./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/ncomp.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a31fd051 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-fpi/ncomp.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c3d1ff002f6e6cf179cc6204a129c133a3beda704ea9fff27ad69a10f5c1f33d --- Real Ultimate output --- This is Ultimate 0.2.2-?-a31fd05 [2023-02-15 10:06:27,793 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 10:06:27,795 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 10:06:27,827 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 10:06:27,828 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 10:06:27,833 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 10:06:27,834 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 10:06:27,835 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 10:06:27,836 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 10:06:27,837 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 10:06:27,837 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 10:06:27,838 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 10:06:27,838 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 10:06:27,839 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 10:06:27,840 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 10:06:27,841 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 10:06:27,844 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 10:06:27,847 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 10:06:27,849 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 10:06:27,850 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 10:06:27,851 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 10:06:27,854 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 10:06:27,854 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 10:06:27,855 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 10:06:27,856 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 10:06:27,857 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 10:06:27,857 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 10:06:27,857 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 10:06:27,857 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 10:06:27,858 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 10:06:27,858 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 10:06:27,859 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 10:06:27,859 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 10:06:27,859 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 10:06:27,860 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 10:06:27,861 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 10:06:27,861 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 10:06:27,862 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 10:06:27,862 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 10:06:27,863 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 10:06:27,864 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 10:06:27,865 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 10:06:27,892 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 10:06:27,892 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 10:06:27,892 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 10:06:27,892 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 10:06:27,893 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 10:06:27,893 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 10:06:27,894 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 10:06:27,894 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 10:06:27,894 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 10:06:27,894 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 10:06:27,895 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 10:06:27,895 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 10:06:27,895 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 10:06:27,895 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 10:06:27,895 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 10:06:27,896 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 10:06:27,896 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 10:06:27,896 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 10:06:27,896 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 10:06:27,896 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 10:06:27,896 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 10:06:27,896 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 10:06:27,897 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 10:06:27,897 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 10:06:27,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 10:06:27,897 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 10:06:27,897 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 10:06:27,897 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 10:06:27,898 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 10:06:27,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 10:06:27,898 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 10:06:27,899 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 10:06:27,899 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 10:06:27,899 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 10:06:27,899 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 10:06:27,899 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3d1ff002f6e6cf179cc6204a129c133a3beda704ea9fff27ad69a10f5c1f33d [2023-02-15 10:06:28,084 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 10:06:28,115 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 10:06:28,117 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 10:06:28,118 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 10:06:28,118 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 10:06:28,119 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/ncomp.c [2023-02-15 10:06:29,094 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 10:06:29,218 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 10:06:29,218 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ncomp.c [2023-02-15 10:06:29,223 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd992fbd6/f25ff340c1a84d5f9d2a10fddb5989f0/FLAG12c2d0492 [2023-02-15 10:06:29,234 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd992fbd6/f25ff340c1a84d5f9d2a10fddb5989f0 [2023-02-15 10:06:29,236 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 10:06:29,237 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 10:06:29,239 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 10:06:29,239 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 10:06:29,242 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 10:06:29,242 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 10:06:29" (1/1) ... [2023-02-15 10:06:29,243 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a15ed70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:06:29, skipping insertion in model container [2023-02-15 10:06:29,243 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 10:06:29" (1/1) ... [2023-02-15 10:06:29,248 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 10:06:29,262 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 10:06:29,353 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ncomp.c[588,601] [2023-02-15 10:06:29,375 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 10:06:29,381 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 10:06:29,392 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ncomp.c[588,601] [2023-02-15 10:06:29,398 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 10:06:29,425 INFO L208 MainTranslator]: Completed translation [2023-02-15 10:06:29,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:06:29 WrapperNode [2023-02-15 10:06:29,425 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 10:06:29,426 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 10:06:29,426 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 10:06:29,426 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 10:06:29,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:06:29" (1/1) ... [2023-02-15 10:06:29,436 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:06:29" (1/1) ... [2023-02-15 10:06:29,468 INFO L138 Inliner]: procedures = 16, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 97 [2023-02-15 10:06:29,469 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 10:06:29,469 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 10:06:29,469 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 10:06:29,469 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 10:06:29,475 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:06:29" (1/1) ... [2023-02-15 10:06:29,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:06:29" (1/1) ... [2023-02-15 10:06:29,477 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:06:29" (1/1) ... [2023-02-15 10:06:29,479 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:06:29" (1/1) ... [2023-02-15 10:06:29,483 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:06:29" (1/1) ... [2023-02-15 10:06:29,493 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:06:29" (1/1) ... [2023-02-15 10:06:29,494 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:06:29" (1/1) ... [2023-02-15 10:06:29,494 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:06:29" (1/1) ... [2023-02-15 10:06:29,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 10:06:29,496 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 10:06:29,496 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 10:06:29,497 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 10:06:29,497 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:06:29" (1/1) ... [2023-02-15 10:06:29,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 10:06:29,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:06:29,528 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-15 10:06:29,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-15 10:06:29,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 10:06:29,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 10:06:29,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-15 10:06:29,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-15 10:06:29,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 10:06:29,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 10:06:29,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-15 10:06:29,606 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 10:06:29,607 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 10:06:29,768 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 10:06:29,772 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 10:06:29,772 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2023-02-15 10:06:29,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 10:06:29 BoogieIcfgContainer [2023-02-15 10:06:29,774 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 10:06:29,775 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 10:06:29,775 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 10:06:29,777 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 10:06:29,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 10:06:29" (1/3) ... [2023-02-15 