./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/eqn5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 26d01a9c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-fpi/eqn5.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 4e0883f4fdefc9bee6f97a4f9cfd1a3af8920c2853d796abd89e2a581ffdb6b5 --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-17 20:59:25,848 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 20:59:25,850 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 20:59:25,878 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 20:59:25,878 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 20:59:25,881 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 20:59:25,884 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 20:59:25,888 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 20:59:25,892 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 20:59:25,895 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 20:59:25,896 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 20:59:25,898 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 20:59:25,898 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 20:59:25,902 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 20:59:25,903 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 20:59:25,904 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 20:59:25,905 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 20:59:25,906 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 20:59:25,907 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 20:59:25,910 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 20:59:25,912 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 20:59:25,913 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 20:59:25,913 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 20:59:25,914 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 20:59:25,926 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 20:59:25,926 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 20:59:25,926 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 20:59:25,927 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 20:59:25,927 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 20:59:25,928 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 20:59:25,928 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 20:59:25,928 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 20:59:25,929 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 20:59:25,929 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 20:59:25,930 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 20:59:25,930 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 20:59:25,930 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 20:59:25,930 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 20:59:25,931 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 20:59:25,931 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 20:59:25,931 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 20:59:25,932 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-17 20:59:25,953 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 20:59:25,955 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 20:59:25,955 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 20:59:25,955 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 20:59:25,956 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 20:59:25,956 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 20:59:25,957 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 20:59:25,957 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 20:59:25,957 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 20:59:25,957 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 20:59:25,958 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 20:59:25,958 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 20:59:25,958 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 20:59:25,958 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 20:59:25,959 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 20:59:25,959 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 20:59:25,959 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 20:59:25,959 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 20:59:25,959 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 20:59:25,959 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 20:59:25,959 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 20:59:25,960 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 20:59:25,960 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 20:59:25,960 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 20:59:25,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 20:59:25,960 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 20:59:25,960 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 20:59:25,961 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 20:59:25,961 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 20:59:25,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 20:59:25,961 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 20:59:25,961 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 20:59:25,961 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 20:59:25,962 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 20:59:25,962 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 20:59:25,962 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e0883f4fdefc9bee6f97a4f9cfd1a3af8920c2853d796abd89e2a581ffdb6b5 [2023-02-17 20:59:26,157 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 20:59:26,178 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 20:59:26,180 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 20:59:26,181 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 20:59:26,181 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 20:59:26,182 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/eqn5.c [2023-02-17 20:59:27,264 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 20:59:27,468 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 20:59:27,468 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/eqn5.c [2023-02-17 20:59:27,472 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5e5216ac/5d3e307642c449f4ae21f087ec98de2d/FLAG1ff8433b4 [2023-02-17 20:59:27,483 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5e5216ac/5d3e307642c449f4ae21f087ec98de2d [2023-02-17 20:59:27,486 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 20:59:27,487 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 20:59:27,489 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 20:59:27,489 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 20:59:27,491 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 20:59:27,492 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 08:59:27" (1/1) ... [2023-02-17 20:59:27,494 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2af2c663 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:59:27, skipping insertion in model container [2023-02-17 20:59:27,494 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 08:59:27" (1/1) ... [2023-02-17 20:59:27,499 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 20:59:27,509 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 20:59:27,593 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/eqn5.c[587,600] [2023-02-17 20:59:27,604 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 20:59:27,610 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 20:59:27,617 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/eqn5.c[587,600] [2023-02-17 20:59:27,622 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 20:59:27,631 INFO L208 MainTranslator]: Completed translation [2023-02-17 20:59:27,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:59:27 WrapperNode [2023-02-17 20:59:27,632 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 20:59:27,633 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 20:59:27,633 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 20:59:27,633 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 20:59:27,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:59:27" (1/1) ... [2023-02-17 20:59:27,642 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:59:27" (1/1) ... [2023-02-17 20:59:27,653 INFO L138 Inliner]: procedures = 16, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 79 [2023-02-17 20:59:27,654 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 20:59:27,654 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 20:59:27,654 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 20:59:27,654 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 20:59:27,660 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:59:27" (1/1) ... [2023-02-17 20:59:27,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:59:27" (1/1) ... [2023-02-17 20:59:27,661 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:59:27" (1/1) ... [2023-02-17 20:59:27,661 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:59:27" (1/1) ... [2023-02-17 20:59:27,665 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:59:27" (1/1) ... [2023-02-17 