./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/pcompf.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e8d55036 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-fpi/pcompf.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 f995d1a14a0e61f10b2f5817b1ff2bf8d1511dbe7297ad48450a11ed6f3a9160 --- Real Ultimate output --- This is Ultimate 0.2.2-?-e8d5503-m [2023-02-15 19:06:10,233 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 19:06:10,235 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 19:06:10,268 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 19:06:10,269 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 19:06:10,271 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 19:06:10,272 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 19:06:10,274 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 19:06:10,276 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 19:06:10,280 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 19:06:10,281 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 19:06:10,282 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 19:06:10,282 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 19:06:10,284 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 19:06:10,285 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 19:06:10,286 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 19:06:10,287 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 19:06:10,288 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 19:06:10,289 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 19:06:10,293 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 19:06:10,293 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 19:06:10,294 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 19:06:10,295 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 19:06:10,295 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 19:06:10,304 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 19:06:10,304 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 19:06:10,304 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 19:06:10,305 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 19:06:10,306 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 19:06:10,306 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 19:06:10,307 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 19:06:10,307 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 19:06:10,309 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 19:06:10,309 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 19:06:10,310 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 19:06:10,310 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 19:06:10,311 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 19:06:10,311 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 19:06:10,311 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 19:06:10,311 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 19:06:10,312 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 19:06:10,313 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 19:06:10,336 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 19:06:10,337 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 19:06:10,337 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 19:06:10,337 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 19:06:10,338 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 19:06:10,338 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 19:06:10,338 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 19:06:10,338 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 19:06:10,339 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 19:06:10,339 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 19:06:10,339 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 19:06:10,339 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 19:06:10,340 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 19:06:10,340 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 19:06:10,340 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 19:06:10,340 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 19:06:10,340 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 19:06:10,340 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 19:06:10,340 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 19:06:10,341 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 19:06:10,341 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 19:06:10,341 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 19:06:10,341 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 19:06:10,341 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 19:06:10,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 19:06:10,341 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 19:06:10,342 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 19:06:10,342 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 19:06:10,342 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 19:06:10,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 19:06:10,342 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 19:06:10,342 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 19:06:10,342 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 19:06:10,343 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 19:06:10,343 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 19:06:10,343 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f995d1a14a0e61f10b2f5817b1ff2bf8d1511dbe7297ad48450a11ed6f3a9160 [2023-02-15 19:06:10,532 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 19:06:10,549 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 19:06:10,551 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 19:06:10,551 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 19:06:10,552 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 19:06:10,552 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/pcompf.c [2023-02-15 19:06:11,383 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 19:06:11,577 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 19:06:11,577 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/pcompf.c [2023-02-15 19:06:11,581 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d1ea7f44/5bf7833d73a74e47b1cc424c40e078ae/FLAGf7a61dd72 [2023-02-15 19:06:11,593 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d1ea7f44/5bf7833d73a74e47b1cc424c40e078ae [2023-02-15 19:06:11,595 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 19:06:11,596 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 19:06:11,597 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 19:06:11,597 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 19:06:11,599 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 19:06:11,600 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 07:06:11" (1/1) ... [2023-02-15 19:06:11,600 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43d1fe56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:06:11, skipping insertion in model container [2023-02-15 19:06:11,601 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 07:06:11" (1/1) ... [2023-02-15 19:06:11,606 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 19:06:11,618 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 19:06:11,703 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/pcompf.c[589,602] [2023-02-15 19:06:11,716 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 19:06:11,722 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 19:06:11,730 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/pcompf.c[589,602] [2023-02-15 19:06:11,735 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 19:06:11,743 INFO L208 MainTranslator]: Completed translation [2023-02-15 19:06:11,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:06:11 WrapperNode [2023-02-15 19:06:11,744 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 19:06:11,745 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 19:06:11,745 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 19:06:11,745 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 19:06:11,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:06:11" (1/1) ... [2023-02-15 19:06:11,754 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:06:11" (1/1) ... [2023-02-15 19:06:11,766 INFO L138 Inliner]: procedures = 16, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 89 [2023-02-15 19:06:11,766 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 19:06:11,767 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 19:06:11,767 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 19:06:11,767 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 19:06:11,773 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:06:11" (1/1) ... [2023-02-15 19:06:11,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:06:11" (1/1) ... [2023-02-15 19:06:11,775 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:06:11" (1/1) ... [2023-02-15 19:06:11,775 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:06:11" (1/1) ... [2023-02-15 19:06:11,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:06:11" (1/1) ... [2023-02-15 19:06:11,789 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:06:11" (1/1) ... [2023-02-15 19:06:11,790 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:06:11" (1/1) ... [2023-02-15 19:06:11,791 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:06:11" (1/1) ... [2023-02-15 19:06:11,792 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 19:06:11,793 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 19:06:11,793 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 19:06:11,793 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 19:06:11,794 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:06:11" (1/1) ... [2023-02-15 19:06:11,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 19:06:11,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:06:11,816 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-15 19:06:11,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-15 19:06:11,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 19:06:11,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 19:06:11,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-15 19:06:11,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-15 19:06:11,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 19:06:11,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 19:06:11,845 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-15 19:06:11,899 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 19:06:11,901 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 19:06:12,068 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 19:06:12,071 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 19:06:12,072 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2023-02-15 19:06:12,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 07:06:12 BoogieIcfgContainer [2023-02-15 19:06:12,073 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 19:06:12,075 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 19:06:12,075 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 19:06:12,077 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 19:06:12,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 07:06:11" (1/3) ... [2023-02-15 19:06:12,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@290749a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 07:06:12, skipping insertion in model container [2023-02-15 19:06:12,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:06:11" (2/3) ... [2023-02-15 19:06:12,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@290749a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 07:06:12, skipping insertion in model container [2023-02-15 19:06:12,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 07:06:12" (3/3) ... [2023-02-15 19:06:12,079 INFO L112 eAbstractionObserver]: Analyzing ICFG pcompf.c [2023-02-15 19:06:12,089 