10:06:29,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@210813d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 10:06:29, skipping insertion in model container [2023-02-15 10:06:29,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:06:29" (2/3) ... [2023-02-15 10:06:29,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@210813d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 10:06:29, skipping insertion in model container [2023-02-15 10:06:29,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 10:06:29" (3/3) ... [2023-02-15 10:06:29,779 INFO L112 eAbstractionObserver]: Analyzing ICFG ncomp.c [2023-02-15 10:06:29,790 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 10:06:29,790 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 10:06:29,818 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 10:06:29,822 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;@34d50c05, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 10:06:29,822 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 10:06:29,826 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:06:29,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-15 10:06:29,830 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:06:29,830 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:06:29,830 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:06:29,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:06:29,834 INFO L85 PathProgramCache]: Analyzing trace with hash -592971038, now seen corresponding path program 1 times [2023-02-15 10:06:29,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:06:29,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017108536] [2023-02-15 10:06:29,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:06:29,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:06:29,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:06:29,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:06:29,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017108536] [2023-02-15 10:06:29,986 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-15 10:06:29,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712629096] [2023-02-15 10:06:29,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:06:29,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:06:29,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:06:29,994 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 10:06:29,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 10:06:30,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:06:30,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-15 10:06:30,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:06:30,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:06:30,176 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 10:06:30,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712629096] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:06:30,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:06:30,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 10:06:30,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21725815] [2023-02-15 10:06:30,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:06:30,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-15 10:06:30,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:06:30,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-15 10:06:30,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 10:06:30,226 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:06:30,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:06:30,236 INFO L93 Difference]: Finished difference Result 44 states and 62 transitions. [2023-02-15 10:06:30,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-15 10:06:30,237 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-02-15 10:06:30,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:06:30,242 INFO L225 Difference]: With dead ends: 44 [2023-02-15 10:06:30,246 INFO L226 Difference]: Without dead ends: 20 [2023-02-15 10:06:30,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 10:06:30,250 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 10:06:30,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 10:06:30,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-02-15 10:06:30,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-02-15 10:06:30,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:06:30,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2023-02-15 10:06:30,282 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 14 [2023-02-15 10:06:30,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:06:30,283 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2023-02-15 10:06:30,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:06:30,283 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2023-02-15 10:06:30,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-15 10:06:30,284 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:06:30,284 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:06:30,296 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-15 10:06:30,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-02-15 10:06:30,490 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:06:30,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:06:30,491 INFO L85 PathProgramCache]: Analyzing trace with hash 108093540, now seen corresponding path program 1 times [2023-02-15 10:06:30,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:06:30,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794606512] [2023-02-15 10:06:30,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:06:30,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:06:30,547 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 10:06:30,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1794845311] [2023-02-15 10:06:30,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:06:30,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:06:30,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:06:30,563 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 10:06:30,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 10:06:30,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:06:30,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-15 10:06:30,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:06:30,761 INFO L321 Elim1Store]: treesize reduction 117, result has 35.4 percent of original size [2023-02-15 10:06:30,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 92 treesize of output 229 [2023-02-15 10:06:30,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 10:06:30,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 10:06:30,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 10:06:30,890 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:06:30,895 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:06:30,908 INFO L321 Elim1Store]: treesize reduction 25, result has 24.2 percent of original size [2023-02-15 10:06:30,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 104 treesize of output 103 [2023-02-15 10:06:30,937 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 10:06:30,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 10:06:31,007 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:06:31,009 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:06:31,011 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:06:31,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 95 [2023-02-15 10:06:31,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 10:06:31,198 INFO L321 Elim1Store]: treesize reduction 28, result has 47.2 percent of original size [2023-02-15 10:06:31,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 85 [2023-02-15 10:06:31,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 10:06:31,410 INFO L321 Elim1Store]: treesize reduction 201, result has 26.6 percent of original size [2023-02-15 10:06:31,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 186 treesize of output 258 [2023-02-15 10:06:31,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 10:06:32,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:06:32,131 INFO L321 Elim1Store]: treesize reduction 43, result has 2.3 percent of original size [2023-02-15 10:06:32,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 70 treesize of output 16 [2023-02-15 10:06:32,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:06:32,158 INFO L321 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2023-02-15 10:06:32,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 82 treesize of output 21 [2023-02-15 10:06:32,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:06:32,332 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 10:06:32,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:06:32,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794606512] [2023-02-15 10:06:32,335 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 10:06:32,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794845311] [2023-02-15 10:06:32,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794845311] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:06:32,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:06:32,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-15 10:06:32,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931303410] [2023-02-15 10:06:32,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:06:32,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-15 10:06:32,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:06:32,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-15 10:06:32,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-02-15 10:06:32,338 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:06:32,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:06:32,431 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2023-02-15 10:06:32,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-15 10:06:32,431 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-02-15 10:06:32,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:06:32,433 INFO L225 Difference]: With dead ends: 39 [2023-02-15 10:06:32,433 INFO L226 Difference]: Without dead ends: 37 [2023-02-15 10:06:32,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-02-15 10:06:32,435 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 49 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 10:06:32,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 51 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 10:06:32,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-02-15 10:06:32,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 28. [2023-02-15 10:06:32,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:06:32,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2023-02-15 10:06:32,445 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 14 [2023-02-15 10:06:32,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:06:32,445 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2023-02-15 10:06:32,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:06:32,446 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2023-02-15 10:06:32,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-15 10:06:32,446 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:06:32,446 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:06:32,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-15 