20:59:27,667 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:59:27" (1/1) ... [2023-02-17 20:59:27,667 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:59:27" (1/1) ... [2023-02-17 20:59:27,668 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:59:27" (1/1) ... [2023-02-17 20:59:27,669 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 20:59:27,670 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 20:59:27,670 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 20:59:27,670 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 20:59:27,670 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:59:27" (1/1) ... [2023-02-17 20:59:27,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 20:59:27,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 20:59:27,700 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) [2023-02-17 20:59:27,753 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 [2023-02-17 20:59:27,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 20:59:27,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 20:59:27,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-17 20:59:27,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-17 20:59:27,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 20:59:27,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 20:59:27,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-17 20:59:27,860 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 20:59:27,862 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 20:59:28,014 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 20:59:28,018 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 20:59:28,018 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2023-02-17 20:59:28,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 08:59:28 BoogieIcfgContainer [2023-02-17 20:59:28,020 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 20:59:28,022 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 20:59:28,022 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 20:59:28,024 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 20:59:28,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 08:59:27" (1/3) ... [2023-02-17 20:59:28,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3315c52a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 08:59:28, skipping insertion in model container [2023-02-17 20:59:28,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:59:27" (2/3) ... [2023-02-17 20:59:28,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3315c52a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 08:59:28, skipping insertion in model container [2023-02-17 20:59:28,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 08:59:28" (3/3) ... [2023-02-17 20:59:28,026 INFO L112 eAbstractionObserver]: Analyzing ICFG eqn5.c [2023-02-17 20:59:28,039 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 20:59:28,039 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-17 20:59:28,074 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 20:59:28,080 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;@19d8f6a1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 20:59:28,081 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-17 20:59:28,084 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 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) [2023-02-17 20:59:28,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-17 20:59:28,089 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 20:59:28,089 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 20:59:28,090 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 20:59:28,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 20:59:28,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1828546148, now seen corresponding path program 1 times [2023-02-17 20:59:28,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 20:59:28,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962760708] [2023-02-17 20:59:28,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 20:59:28,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 20:59:28,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 20:59:28,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 20:59:28,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962760708] [2023-02-17 20:59:28,219 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-17 20:59:28,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609502365] [2023-02-17 20:59:28,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 20:59:28,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 20:59:28,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 20:59:28,238 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) [2023-02-17 20:59:28,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-17 20:59:28,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 20:59:28,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-17 20:59:28,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 20:59:28,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 20:59:28,363 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 20:59:28,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609502365] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 20:59:28,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 20:59:28,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 20:59:28,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114170204] [2023-02-17 20:59:28,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 20:59:28,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-17 20:59:28,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 20:59:28,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-17 20:59:28,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 20:59:28,396 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 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) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 20:59:28,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 20:59:28,414 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions. [2023-02-17 20:59:28,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-17 20:59:28,416 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-02-17 20:59:28,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 20:59:28,421 INFO L225 Difference]: With dead ends: 38 [2023-02-17 20:59:28,421 INFO L226 Difference]: Without dead ends: 17 [2023-02-17 20:59:28,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 20:59:28,426 INFO L413 NwaCegarLoop]: 24 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, 24 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 [2023-02-17 20:59:28,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 20:59:28,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-02-17 20:59:28,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-02-17 20:59:28,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 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) [2023-02-17 20:59:28,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2023-02-17 20:59:28,449 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2023-02-17 20:59:28,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 20:59:28,454 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2023-02-17 20:59:28,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 20:59:28,455 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2023-02-17 20:59:28,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-17 20:59:28,455 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 20:59:28,455 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 20:59:28,462 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-17 20:59:28,656 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 [2023-02-17 20:59:28,656 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 20:59:28,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 20:59:28,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1148487778, now seen corresponding path program 1 times [2023-02-17 20:59:28,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 20:59:28,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081197639] [2023-02-17 20:59:28,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 20:59:28,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 20:59:28,737 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 20:59:28,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [332730988] [2023-02-17 20:59:28,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 20:59:28,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 20:59:28,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 20:59:28,749 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) [2023-02-17 20:59:28,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-17 20:59:28,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 20:59:28,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-17 20:59:28,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 20:59:28,865 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 20:59:28,866 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 100 [2023-02-17 20:59:28,883 