesize of output 37 [2023-02-14 21:55:40,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:55:40,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:55:40,430 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 21:55:40,430 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 1 case distinctions, treesize of input 52 treesize of output 54 [2023-02-14 21:55:40,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:55:40,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:55:40,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:55:40,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:55:40,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:55:40,569 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 21:55:40,569 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 44 treesize of output 51 [2023-02-14 21:55:41,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:55:41,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:55:41,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:55:41,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:55:41,091 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 21:55:41,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 21 [2023-02-14 21:55:41,115 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 21:55:41,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 21:55:42,847 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 471 treesize of output 455 [2023-02-14 21:55:43,102 INFO L321 Elim1Store]: treesize reduction 42, result has 2.3 percent of original size [2023-02-14 21:55:43,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 138462427 treesize of output 133481691