10:06:32,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-02-15 10:06:32,652 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:06:32,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:06:32,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1850906398, now seen corresponding path program 1 times [2023-02-15 10:06:32,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:06:32,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691569714] [2023-02-15 10:06:32,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:06:32,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:06:32,693 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 10:06:32,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [765191821] [2023-02-15 10:06:32,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:06:32,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:06:32,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:06:32,697 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 10:06:32,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-15 10:06:32,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:06:32,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 10:06:32,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:06:32,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:06:32,776 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 10:06:32,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:06:32,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691569714] [2023-02-15 10:06:32,776 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 10:06:32,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765191821] [2023-02-15 10:06:32,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765191821] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:06:32,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:06:32,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 10:06:32,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951878983] [2023-02-15 10:06:32,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:06:32,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 10:06:32,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:06:32,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 10:06:32,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-15 10:06:32,778 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:06:32,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:06:32,840 INFO L93 Difference]: Finished difference Result 62 states and 73 transitions. [2023-02-15 10:06:32,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 10:06:32,841 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-02-15 10:06:32,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:06:32,841 INFO L225 Difference]: With dead ends: 62 [2023-02-15 10:06:32,841 INFO L226 Difference]: Without dead ends: 50 [2023-02-15 10:06:32,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-02-15 10:06:32,842 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 29 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 10:06:32,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 32 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 10:06:32,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-02-15 10:06:32,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 31. [2023-02-15 10:06:32,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2) internal successors, (36), 30 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:06:32,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2023-02-15 10:06:32,847 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 16 [2023-02-15 10:06:32,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:06:32,847 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2023-02-15 10:06:32,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:06:32,847 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2023-02-15 10:06:32,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-15 10:06:32,848 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:06:32,848 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:06:32,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-15 10:06:33,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:06:33,065 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:06:33,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:06:33,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1060218526, now seen corresponding path program 1 times [2023-02-15 10:06:33,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:06:33,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924444143] [2023-02-15 10:06:33,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:06:33,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:06:33,089 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 10:06:33,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1892937924] [2023-02-15 10:06:33,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:06:33,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:06:33,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:06:33,094 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 10:06:33,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-15 10:06:33,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:06:33,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 10:06:33,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:06:33,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:06:33,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 10:06:33,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:06:33,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:06:33,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924444143] [2023-02-15 10:06:33,186 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 10:06:33,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892937924] [2023-02-15 10:06:33,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892937924] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 10:06:33,187 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 10:06:33,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2023-02-15 10:06:33,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37226584] [2023-02-15 10:06:33,187 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 10:06:33,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 10:06:33,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:06:33,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 10:06:33,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-15 10:06:33,188 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:06:33,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:06:33,267 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2023-02-15 10:06:33,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-15 10:06:33,267 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-02-15 10:06:33,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:06:33,268 INFO L225 Difference]: With dead ends: 53 [2023-02-15 10:06:33,268 INFO L226 Difference]: Without dead ends: 44 [2023-02-15 10:06:33,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-02-15 10:06:33,269 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 34 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 10:06:33,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 49 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 10:06:33,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-02-15 10:06:33,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 30. [2023-02-15 10:06:33,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:06:33,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2023-02-15 10:06:33,281 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 16 [2023-02-15 10:06:33,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:06:33,282 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2023-02-15 10:06:33,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:06:33,282 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2023-02-15 10:06:33,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-15 10:06:33,282 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:06:33,283 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:06:33,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-15 10:06:33,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:06:33,488 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:06:33,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:06:33,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1120615462, now seen corresponding path program 1 times [2023-02-15 10:06:33,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:06:33,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17328067] [2023-02-15 10:06:33,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:06:33,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:06:33,502 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 10:06:33,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [57118774] [2023-02-15 10:06:33,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:06:33,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:06:33,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:06:33,518 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 10:06:33,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-15 10:06:33,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:06:33,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-15 10:06:33,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:06:33,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:06:33,611 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 10:06:33,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:06:33,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17328067] [2023-02-15 10:06:33,612 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 10:06:33,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57118774] [2023-02-15 10:06:33,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57118774] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:06:33,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:06:33,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-15 10:06:33,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749536038] [2023-02-15 10:06:33,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:06:33,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 10:06:33,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:06:33,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 10:06:33,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-02-15 10:06:33,614 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:06:33,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:06:33,666 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2023-02-15 10:06:33,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-15 10:06:33,667 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-02-15 10:06:33,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:06:33,667 INFO L225 Difference]: With dead ends: 48 [2023-02-15 10:06:33,668 INFO L226 Difference]: Without dead ends: 32 [2023-02-15 10:06:33,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-02-15 10:06:33,668 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 18 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 10:06:33,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 29 