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 22 treesize of output 20 [2023-02-17 20:59:28,914 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 22 treesize of output 20 [2023-02-17 20:59:28,982 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 20:59:28,989 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 20:59:29,010 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 20:59:29,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 23 [2023-02-17 20:59:29,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 20:59:29,028 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 20:59:29,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 20:59:29,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081197639] [2023-02-17 20:59:29,028 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 20:59:29,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332730988] [2023-02-17 20:59:29,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332730988] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 20:59:29,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 20:59:29,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-17 20:59:29,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136808084] [2023-02-17 20:59:29,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 20:59:29,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 20:59:29,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 20:59:29,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 20:59:29,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-17 20:59:29,031 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 20:59:29,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 20:59:29,085 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2023-02-17 20:59:29,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 20:59:29,086 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-02-17 20:59:29,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 20:59:29,088 INFO L225 Difference]: With dead ends: 34 [2023-02-17 20:59:29,088 INFO L226 Difference]: Without dead ends: 32 [2023-02-17 20:59:29,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-02-17 20:59:29,090 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 14 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 20:59:29,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 56 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 20:59:29,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-02-17 20:59:29,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2023-02-17 20:59:29,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 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) [2023-02-17 20:59:29,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2023-02-17 20:59:29,101 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 12 [2023-02-17 20:59:29,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 20:59:29,102 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2023-02-17 20:59:29,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 20:59:29,102 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2023-02-17 20:59:29,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-17 20:59:29,102 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 20:59:29,103 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 20:59:29,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-17 20:59:29,308 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 [2023-02-17 20:59:29,308 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 20:59:29,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 20:59:29,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1755224028, now seen corresponding path program 1 times [2023-02-17 20:59:29,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 20:59:29,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338218722] [2023-02-17 20:59:29,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 20:59:29,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 20:59:29,363 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 20:59:29,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [42584213] [2023-02-17 20:59:29,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 20:59:29,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 20:59:29,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 20:59:29,378 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) [2023-02-17 20:59:29,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-17 20:59:29,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 20:59:29,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-17 20:59:29,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 20:59:29,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 20:59:29,459 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 20:59:29,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 20:59:29,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338218722] [2023-02-17 20:59:29,460 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 20:59:29,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42584213] [2023-02-17 20:59:29,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42584213] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 20:59:29,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 20:59:29,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-17 20:59:29,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785948901] [2023-02-17 20:59:29,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 20:59:29,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 20:59:29,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 20:59:29,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 20:59:29,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-17 20:59:29,462 INFO L87 Difference]: Start difference. First operand 23 states and 27 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) [2023-02-17 20:59:29,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 20:59:29,514 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2023-02-17 20:59:29,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 20:59:29,515 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 [2023-02-17 20:59:29,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 20:59:29,516 INFO L225 Difference]: With dead ends: 49 [2023-02-17 20:59:29,516 INFO L226 Difference]: Without dead ends: 40 [2023-02-17 20:59:29,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-02-17 20:59:29,522 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 26 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 20:59:29,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 29 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 20:59:29,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-02-17 20:59:29,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 23. [2023-02-17 20:59:29,529 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) [2023-02-17 20:59:29,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2023-02-17 20:59:29,530 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 14 [2023-02-17 20:59:29,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 20:59:29,531 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2023-02-17 20:59:29,531 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) [2023-02-17 20:59:29,531 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2023-02-17 20:59:29,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-17 20:59:29,532 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 20:59:29,532 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 20:59:29,537 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-02-17 20:59:29,736 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 [2023-02-17 20:59:29,737 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 20:59:29,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 20:59:29,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1842440164, now seen corresponding path program 1 times [2023-02-17 20:59:29,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 20:59:29,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238480093] [2023-02-17 20:59:29,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 20:59:29,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 20:59:29,769 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 20:59:29,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1370157599] [2023-02-17 20:59:29,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 20:59:29,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 20:59:29,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 20:59:29,785 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) [2023-02-17 20:59:29,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-17 20:59:29,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 20:59:29,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-17 20:59:29,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 20:59:29,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 20:59:29,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 20:59:29,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 20:59:29,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 