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 10:06:33,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-02-15 10:06:33,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2023-02-15 10:06:33,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:06:33,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2023-02-15 10:06:33,672 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 18 [2023-02-15 10:06:33,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:06:33,672 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2023-02-15 10:06:33,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:06:33,672 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2023-02-15 10:06:33,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-15 10:06:33,673 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:06:33,673 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:06:33,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-15 10:06:33,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:06:33,878 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:06:33,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:06:33,879 INFO L85 PathProgramCache]: Analyzing trace with hash 615941150, now seen corresponding path program 1 times [2023-02-15 10:06:33,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:06:33,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307195682] [2023-02-15 10:06:33,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:06:33,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:06:33,906 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 10:06:33,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1284165225] [2023-02-15 10:06:33,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:06:33,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:06:33,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:06:33,912 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 10:06:33,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-15 10:06:34,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:06:34,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 32 conjunts are in the unsatisfiable core [2023-02-15 10:06:34,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:06:34,127 INFO L321 Elim1Store]: treesize reduction 117, result has 35.4 percent of original size [2023-02-15 10:06:34,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 92 treesize of output 229 [2023-02-15 10:06:34,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 10:06:34,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 10:06:34,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 10:06:34,234 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:06:34,239 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:06:34,248 INFO L321 Elim1Store]: treesize reduction 25, result has 24.2 percent of original size [2023-02-15 10:06:34,249 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 120 treesize of output 119 [2023-02-15 10:06:34,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 10:06:34,274 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-15 10:06:34,282 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-15 10:06:34,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 10:06:34,316 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:06:34,319 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:06:34,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 111 [2023-02-15 10:06:34,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 10:06:34,381 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:06:34,383 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 52 treesize of output 15 [2023-02-15 10:06:34,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 10:06:34,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:06:34,411 INFO L321 Elim1Store]: treesize reduction 43, result has 2.3 percent of original size [2023-02-15 10:06:34,411 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 62 treesize of output 21 [2023-02-15 10:06:34,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 10:06:34,457 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2023-02-15 10:06:34,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:06:34,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:06:34,535 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2023-02-15 10:06:34,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 56 [2023-02-15 10:06:34,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 10:06:34,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-15 10:06:34,635 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 21 treesize of output 20 [2023-02-15 10:06:34,669 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:06:34,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 10:06:34,842 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:06:34,843 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:06:34,843 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:06:34,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:06:34,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307195682] [2023-02-15 10:06:34,844 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 10:06:34,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284165225] [2023-02-15 10:06:34,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284165225] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 10:06:34,844 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 10:06:34,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 16 [2023-02-15 10:06:34,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87277125] [2023-02-15 10:06:34,844 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 10:06:34,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-15 10:06:34,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:06:34,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-15 10:06:34,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=183, Unknown=5, NotChecked=0, Total=240 [2023-02-15 10:06:34,846 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:06:43,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-15 10:06:43,274 WARN L837 $PredicateComparison]: unable to prove that (and (let ((.cse0 (<= (mod c_~N~0 4294967296) 536870911))) (or (and (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1) .cse0) (and (not .cse0) (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 0)))) (forall ((v_ArrVal_313 (Array Int Int))) (= c_~N~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_ArrVal_313) |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset|)))) is different from false [2023-02-15 10:06:53,545 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_314 Int)) (= c_~N~0 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~c~0#1.base|) (+ (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8) |c_ULTIMATE.start_main_~c~0#1.offset|) v_ArrVal_314) |c_ULTIMATE.start_main_~c~0#1.offset|))) (forall ((v_ArrVal_313 (Array Int Int))) (= c_~N~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_ArrVal_313) |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset|)))) is different from false [2023-02-15 10:07:04,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:07:04,276 INFO L93 Difference]: Finished difference Result 98 states and 111 transitions. [2023-02-15 10:07:04,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-02-15 10:07:04,277 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-02-15 10:07:04,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:07:04,278 INFO L225 Difference]: With dead ends: 98 [2023-02-15 10:07:04,278 INFO L226 Difference]: Without dead ends: 96 [2023-02-15 10:07:04,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 27.1s TimeCoverageRelationStatistics Valid=283, Invalid=889, Unknown=26, NotChecked=134, Total=1332 [2023-02-15 10:07:04,279 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 194 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 35 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 2 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-02-15 10:07:04,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 92 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 179 Invalid, 16 Unknown, 2 Unchecked, 2.4s Time] [2023-02-15 10:07:04,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-02-15 10:07:04,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 46. [2023-02-15 10:07:04,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 45 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:07:04,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2023-02-15 10:07:04,293 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 20 [2023-02-15 10:07:04,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:07:04,294 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2023-02-15 10:07:04,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:07:04,294 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2023-02-15 10:07:04,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-15 10:07:04,295 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:07:04,295 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:07:04,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-15 10:07:04,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:07:04,502 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:07:04,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:07:04,503 INFO L85 PathProgramCache]: Analyzing trace with hash 678263444, now seen corresponding path program 1 times [2023-02-15 10:07:04,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:07:04,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324653292] [2023-02-15 10:07:04,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:07:04,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:07:04,545 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 10:07:04,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1173329102] [2023-02-15 10:07:04,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:07:04,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:07:04,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:07:04,557 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 10:07:04,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-15 10:07:04,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:07:04,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 48 conjunts are in the unsatisfiable core [2023-02-15 10:07:04,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:07:04,723 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-15 10:07:04,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2023-02-15 10:07:04,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:07:04,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:07:04,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:07:04,734 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 22 [2023-02-15 10:07:04,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 10:07:04,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 10:07:04,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2023-02-15 10:07:04,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2023-02-15 10:07:04,863 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 38 treesize of output 32 [2023-02-15 10:07:05,056 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 10:07:05,056 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 1 case distinctions, treesize of input 63 treesize of output 29 [2023-02-15 10:07:05,068 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:07:05,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 10:07:08,290 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:07:08,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:07:08,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324653292] [2023-02-15 10:07:08,291 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 10:07:08,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173329102] [2023-02-15 10:07:08,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173329102] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 10:07:08,291 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 10:07:08,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 20 [2023-02-15 10:07:08,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072788412] [2023-02-15 10:07:08,292 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 10:07:08,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-15 10:07:08,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:07:08,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-15 10:07:08,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=303, Unknown=8, NotChecked=0, Total=380 [2023-02-15 10:07:08,293 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand has 20 states, 20 states have (on average 2.15) internal successors, (43), 20 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:07:11,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:07:11,137 INFO L93 Difference]: Finished difference Result 119 states and 140 transitions. [2023-02-15 10:07:11,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-02-15 10:07:11,137 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.15) internal successors, (43), 20 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-02-15 10:07:11,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:07:11,138 INFO L225 Difference]: With dead ends: 119 [2023-02-15 10:07:11,138 INFO L226 Difference]: Without dead ends: 117 [2023-02-15 10:07:11,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=352, Invalid=1280, Unknown=8, NotChecked=0, Total=1640 [2023-02-15 10:07:11,140 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 209 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-02-15 10:07:11,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 123 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-02-15 10:07:11,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-02-15 10:07:11,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 62. [2023-02-15 10:07:11,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.2622950819672132) internal successors, (77), 61 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:07:11,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 77 transitions. [2023-02-15 10:07:11,151 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 77 transitions. Word has length 24 [2023-02-15 10:07:11,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:07:11,151 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 77 transitions. [2023-02-15 10:07:11,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.15) internal successors, (43), 20 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:07:11,151 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 77 transitions. [2023-02-15 10:07:11,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-15 10:07:11,152 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:07:11,152 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:07:11,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-15 10:07:11,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:07:11,358 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:07:11,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:07:11,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1455292262, now seen corresponding path program 2 times [2023-02-15 10:07:11,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:07:11,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056092710] [2023-02-15 10:07:11,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:07:11,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:07:11,409 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 10:07:11,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1672660635] [2023-02-15 10:07:11,409 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 10:07:11,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:07:11,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:07:11,411 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 10:07:11,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-15 10:07:11,519 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 10:07:11,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 10:07:11,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-15 10:07:11,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:07:11,590 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 10:07:11,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 10:07:11,665 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 10:07:11,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:07:11,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056092710] [2023-02-15 10:07:11,666 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 10:07:11,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672660635] [2023-02-15 10:07:11,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672660635] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 10:07:11,666 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 10:07:11,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-02-15 10:07:11,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830282732] [2023-02-15 10:07:11,666 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 10:07:11,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-15 10:07:11,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:07:11,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-15 10:07:11,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-02-15 10:07:11,668 INFO L87 Difference]: Start difference. First operand 62 states and 77 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:07:12,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:07:12,105 INFO L93 Difference]: Finished difference Result 162 states and 187 transitions. [2023-02-15 10:07:12,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-15 10:07:12,105 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-02-15 10:07:12,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:07:12,106 INFO L225 Difference]: With dead ends: 162 [2023-02-15 10:07:12,106 INFO L226 Difference]: Without dead ends: 100 [2023-02-15 10:07:12,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=180, Invalid=420, Unknown=0, NotChecked=0, Total=600 [2023-02-15 10:07:12,108 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 125 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 10:07:12,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 78 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 10:07:12,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-02-15 10:07:12,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 59. [2023-02-15 10:07:12,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.1379310344827587) internal successors, (66), 58 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:07:12,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2023-02-15 10:07:12,119 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 24 [2023-02-15 10:07:12,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:07:12,119 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2023-02-15 10:07:12,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:07:12,119 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2023-02-15 10:07:12,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-15 10:07:12,120 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:07:12,120 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:07:12,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-15 10:07:12,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-02-15 10:07:12,326 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:07:12,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:07:12,327 INFO L85 PathProgramCache]: Analyzing trace with hash -134049642, now seen corresponding path program 3 times [2023-02-15 10:07:12,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:07:12,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029722064] [2023-02-15 10:07:12,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:07:12,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:07:12,345 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 10:07:12,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1280914133] [2023-02-15 10:07:12,345 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 10:07:12,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:07:12,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:07:12,346 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 10:07:12,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-15 10:07:12,612 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-02-15 10:07:12,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 10:07:12,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-15 10:07:12,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:07:12,682 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-15 10:07:12,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 10:07:12,733 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-15 10:07:12,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:07:12,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029722064] [2023-02-15 10:07:12,733 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 10:07:12,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280914133] [2023-02-15 10:07:12,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280914133] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 10:07:12,734 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 10:07:12,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2023-02-15 10:07:12,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826028113] [2023-02-15 10:07:12,734 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 10:07:12,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-15 10:07:12,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:07:12,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-15 10:07:12,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-02-15 10:07:12,735 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:07:13,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:07:13,024 INFO L93 Difference]: Finished difference Result 108 states and 116 transitions. [2023-02-15 10:07:13,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-02-15 10:07:13,024 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-02-15 10:07:13,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:07:13,025 INFO L225 Difference]: With dead ends: 108 [2023-02-15 10:07:13,025 INFO L226 Difference]: Without dead ends: 81 [2023-02-15 10:07:13,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=185, Invalid=465, Unknown=0, NotChecked=0, Total=650 [2023-02-15 10:07:13,025 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 