20:59:29,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238480093] [2023-02-17 20:59:29,866 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 20:59:29,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370157599] [2023-02-17 20:59:29,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370157599] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 20:59:29,867 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 20:59:29,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2023-02-17 20:59:29,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886227066] [2023-02-17 20:59:29,867 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 20:59:29,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-17 20:59:29,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 20:59:29,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-17 20:59:29,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-17 20:59:29,868 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 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) [2023-02-17 20:59:29,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 20:59:29,912 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2023-02-17 20:59:29,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-17 20:59:29,912 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 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 14 [2023-02-17 20:59:29,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 20:59:29,913 INFO L225 Difference]: With dead ends: 44 [2023-02-17 20:59:29,913 INFO L226 Difference]: Without dead ends: 37 [2023-02-17 20:59:29,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-02-17 20:59:29,914 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 34 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 20:59:29,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 41 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 20:59:29,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-02-17 20:59:29,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 24. [2023-02-17 20:59:29,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 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) [2023-02-17 20:59:29,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2023-02-17 20:59:29,917 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 14 [2023-02-17 20:59:29,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 20:59:29,917 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2023-02-17 20:59:29,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 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) [2023-02-17 20:59:29,917 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2023-02-17 20:59:29,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-17 20:59:29,918 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 20:59:29,918 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 20:59:29,931 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-02-17 20:59:30,122 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 [2023-02-17 20:59:30,123 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 20:59:30,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 20:59:30,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1667884396, now seen corresponding path program 1 times [2023-02-17 20:59:30,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 20:59:30,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893085574] [2023-02-17 20:59:30,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 20:59:30,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 20:59:30,178 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 20:59:30,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1269072423] [2023-02-17 20:59:30,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 20:59:30,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 20:59:30,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 20:59:30,181 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) [2023-02-17 20:59:30,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-17 20:59:30,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 20:59:30,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-17 20:59:30,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 20:59:30,246 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 20:59:30,246 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 20:59:30,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 20:59:30,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893085574] [2023-02-17 20:59:30,247 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 20:59:30,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269072423] [2023-02-17 20:59:30,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269072423] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 20:59:30,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 20:59:30,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-17 20:59:30,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069785991] [2023-02-17 20:59:30,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 20:59:30,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-17 20:59:30,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 20:59:30,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-17 20:59:30,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-02-17 20:59:30,249 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 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) [2023-02-17 20:59:30,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 20:59:30,284 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2023-02-17 20:59:30,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-17 20:59:30,285 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 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 [2023-02-17 20:59:30,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 20:59:30,285 INFO L225 Difference]: With dead ends: 41 [2023-02-17 20:59:30,285 INFO L226 Difference]: Without dead ends: 27 [2023-02-17 20:59:30,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-02-17 20:59:30,286 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 14 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 20:59:30,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 27 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 20:59:30,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-02-17 20:59:30,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 19. [2023-02-17 20:59:30,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 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) [2023-02-17 20:59:30,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2023-02-17 20:59:30,289 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 16 [2023-02-17 20:59:30,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 20:59:30,289 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2023-02-17 20:59:30,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 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) [2023-02-17 20:59:30,289 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2023-02-17 20:59:30,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-17 20:59:30,290 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 20:59:30,290 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 20:59:30,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-17 20:59:30,500 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 [2023-02-17 20:59:30,502 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 20:59:30,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 20:59:30,505 INFO L85 PathProgramCache]: Analyzing trace with hash 586911962, now seen corresponding path program 1 times [2023-02-17 20:59:30,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 20:59:30,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872384627] [2023-02-17 20:59:30,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 20:59:30,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 20:59:30,523 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 20:59:30,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1829331161] [2023-02-17 20:59:30,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 20:59:30,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 20:59:30,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 20:59:30,529 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) [2023-02-17 20:59:30,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-17 20:59:30,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 20:59:30,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 27 conjunts are in the unsatisfiable core [2023-02-17 20:59:30,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 20:59:30,617 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 10 treesize of output 8 [2023-02-17 20:59:30,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:59:30,620 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 14 [2023-02-17 20:59:30,621 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 [2023-02-17 20:59:30,627 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 [2023-02-17 20:59:30,635 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 