139 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 10:07:13,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 91 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 10:07:13,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-02-15 10:07:13,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 54. [2023-02-15 10:07:13,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.0943396226415094) internal successors, (58), 53 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:07:13,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2023-02-15 10:07:13,032 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 28 [2023-02-15 10:07:13,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:07:13,033 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2023-02-15 10:07:13,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:07:13,033 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2023-02-15 10:07:13,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-02-15 10:07:13,034 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:07:13,034 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:07:13,040 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-02-15 10:07:13,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:07:13,234 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:07:13,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:07:13,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1505554158, now seen corresponding path program 4 times [2023-02-15 10:07:13,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:07:13,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060133636] [2023-02-15 10:07:13,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:07:13,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:07:13,255 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 10:07:13,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1356488110] [2023-02-15 10:07:13,255 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 10:07:13,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:07:13,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:07:13,256 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 10:07:13,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-15 10:07:13,853 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 10:07:13,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 10:07:13,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 56 conjunts are in the unsatisfiable core [2023-02-15 10:07:13,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:07:13,951 INFO L321 Elim1Store]: treesize reduction 117, result has 35.4 percent of original size [2023-02-15 10:07:13,951 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 92 treesize of output 229 [2023-02-15 10:07:13,961 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 10:07:13,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 10:07:13,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 10:07:14,470 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:07:14,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 11 [2023-02-15 10:07:14,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 10:07:14,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:07:14,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:07:14,503 INFO L321 Elim1Store]: treesize reduction 13, result has 38.1 percent of original size [2023-02-15 10:07:14,504 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 189 treesize of output 152 [2023-02-15 10:07:14,509 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 138 treesize of output 136 [2023-02-15 10:07:14,514 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 136 treesize of output 134 [2023-02-15 10:07:14,520 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 134 treesize of output 132 [2023-02-15 10:07:14,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 10:07:14,989 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-15 10:07:14,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 28 [2023-02-15 10:07:15,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-15 10:07:15,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-15 10:07:15,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-15 10:07:15,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-15 10:07:15,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-15 10:07:15,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-15 10:07:15,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 50 [2023-02-15 10:07:15,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:07:15,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:07:15,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 100 [2023-02-15 10:07:15,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:07:15,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:07:15,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 24 [2023-02-15 10:07:15,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 50 [2023-02-15 10:07:15,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:07:15,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:07:15,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 100 [2023-02-15 10:07:15,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:07:15,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-02-15 10:07:15,368 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 10:07:15,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 10:07:15,697 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_629 (Array Int Int))) (= c_~N~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_ArrVal_629) |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset|))) is different from false [2023-02-15 10:07:15,780 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 10 not checked. [2023-02-15 10:07:15,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:07:15,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060133636] [2023-02-15 10:07:15,781 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 10:07:15,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356488110] [2023-02-15 10:07:15,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356488110] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 10:07:15,781 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 10:07:15,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2023-02-15 10:07:15,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699592210] [2023-02-15 10:07:15,782 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 10:07:15,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-02-15 10:07:15,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:07:15,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-02-15 10:07:15,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=308, Unknown=7, NotChecked=38, Total=462 [2023-02-15 10:07:15,783 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand has 22 states, 22 states have (on average 2.409090909090909) internal successors, (53), 22 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) [2023-02-15 10:07:17,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:07:17,284 INFO L93 Difference]: Finished difference Result 135 states and 149 transitions. [2023-02-15 10:07:17,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-02-15 10:07:17,284 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.409090909090909) internal successors, (53), 22 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) Word has length 32 [2023-02-15 10:07:17,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:07:17,285 INFO L225 Difference]: With dead ends: 135 [2023-02-15 10:07:17,285 INFO L226 Difference]: Without dead ends: 133 [2023-02-15 10:07:17,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 43 SyntacticMatches, 6 SemanticMatches, 34 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=333, Invalid=854, Unknown=7, NotChecked=66, Total=1260 [2023-02-15 10:07:17,286 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 418 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-02-15 10:07:17,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 136 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 303 Invalid, 0 Unknown, 70 Unchecked, 1.0s Time] [2023-02-15 10:07:17,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-02-15 10:07:17,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 63. [2023-02-15 10:07:17,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.1451612903225807) internal successors, (71), 62 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:07:17,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 71 transitions. [2023-02-15 10:07:17,294 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 71 transitions. Word has length 32 [2023-02-15 10:07:17,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:07:17,295 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 71 transitions. [2023-02-15 10:07:17,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.409090909090909) internal successors, (53), 22 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) [2023-02-15 10:07:17,295 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 71 transitions. [2023-02-15 10:07:17,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-02-15 10:07:17,295 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:07:17,296 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:07:17,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-15 10:07:17,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-02-15 10:07:17,502 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:07:17,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:07:17,503 INFO L85 PathProgramCache]: Analyzing trace with hash 505093188, now seen corresponding path program 2 times [2023-02-15 10:07:17,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:07:17,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851197923] [2023-02-15 10:07:17,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:07:17,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:07:17,536 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 10:07:17,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1972063595] [2023-02-15 10:07:17,537 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 10:07:17,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:07:17,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:07:17,539 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 10:07:17,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-15 10:07:17,800 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 10:07:17,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 10:07:17,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 81 conjunts are in the unsatisfiable core [2023-02-15 10:07:17,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:07:17,862 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-15 10:07:17,862 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2023-02-15 10:07:17,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:07:17,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:07:17,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:07:17,876 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 34 [2023-02-15 10:07:17,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 34 [2023-02-15 10:07:17,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2023-02-15 10:07:17,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 