50 treesize of output 43 [2023-02-17 20:59:30,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 87 [2023-02-17 20:59:30,644 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 58 treesize of output 15 [2023-02-17 20:59:30,658 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 20:59:30,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 23 [2023-02-17 20:59:30,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 20:59:30,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 20:59:30,727 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_159 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_159) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1)) is different from false [2023-02-17 20:59:30,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-02-17 20:59:30,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 20:59:30,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872384627] [2023-02-17 20:59:30,733 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 20:59:30,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829331161] [2023-02-17 20:59:30,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829331161] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 20:59:30,733 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 20:59:30,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2023-02-17 20:59:30,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057719339] [2023-02-17 20:59:30,734 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 20:59:30,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-17 20:59:30,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 20:59:30,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-17 20:59:30,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=67, Unknown=1, NotChecked=16, Total=110 [2023-02-17 20:59:30,735 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 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) [2023-02-17 20:59:30,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 20:59:30,878 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2023-02-17 20:59:30,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-17 20:59:30,879 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 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) Word has length 16 [2023-02-17 20:59:30,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 20:59:30,879 INFO L225 Difference]: With dead ends: 54 [2023-02-17 20:59:30,879 INFO L226 Difference]: Without dead ends: 52 [2023-02-17 20:59:30,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=243, Unknown=1, NotChecked=34, Total=380 [2023-02-17 20:59:30,880 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 67 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 20:59:30,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 62 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 82 Invalid, 0 Unknown, 33 Unchecked, 0.1s Time] [2023-02-17 20:59:30,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-02-17 20:59:30,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 26. [2023-02-17 20:59:30,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 20:59:30,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2023-02-17 20:59:30,884 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 16 [2023-02-17 20:59:30,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 20:59:30,884 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2023-02-17 20:59:30,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 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) [2023-02-17 20:59:30,885 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2023-02-17 20:59:30,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-17 20:59:30,885 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 20:59:30,885 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 20:59:30,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-17 20:59:31,090 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 [2023-02-17 20:59:31,091 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 20:59:31,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 20:59:31,091 INFO L85 PathProgramCache]: Analyzing trace with hash 798963152, now seen corresponding path program 1 times [2023-02-17 20:59:31,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 20:59:31,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354816144] [2023-02-17 20:59:31,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 20:59:31,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 20:59:31,120 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 20:59:31,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2014402418] [2023-02-17 20:59:31,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 20:59:31,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 20:59:31,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 20:59:31,124 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) [2023-02-17 20:59:31,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-17 20:59:31,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 20:59:31,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 44 conjunts are in the unsatisfiable core [2023-02-17 20:59:31,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 20:59:31,237 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 10 treesize of output 8 [2023-02-17 20:59:31,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:59:31,241 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2023-02-17 20:59:31,244 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 20 treesize of output 20 [2023-02-17 20:59:31,247 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 [2023-02-17 20:59:31,250 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 [2023-02-17 20:59:31,258 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 57 treesize of output 53 [2023-02-17 20:59:31,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:59:31,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:59:31,264 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 42 treesize of output 87 [2023-02-17 20:59:31,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:59:31,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:59:31,272 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 58 treesize of output 15 [2023-02-17 20:59:31,296 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 113 treesize of output 101 [2023-02-17 20:59:31,302 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-17 20:59:31,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:59:31,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:59:31,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:59:31,305 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 94 treesize of output 147 [2023-02-17 20:59:31,316 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 20:59:31,403 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 20:59:31,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 128 treesize of output 105 [2023-02-17 20:59:31,438 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 20:59:31,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 20:59:31,742 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 20:59:31,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 20:59:31,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354816144] [2023-02-17 20:59:31,742 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 20:59:31,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014402418] [2023-02-17 20:59:31,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014402418] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 20:59:31,742 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 20:59:31,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2023-02-17 20:59:31,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957708142] [2023-02-17 20:59:31,742 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 20:59:31,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-17 20:59:31,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 20:59:31,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-17 20:59:31,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2023-02-17 20:59:31,743 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 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) [2023-02-17 20:59:32,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 20:59:32,991 INFO L93 Difference]: Finished difference Result 82 states and 92 transitions. [2023-02-17 20:59:32,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-02-17 20:59:32,992 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 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) Word has length 20 [2023-02-17 20:59:32,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 20:59:32,992 INFO L225 Difference]: With dead ends: 82 [2023-02-17 20:59:32,992 INFO L226 Difference]: Without dead ends: 80 [2023-02-17 20:59:32,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=291, Invalid=1041, Unknown=0, NotChecked=0, Total=1332 [2023-02-17 20:59:32,993 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 142 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-17 20:59:32,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 108 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-17 20:59:32,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-02-17 20:59:33,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 46. [2023-02-17 20:59:33,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.2444444444444445) internal successors, (56), 45 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) [2023-02-17 20:59:33,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 56 transitions. [2023-02-17 20:59:33,009 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 56 transitions. Word has length 20 [2023-02-17 20:59:33,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 20:59:33,009 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 56 transitions. [2023-02-17 20:59:33,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 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) [2023-02-17 20:59:33,009 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions. [2023-02-17 20:59:33,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-17 20:59:33,010 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 20:59:33,010 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 20:59:33,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-17 20:59:33,215 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 [2023-02-17 20:59:33,215 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 20:59:33,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 20:59:33,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1334592554, now seen corresponding path program 2 times [2023-02-17 20:59:33,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 20:59:33,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494251755] [2023-02-17 20:59:33,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 20:59:33,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 20:59:33,243 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 20:59:33,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [833192613] [2023-02-17 20:59:33,244 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 20:59:33,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 20:59:33,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 20:59:33,245 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) [2023-02-17 20:59:33,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-17 20:59:33,298 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 20:59:33,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 20:59:33,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-17 20:59:33,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 20:59:33,311 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-17 20:59:33,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 20:59:33,324 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-17 20:59:33,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 20:59:33,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494251755] [2023-02-17 20:59:33,324 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 20:59:33,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833192613] [2023-02-17 20:59:33,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833192613] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 20:59:33,324 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 20:59:33,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-02-17 20:59:33,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40449569] [2023-02-17 20:59:33,324 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 20:59:33,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-17 20:59:33,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 20:59:33,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-17 20:59:33,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-02-17 20:59:33,325 INFO L87 Difference]: Start difference. First operand 46 states and 56 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 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) [2023-02-17 20:59:33,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 20:59:33,409 INFO L93 Difference]: Finished difference Result 103 states and 118 transitions. [2023-02-17 20:59:33,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-17 20:59:33,409 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 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) Word has length 20 [2023-02-17 20:59:33,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 20:59:33,410 INFO L225 Difference]: With dead ends: 103 [2023-02-17 20:59:33,410 INFO L226 Difference]: Without dead ends: 80 [2023-02-17 20:59:33,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2023-02-17 20:59:33,410 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 30 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 20:59:33,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 59 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 20:59:33,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-02-17 20:59:33,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 50. [2023-02-17 20:59:33,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.2244897959183674) internal successors, (60), 49 states have internal predecessors, (60), 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) [2023-02-17 20:59:33,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2023-02-17 20:59:33,420 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 20 [2023-02-17 20:59:33,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 20:59:33,420 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2023-02-17 20:59:33,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 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) [2023-02-17 20:59:33,421 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2023-02-17 20:59:33,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-17 20:59:33,421 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 20:59:33,421 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 20:59:33,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-17 20:59:33,631 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 [2023-02-17 20:59:33,632 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 20:59:33,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 20:59:33,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1146782124, now seen corresponding path program 3 times [2023-02-17 20:59:33,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 20:59:33,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338257694] [2023-02-17 20:59:33,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 20:59:33,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 20:59:33,657 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 20:59:33,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [608785099] [2023-02-17 20:59:33,657 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 20:59:33,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 20:59:33,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 20:59:33,659 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) [2023-02-17 20:59:33,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-17 20:59:33,767 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-02-17 20:59:33,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 20:59:33,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-17 20:59:33,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 20:59:33,788 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 20:59:33,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 20:59:33,820 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 20:59:33,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 20:59:33,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338257694] [2023-02-17 20:59:33,821 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 20:59:33,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608785099] [2023-02-17 20:59:33,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608785099] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 20:59:33,821 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 20:59:33,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2023-02-17 20:59:33,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835907972] [2023-02-17 20:59:33,823 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 20:59:33,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-17 20:59:33,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 20:59:33,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-17 20:59:33,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-02-17 20:59:33,824 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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) [2023-02-17 20:59:33,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 20:59:33,962 INFO L93 Difference]: Finished difference Result 113 states and 124 transitions. [2023-02-17 20:59:33,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-17 20:59:33,962 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 22 [2023-02-17 20:59:33,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 20:59:33,963 INFO L225 Difference]: With dead ends: 113 [2023-02-17 