10:07:17,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 10:07:17,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 10:07:17,987 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2023-02-15 10:07:17,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 71 treesize of output 70 [2023-02-15 10:07:17,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:07:18,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:07:18,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 100 [2023-02-15 10:07:18,131 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2023-02-15 10:07:18,132 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 71 treesize of output 70 [2023-02-15 10:07:18,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:07:18,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:07:18,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 100 [2023-02-15 10:07:18,155 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-15 10:07:18,337 INFO L321 Elim1Store]: treesize reduction 31, result has 13.9 percent of original size [2023-02-15 10:07:18,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 146 treesize of output 137 [2023-02-15 10:07:18,344 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:07:18,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:07:18,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:07:18,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:07:18,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:07:18,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 194 [2023-02-15 10:07:18,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:07:18,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:07:18,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 160 treesize of output 98 [2023-02-15 10:07:18,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:07:18,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:07:18,512 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2023-02-15 10:07:18,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 54 [2023-02-15 10:07:18,658 INFO L321 Elim1Store]: treesize reduction 31, result has 13.9 percent of original size [2023-02-15 10:07:18,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 182 treesize of output 169 [2023-02-15 10:07:18,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:07:18,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:07:18,667 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:07:18,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:07:18,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:07:18,671 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 123 treesize of output 197 [2023-02-15 10:07:18,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:07:18,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:07:18,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 200 treesize of output 113 [2023-02-15 10:07:18,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:07:18,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:07:18,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:07:18,897 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:07:18,901 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2023-02-15 10:07:18,901 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 79 treesize of output 68 [2023-02-15 10:07:19,365 INFO L321 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2023-02-15 10:07:19,366 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 125 treesize of output 69 [2023-02-15 10:07:19,387 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:07:19,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 10:07:47,547 WARN L233 SmtUtils]: Spent 5.24s on a formula simplification that was a NOOP. DAG size: 129 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-15 10:07:47,559 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:07:47,560 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:07:47,561 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:07:47,563 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:07:47,564 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:07:47,564 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:07:47,567 INFO L321 Elim1Store]: treesize reduction 21, result has 4.5 percent of original size [2023-02-15 10:07:47,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 1044 treesize of output 1 [2023-02-15 10:07:47,569 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:07:47,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:07:47,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851197923] [2023-02-15 10:07:47,569 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 10:07:47,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972063595] [2023-02-15 10:07:47,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972063595] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 10:07:47,569 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 10:07:47,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20] total 37 [2023-02-15 10:07:47,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943304325] [2023-02-15 10:07:47,569 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 10:07:47,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-02-15 10:07:47,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:07:47,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-02-15 10:07:47,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=1128, Unknown=5, NotChecked=0, Total=1332 [2023-02-15 10:07:47,571 INFO L87 Difference]: Start difference. First operand 63 states and 71 transitions. Second operand has 37 states, 37 states have (on average 1.7567567567567568) internal successors, (65), 37 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:07:49,653 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse70 (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (.cse142 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse49 (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (let ((.cse4 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~c~0#1.base|)) (.cse28 (* 8 .cse49)) (.cse140 (* .cse142 8)) (.cse141 (mod .cse70 4294967296))) (let ((.cse42 (<= .cse141 2147483647)) (.cse19 (<= .cse142 2147483647)) (.cse3 (+ .cse140 |c_ULTIMATE.start_main_~c~0#1.offset|)) (.cse51 (select .cse1 (+ |c_ULTIMATE.start_main_~c~0#1.offset| .cse28))) (.cse48 (select .cse4 (+ .cse28 |c_ULTIMATE.start_main_~b~0#1.offset|))) (.cse139 (* .cse141 8))) (let ((.cse2 (+ .cse139 |c_ULTIMATE.start_main_~c~0#1.offset|)) (.cse15 (+ .cse140 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse5 (+ .cse140 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse50 (store .cse1 .cse3 (+ .cse51 .cse48))) (.cse6 (+ 16 |c_ULTIMATE.start_main_~c~0#1.offset|)) (.cse17 (+ .cse139 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse26 (+ .cse139 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse52 (< (+ 2 |c_ULTIMATE.start_main_~i~0#1|) c_~N~0)) (.cse20 (not .cse19)) (.cse78 (+ .cse140 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse61 (+ .cse139 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse18 (not .cse42)) (.cse86 (+ .cse140 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse69 (+ .cse139 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse0 (not (< 2 c_~N~0))) (.cse10 (+ 8 |c_ULTIMATE.start_main_~c~0#1.offset|)) (.cse13 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse27 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse60 (+ 16 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse7 (+ c_~N~0 8))) (and (or .cse0 (= (select (store .cse1 .cse2 (+ (select .cse1 .cse3) (select .cse4 .cse5))) .cse6) .cse7)) (or (let ((.cse29 (<= .cse49 2147483647))) (and (or (let ((.cse16 (+ (select .cse27 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368) .cse28)) (select .cse4 (+ (- 34359738368) .cse28 |c_ULTIMATE.start_main_~b~0#1.offset|))))) (and (or (and (forall ((v_ArrVal_727 Int)) (= (let ((.cse14 (store (store .cse4 .cse15 .cse16) .cse17 v_ArrVal_727))) (let ((.cse8 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse14))) (let ((.cse9 (select .cse8 |c_ULTIMATE.start_main_~c~0#1.base|))) (let ((.cse11 (select .cse9 |c_ULTIMATE.start_main_~c~0#1.offset|)) (.cse12 (select .cse14 |c_ULTIMATE.start_main_~b~0#1.offset|))) (+ (select (select (store .cse8 |c_ULTIMATE.start_main_~c~0#1.base| (store .cse9 .cse10 (+ .cse11 .cse12))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse13) .cse11 .cse12))))) .cse7)) .cse18) .cse19) (or .cse20 (forall ((v_ArrVal_727 Int)) (= (let ((.cse25 (store (store .cse4 .cse5 .cse16) .cse26 v_ArrVal_727))) (let ((.cse22 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse25))) (let ((.cse23 (select .cse22 |c_ULTIMATE.start_main_~c~0#1.base|))) (let ((.cse21 (select .cse23 |c_ULTIMATE.start_main_~c~0#1.offset|)) (.cse24 (select .cse25 |c_ULTIMATE.start_main_~b~0#1.offset|))) (+ .cse21 (select (select (store .cse22 |c_ULTIMATE.start_main_~c~0#1.base| (store .cse23 .cse10 (+ .cse21 .cse24))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse13) .cse24))))) .cse7))))) .cse29) (or (let ((.cse35 (+ .cse48 (select .cse27 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse28))))) (and (or (forall ((v_ArrVal_727 Int)) (= (let ((.cse34 (store (store .cse4 .cse15 .cse35) .cse17 v_ArrVal_727))) (let ((.cse31 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse34))) (let ((.cse32 (select .cse31 |c_ULTIMATE.start_main_~c~0#1.base|))) (let ((.cse30 (select .cse32 |c_ULTIMATE.start_main_~c~0#1.offset|)) (.cse33 (select .cse34 |c_ULTIMATE.start_main_~b~0#1.offset|))) (+ .cse30 (select (select (store .cse31 |c_ULTIMATE.start_main_~c~0#1.base| (store .cse32 .cse10 (+ .cse30 .cse33))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse13) .cse33))))) .cse7)) .cse19) (or .cse20 (let ((.cse41 (store .cse4 .cse5 .cse35))) (and (or .cse18 (forall ((v_ArrVal_727 Int)) (= (let ((.cse40 (store .cse41 .cse26 v_ArrVal_727))) (let ((.cse37 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse40))) (let ((.cse38 (select .cse37 |c_ULTIMATE.start_main_~c~0#1.base|))) (let ((.cse36 (select .cse38 |c_ULTIMATE.start_main_~c~0#1.offset|)) (.cse39 (select .cse40 |c_ULTIMATE.start_main_~b~0#1.offset|))) (+ .cse36 (select (select (store .cse37 |c_ULTIMATE.start_main_~c~0#1.base| (store .cse38 .cse10 (+ .cse36 .cse39))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse13) .cse39))))) .cse7))) (or .cse42 (forall ((v_ArrVal_727 Int)) (= (let ((.cse47 (store .cse41 .cse17 v_ArrVal_727))) (let ((.cse44 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse47))) (let ((.cse45 (select .cse44 |c_ULTIMATE.start_main_~c~0#1.base|))) (let ((.cse43 (select .cse45 |c_ULTIMATE.start_main_~c~0#1.offset|)) (.cse46 (select .cse47 |c_ULTIMATE.start_main_~b~0#1.offset|))) (+ .cse43 (select (select (store .cse44 |c_ULTIMATE.start_main_~c~0#1.base| (store .cse45 .cse10 (+ .cse43 .cse46))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse13) .cse46))))) .cse7)))))))) (not .cse29)))) .cse0) (or (= (select .cse1 .cse6) .cse7) .cse0) (<= (mod c_~N~0 4294967296) 536870911) (or .cse0 (= (select (store .cse50 .cse2 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~c~0#1.base| .cse50) |c_ULTIMATE.start_main_~b~0#1.base|) .cse5) .cse51 .cse48)) .cse6) .cse7)) (or .cse52 (and (or .cse42 (forall ((v_ArrVal_727 Int) (v_ArrVal_722 Int)) (= (let ((.cse59 (store .cse27 .cse61 v_ArrVal_722))) (let ((.cse57 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse59))) (let ((.cse58 (select .cse57 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse54 (select .cse58 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse55 (store .cse57 |c_ULTIMATE.start_main_~b~0#1.base| (store (store .cse58 .cse13 (+ (select .cse59 |c_ULTIMATE.start_main_~a~0#1.offset|) .cse54)) .cse60 v_ArrVal_727)))) (let ((.cse56 (select .cse55 |c_ULTIMATE.start_main_~c~0#1.base|))) (let ((.cse53 (select .cse56 |c_ULTIMATE.start_main_~c~0#1.offset|))) (+ .cse53 .cse54 (select (select (store .cse55 |c_ULTIMATE.start_main_~c~0#1.base| (store .cse56 .cse10 (+ .cse53 .cse54))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse13))))))))) .cse7))) (or (forall ((v_ArrVal_727 Int) (v_ArrVal_722 Int)) (= (let ((.cse68 (store .cse27 .cse69 v_ArrVal_722))) (let ((.cse66 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse68))) (let ((.cse67 (select .cse66 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse65 (select .cse67 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse63 (store .cse66 |c_ULTIMATE.start_main_~b~0#1.base| (store (store .cse67 .cse13 (+ (select .cse68 |c_ULTIMATE.start_main_~a~0#1.offset|) .cse65)) .cse60 v_ArrVal_727)))) (let ((.cse64 (select .cse63 |c_ULTIMATE.start_main_~c~0#1.base|))) (let ((.cse62 (select .cse64 |c_ULTIMATE.start_main_~c~0#1.offset|))) (+ .cse62 (select (select (store .cse63 |c_ULTIMATE.start_main_~c~0#1.base| (store .cse64 .cse10 (+ .cse62 .cse65))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse13) .cse65)))))))) .cse7)) .cse18)) .cse0) (or (< .cse70 c_~N~0) (and (or (forall ((v_ArrVal_727 Int) (v_ArrVal_722 Int)) (= (let ((.cse77 (store .cse27 .cse78 v_ArrVal_722))) (let ((.cse75 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse77))) (let ((.cse76 (select .cse75 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse74 (select .cse76 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse71 (store .cse75 |c_ULTIMATE.start_main_~b~0#1.base| (store (store .cse76 .cse13 (+ (select .cse77 |c_ULTIMATE.start_main_~a~0#1.offset|) .cse74)) .cse60 v_ArrVal_727)))) (let ((.cse72 (select .cse71 |c_ULTIMATE.start_main_~c~0#1.base|))) (let ((.cse73 (select .cse72 |c_ULTIMATE.start_main_~c~0#1.offset|))) (+ (select (select (store .cse71 |c_ULTIMATE.start_main_~c~0#1.base| (store .cse72 .cse10 (+ .cse73 .cse74))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse13) .cse73 .cse74)))))))) .cse7)) .cse20) (or (forall ((v_ArrVal_727 Int) (v_ArrVal_722 Int)) (= (let ((.cse85 (store .cse27 .cse86 v_ArrVal_722))) (let ((.cse83 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse85))) (let ((.cse84 (select .cse83 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse79 (select .cse84 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse81 (store .cse83 |c_ULTIMATE.start_main_~b~0#1.base| (store (store .cse84 .cse13 (+ .cse79 (select .cse85 |c_ULTIMATE.start_main_~a~0#1.offset|))) .cse60 v_ArrVal_727)))) (let ((.cse82 (select .cse81 |c_ULTIMATE.start_main_~c~0#1.base|))) (let ((.cse80 (select .cse82 |c_ULTIMATE.start_main_~c~0#1.offset|))) (+ .cse79 .cse80 (select (select (store .cse81 |c_ULTIMATE.start_main_~c~0#1.base| (store .cse82 .cse10 (+ .cse79 .cse80))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse13))))))))) .cse7)) .cse19)) .cse0) (or .cse0 (and (or .cse19 (forall ((v_ArrVal_727 Int)) (= (let ((.cse91 (store .cse4 .cse15 v_ArrVal_727))) (let ((.cse89 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse91))) (let ((.cse90 (select .cse89 |c_ULTIMATE.start_main_~c~0#1.base|))) (let ((.cse87 (select .cse91 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse88 (select .cse90 |c_ULTIMATE.start_main_~c~0#1.offset|))) (+ .cse87 .cse88 (select (select (store .cse89 |c_ULTIMATE.start_main_~c~0#1.base| (store .cse90 .cse10 (+ .cse87 .cse88))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse13)))))) .cse7))) (or (forall ((v_ArrVal_727 Int)) (= (let ((.cse96 (store .cse4 .cse5 v_ArrVal_727))) (let ((.cse93 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse96))) (let ((.cse94 (select .cse93 |c_ULTIMATE.start_main_~c~0#1.base|))) (let ((.cse92 (select .cse94 |c_ULTIMATE.start_main_~c~0#1.offset|)) (.cse95 (select .cse96 |c_ULTIMATE.start_main_~b~0#1.offset|))) (+ .cse92 (select (select (store .cse93 |c_ULTIMATE.start_main_~c~0#1.base| (store .cse94 .cse10 (+ .cse92 .cse95))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse13) .cse95))))) .cse7)) .cse20))) (or (= (select .cse50 .cse6) .cse7) .cse0) (or (and (or .cse42 (forall ((v_ArrVal_727 Int)) (= .cse7 (let ((.cse101 (store .cse4 .cse17 v_ArrVal_727))) (let ((.cse99 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse101))) (let ((.cse100 (select .cse99 |c_ULTIMATE.start_main_~c~0#1.base|))) (let ((.cse97 (select .cse100 |c_ULTIMATE.start_main_~c~0#1.offset|)) (.cse98 (select .cse101 |c_ULTIMATE.start_main_~b~0#1.offset|))) (+ .cse97 .cse98 (select (select (store .cse99 |c_ULTIMATE.start_main_~c~0#1.base| (store .cse100 .cse10 (+ .cse97 .cse98))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse13))))))))) (or .cse18 (forall ((v_ArrVal_727 Int)) (= (let ((.cse106 (store .cse4 .cse26 v_ArrVal_727))) (let ((.cse104 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse106))) (let ((.cse105 (select .cse104 |c_ULTIMATE.start_main_~c~0#1.base|))) (let ((.cse102 (select .cse105 |c_ULTIMATE.start_main_~c~0#1.offset|)) (.cse103 (select .cse106 |c_ULTIMATE.start_main_~b~0#1.offset|))) (+ .cse102 .cse103 (select (select (store .cse104 |c_ULTIMATE.start_main_~c~0#1.base| (store .cse105 .cse10 (+ .cse102 .cse103))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse13)))))) .cse7)))) .cse0) (or .cse52 .cse0 (and (or .cse20 (and (or (forall ((v_ArrVal_720 Int) (v_ArrVal_727 Int) (v_ArrVal_722 Int)) (= (let ((.cse113 (store (store .cse27 .cse78 v_ArrVal_720) .cse69 v_ArrVal_722))) (let ((.cse111 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse113))) (let ((.cse112 (select .cse111 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse109 (select .cse112 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse107 (store .cse111 |c_ULTIMATE.start_main_~b~0#1.base| (store (store .cse112 .cse13 (+ (select .cse113 |c_ULTIMATE.start_main_~a~0#1.offset|) .cse109)) .cse60 v_ArrVal_727)))) (let ((.cse108 (select .cse107 |c_ULTIMATE.start_main_~c~0#1.base|))) (let ((.cse110 (select .cse108 |c_ULTIMATE.start_main_~c~0#1.offset|))) (+ (select (select (store .cse107 |c_ULTIMATE.start_main_~c~0#1.base| (store .cse108 .cse10 (+ .cse109 .cse110))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse13) .cse109 .cse110)))))))) .cse7)) .cse18) (or .cse42 (forall ((v_ArrVal_720 Int) (v_ArrVal_727 Int) (v_ArrVal_722 Int)) (= (let ((.cse120 (store (store .cse27 .cse78 v_ArrVal_720) .cse61 v_ArrVal_722))) (let ((.cse118 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse120))) (let ((.cse119 (select .cse118 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse117 (select .cse119 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse114 (store .cse118 |c_ULTIMATE.start_main_~b~0#1.base| (store (store .cse119 .cse13 (+ .cse117 (select .cse120 |c_ULTIMATE.start_main_~a~0#1.offset|))) .cse60 v_ArrVal_727)))) (let ((.cse115 (select .cse114 |c_ULTIMATE.start_main_~c~0#1.base|))) (let ((.cse116 (select .cse115 |c_ULTIMATE.start_main_~c~0#1.offset|))) (+ (select (select (store .cse114 |c_ULTIMATE.start_main_~c~0#1.base| (store .cse115 .cse10 (+ .cse116 .cse117))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse13) .cse116 .cse117)))))))) .cse7))))) (or .cse19 (and (or .cse42 (forall ((v_ArrVal_720 Int) (v_ArrVal_727 Int) (v_ArrVal_722 Int)) (= (let ((.cse127 (store (store .cse27 .cse86 v_ArrVal_720) .cse61 v_ArrVal_722))) (let ((.cse125 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse127))) (let ((.cse126 (select .cse125 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse121 (select .cse126 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse122 (store .cse125 |c_ULTIMATE.start_main_~b~0#1.base| (store (store .cse126 .cse13 (+ .cse121 (select .cse127 |c_ULTIMATE.start_main_~a~0#1.offset|))) .cse60 v_ArrVal_727)))) (let ((.cse123 (select .cse122 |c_ULTIMATE.start_main_~c~0#1.base|))) (let ((.cse124 (select .cse123 |c_ULTIMATE.start_main_~c~0#1.offset|))) (+ .cse121 (select (select (store .cse122 |c_ULTIMATE.start_main_~c~0#1.base| (store .cse123 .cse10 (+ .cse121 .cse124))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse13) .cse124)))))))) .cse7))) (or .cse18 (forall ((v_ArrVal_720 Int) (v_ArrVal_727 Int) (v_ArrVal_722 Int)) (= (let ((.cse134 (store (store .cse27 .cse86 v_ArrVal_720) .cse69 v_ArrVal_722))) (let ((.cse132 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse134))) (let ((.cse133 (select .cse132 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse131 (select .cse133 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse128 (store .cse132 |c_ULTIMATE.start_main_~b~0#1.base| (store (store .cse133 .cse13 (+ (select .cse134 |c_ULTIMATE.start_main_~a~0#1.offset|) .cse131)) .cse60 v_ArrVal_727)))) (let ((.cse129 (select .cse128 |c_ULTIMATE.start_main_~c~0#1.base|))) (let ((.cse130 (select .cse129 |c_ULTIMATE.start_main_~c~0#1.offset|))) (+ (select (select (store .cse128 |c_ULTIMATE.start_main_~c~0#1.base| (store .cse129 .cse10 (+ .cse130 .cse131))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse13) .cse130 .cse131)))))))) .cse7))))))) (or .cse0 (forall ((v_ArrVal_727 Int)) (= (let ((.cse138 (select .cse4 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse135 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store (store .cse4 .cse13 (+ .cse138 (select .cse27 |c_ULTIMATE.start_main_~a~0#1.offset|))) .cse60 v_ArrVal_727)))) (let ((.cse136 (select .cse135 |c_ULTIMATE.start_main_~c~0#1.base|))) (let ((.cse137 (select .cse136 |c_ULTIMATE.start_main_~c~0#1.offset|))) (+ (select (select (store .cse135 |c_ULTIMATE.start_main_~c~0#1.base| (store .cse136 .cse10 (+ .cse137 .cse138))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse13) .cse137 .cse138))))) .cse7)))))))) is different from true [2023-02-15 10:08:40,965 WARN L233 SmtUtils]: Spent 45.92s on a formula simplification. DAG size of input: 226 DAG size of output: 157 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-15 10:08:47,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-15 10:09:00,306 WARN L233 SmtUtils]: Spent 8.04s on a formula simplification. DAG size of input: 162 DAG size of output: 156 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-15 10:09:02,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-15 10:09:56,227 WARN L233 SmtUtils]: Spent 38.25s on a formula simplification. DAG size of input: 212 DAG size of output: 206 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-15 10:10:00,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-15 10:10:02,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-15 10:10:04,993 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-15 10:10:18,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-15 10:10:21,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-15 10:10:37,032 WARN L233 SmtUtils]: Spent 7.10s on a formula simplification. DAG size of input: 321 DAG size of output: 152 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-15 10:10:39,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]