20:59:33,963 INFO L226 Difference]: Without dead ends: 81 [2023-02-17 20:59:33,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 28 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=163, Invalid=389, Unknown=0, NotChecked=0, Total=552 [2023-02-17 20:59:33,964 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 146 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 20:59:33,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 65 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 20:59:33,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-02-17 20:59:33,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 48. [2023-02-17 20:59:33,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.127659574468085) internal successors, (53), 47 states have internal predecessors, (53), 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) [2023-02-17 20:59:33,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2023-02-17 20:59:33,971 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 22 [2023-02-17 20:59:33,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 20:59:33,971 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2023-02-17 20:59:33,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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) [2023-02-17 20:59:33,971 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2023-02-17 20:59:33,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-17 20:59:33,972 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 20:59:33,972 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 20:59:34,001 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-02-17 20:59:34,178 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 [2023-02-17 20:59:34,178 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 20:59:34,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 20:59:34,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1083970380, now seen corresponding path program 2 times [2023-02-17 20:59:34,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 20:59:34,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304345073] [2023-02-17 20:59:34,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 20:59:34,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 20:59:34,240 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 20:59:34,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [159570914] [2023-02-17 20:59:34,240 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 20:59:34,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 20:59:34,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 20:59:34,255 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) [2023-02-17 20:59:34,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-17 20:59:34,306 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 20:59:34,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 20:59:34,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-17 20:59:34,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 20:59:34,339 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-17 20:59:34,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 20:59:34,355 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-17 20:59:34,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 20:59:34,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304345073] [2023-02-17 20:59:34,356 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 20:59:34,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159570914] [2023-02-17 20:59:34,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159570914] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 20:59:34,356 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 20:59:34,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2023-02-17 20:59:34,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436274690] [2023-02-17 20:59:34,357 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 20:59:34,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-17 20:59:34,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 20:59:34,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-17 20:59:34,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-02-17 20:59:34,370 INFO L87 Difference]: Start difference. First operand 48 states and 53 transitions. Second operand has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 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) [2023-02-17 20:59:34,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 20:59:34,502 INFO L93 Difference]: Finished difference Result 83 states and 88 transitions. [2023-02-17 20:59:34,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-02-17 20:59:34,503 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 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 [2023-02-17 20:59:34,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 20:59:34,503 INFO L225 Difference]: With dead ends: 83 [2023-02-17 20:59:34,503 INFO L226 Difference]: Without dead ends: 67 [2023-02-17 20:59:34,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=185, Invalid=465, Unknown=0, NotChecked=0, Total=650 [2023-02-17 20:59:34,504 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 94 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 20:59:34,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 103 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 20:59:34,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-02-17 20:59:34,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 40. [2023-02-17 20:59:34,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 39 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) [2023-02-17 20:59:34,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2023-02-17 20:59:34,512 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 24 [2023-02-17 20:59:34,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 20:59:34,512 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2023-02-17 20:59:34,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 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) [2023-02-17 20:59:34,512 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2023-02-17 20:59:34,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-17 20:59:34,513 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 20:59:34,513 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 20:59:34,541 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-02-17 20:59:34,718 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 [2023-02-17 20:59:34,719 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 20:59:34,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 20:59:34,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1049585326, now seen corresponding path program 4 times [2023-02-17 20:59:34,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 20:59:34,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051301799] [2023-02-17 20:59:34,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 20:59:34,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 20:59:34,733 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 20:59:34,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [401558942] [2023-02-17 20:59:34,734 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-17 20:59:34,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 20:59:34,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 20:59:34,735 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) [2023-02-17 20:59:34,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-17 20:59:35,064 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-17 20:59:35,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 20:59:35,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 45 conjunts are in the unsatisfiable core [2023-02-17 20:59:35,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 20:59:35,071 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 10 treesize of output 8 [2023-02-17 20:59:35,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:59:35,074 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 14 [2023-02-17 20:59:35,075 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 [2023-02-17 20:59:35,079 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 [2023-02-17 20:59:35,084 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 [2023-02-17 20:59:35,104 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 [2023-02-17 20:59:35,112 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 58 treesize of output 51 [2023-02-17 20:59:35,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:59:35,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:59:35,115 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 50 treesize of output 103 [2023-02-17 20:59:35,120 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 20:59:35,151 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 58 treesize of output 51 [2023-02-17 20:59:35,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:59:35,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:59:35,154 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 50 treesize of output 103 [2023-02-17 20:59:35,157 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 20:59:35,171 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 50 treesize of output 43 [2023-02-17 20:59:35,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:59:35,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:59:35,184 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 42 treesize of output 87 [2023-02-17 20:59:35,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:59:35,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:59:35,190 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 58 treesize of output 15 [2023-02-17 20:59:35,204 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 20:59:35,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 23 [2023-02-17 20:59:35,211 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 20:59:35,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 20:59:35,721 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 20:59:35,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 20:59:35,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051301799] [2023-02-17 20:59:35,722 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 20:59:35,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401558942] [2023-02-17 20:59:35,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401558942] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 20:59:35,722 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 20:59:35,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2023-02-17 20:59:35,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724785288] [2023-02-17 20:59:35,722 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 20:59:35,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-17 20:59:35,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 20:59:35,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-17 20:59:35,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=276, Unknown=3, NotChecked=0, Total=380 [2023-02-17 20:59:35,723 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 20 states, 20 states have (on average 2.05) internal successors, (41), 20 states have internal predecessors, (41), 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) [2023-02-17 20:59:36,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 20:59:36,529 INFO L93 Difference]: Finished difference Result 111 states and 121 transitions. [2023-02-17 20:59:36,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-02-17 20:59:36,553 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.05) internal successors, (41), 20 states have internal predecessors, (41), 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 [2023-02-17 20:59:36,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 20:59:36,555 INFO L225 Difference]: With dead ends: 111 [2023-02-17 20:59:36,555 INFO L226 Difference]: Without dead ends: 109 [2023-02-17 20:59:36,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 23 SyntacticMatches, 5 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=311, Invalid=808, Unknown=3, NotChecked=0, Total=1122 [2023-02-17 20:59:36,556 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 176 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-17 20:59:36,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 168 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-17 20:59:36,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-02-17 20:59:36,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 49. [2023-02-17 20:59:36,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 48 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) [2023-02-17 20:59:36,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2023-02-17 20:59:36,572 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 24 [2023-02-17 20:59:36,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 20:59:36,572 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2023-02-17 20:59:36,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.05) internal successors, (41), 20 states have internal predecessors, (41), 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) [2023-02-17 20:59:36,572 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2023-02-17 20:59:36,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-17 20:59:36,575 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 20:59:36,575 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 20:59:36,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-02-17 20:59:36,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-02-17 20:59:36,782 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 20:59:36,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 20:59:36,782 INFO L85 PathProgramCache]: Analyzing trace with hash -55017726, now seen corresponding path program 3 times [2023-02-17 20:59:36,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 20:59:36,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684332589] [2023-02-17 20:59:36,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 20:59:36,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 20:59:36,802 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 20:59:36,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1537941904] [2023-02-17 20:59:36,802 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 20:59:36,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 20:59:36,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 20:59:36,804 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 20:59:36,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-17 20:59:37,079 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-02-17 20:59:37,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 20:59:37,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 62 conjunts are in the unsatisfiable core [2023-02-17 20:59:37,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 20:59:37,099 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 10 treesize of output 8 [2023-02-17 20:59:37,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:59:37,102 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2023-02-17 20:59:37,106 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 20 treesize of output 20 [2023-02-17 20:59:37,108 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 [2023-02-17 20:59:37,112 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 [2023-02-17 20:59:37,119 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 119 treesize of output 111 [2023-02-17 20:59:37,122 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-17 20:59:37,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:59:37,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:59:37,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:59:37,126 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 100 treesize of output 177 [2023-02-17 20:59:37,148 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 20:59:37,165 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 115 treesize of output 103 [2023-02-17 20:59:37,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 155 [2023-02-17 20:59:37,175 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 20:59:37,198 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 203 treesize of output 183 [2023-02-17 20:59:37,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:59:37,201 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-17 20:59:37,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:59:37,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:59:37,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:59:37,204 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 126 treesize of output 203 [2023-02-17 20:59:37,211 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 20:59:37,249 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 445 treesize of output 401 [2023-02-17 20:59:37,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:59:37,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:59:37,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:59:37,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:59:37,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:59:37,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:59:37,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:59:37,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:59:37,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 230 treesize of output 313 [2023-02-17 20:59:37,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:59:37,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:59:37,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:59:37,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:59:37,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:59:37,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:59:37,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 331 treesize of output 225 [2023-02-17 20:59:38,260 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 20:59:38,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 58 select indices, 58 select index equivalence classes, 15 disjoint index pairs (out of 1653 index pairs), introduced 58 new quantified variables, introduced 1653 case distinctions, treesize of input 1853 treesize of output 3643