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 19:06:12,090 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 19:06:12,124 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 19:06:12,129 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;@6360b050, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 19:06:12,130 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 19:06:12,132 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:06:12,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-15 19:06:12,136 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:06:12,137 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:06:12,137 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:06:12,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:06:12,141 INFO L85 PathProgramCache]: Analyzing trace with hash -592971038, now seen corresponding path program 1 times [2023-02-15 19:06:12,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:06:12,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137241264] [2023-02-15 19:06:12,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:06:12,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:06:12,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:06:12,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:06:12,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137241264] [2023-02-15 19:06:12,252 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-15 19:06:12,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809228920] [2023-02-15 19:06:12,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:06:12,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:06:12,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:06:12,257 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 19:06:12,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 19:06:12,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:06:12,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-15 19:06:12,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 19:06:12,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:06:12,377 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 19:06:12,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809228920] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:06:12,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:06:12,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 19:06:12,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043279521] [2023-02-15 19:06:12,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:06:12,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-15 19:06:12,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:06:12,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-15 19:06:12,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 19:06:12,417 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:06:12,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:06:12,436 INFO L93 Difference]: Finished difference Result 44 states and 62 transitions. [2023-02-15 19:06:12,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-15 19:06:12,443 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-02-15 19:06:12,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:06:12,448 INFO L225 Difference]: With dead ends: 44 [2023-02-15 19:06:12,449 INFO L226 Difference]: Without dead ends: 20 [2023-02-15 19:06:12,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 19:06:12,453 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:06:12,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:06:12,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-02-15 19:06:12,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-02-15 19:06:12,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:06:12,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2023-02-15 19:06:12,473 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 14 [2023-02-15 19:06:12,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:06:12,474 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2023-02-15 19:06:12,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:06:12,474 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2023-02-15 19:06:12,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-15 19:06:12,474 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:06:12,475 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:06:12,482 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-15 19:06:12,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-02-15 19:06:12,681 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:06:12,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:06:12,682 INFO L85 PathProgramCache]: Analyzing trace with hash 108093540, now seen corresponding path program 1 times [2023-02-15 19:06:12,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:06:12,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308657330] [2023-02-15 19:06:12,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:06:12,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:06:12,727 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 19:06:12,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [640986334] [2023-02-15 19:06:12,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:06:12,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:06:12,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:06:12,729 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 19:06:12,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 19:06:12,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:06:12,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 16 conjunts are in the unsatisfiable core [2023-02-15 19:06:12,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 19:06:12,964 INFO L321 Elim1Store]: treesize reduction 117, result has 35.4 percent of original size [2023-02-15 19:06:12,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 92 treesize of output 229 [2023-02-15 19:06:13,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 19:06:13,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 19:06:13,056 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 19:06:13,381 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 19:06:13,433 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2023-02-15 19:06:13,434 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 16 [2023-02-15 19:06:13,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 19:06:13,491 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 19:06:13,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:06:13,543 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 19:06:13,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:06:13,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308657330] [2023-02-15 19:06:13,545 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 19:06:13,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640986334] [2023-02-15 19:06:13,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640986334] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:06:13,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:06:13,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 19:06:13,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137312371] [2023-02-15 19:06:13,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:06:13,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 19:06:13,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:06:13,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 19:06:13,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-15 19:06:13,551 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:06:13,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:06:13,606 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2023-02-15 19:06:13,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 19:06:13,607 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-02-15 19:06:13,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:06:13,608 INFO L225 Difference]: With dead ends: 39 [2023-02-15 19:06:13,608 INFO L226 Difference]: Without dead ends: 37 [2023-02-15 19:06:13,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-02-15 19:06:13,609 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 14 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:06:13,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 65 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:06:13,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-02-15 19:06:13,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 28. [2023-02-15 19:06:13,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:06:13,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2023-02-15 19:06:13,613 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 14 [2023-02-15 19:06:13,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:06:13,613 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2023-02-15 19:06:13,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:06:13,614 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2023-02-15 19:06:13,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-15 19:06:13,614 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:06:13,614 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:06:13,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-15 19:06:13,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-02-15 19:06:13,820 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:06:13,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:06:13,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1850906398, now seen corresponding path program 1 times [2023-02-15 19:06:13,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:06:13,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099207949] [2023-02-15 19:06:13,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:06:13,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:06:13,853 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 19:06:13,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [295724092] [2023-02-15 19:06:13,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:06:13,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:06:13,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:06:13,866 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 19:06:13,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-15 19:06:13,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:06:13,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 19:06:13,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 19:06:13,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:06:13,978 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 19:06:13,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:06:13,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099207949] [2023-02-15 19:06:13,979 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 19:06:13,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295724092] [2023-02-15 19:06:13,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295724092] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:06:13,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:06:13,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 19:06:13,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402257395] [2023-02-15 19:06:13,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:06:13,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 19:06:13,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:06:13,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 19:06:13,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-15 19:06:13,981 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:06:14,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:06:14,038 INFO L93 Difference]: Finished difference Result 62 states and 73 transitions. [2023-02-15 19:06:14,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 19:06:14,039 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-02-15 19:06:14,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:06:14,039 INFO L225 Difference]: With dead ends: 62 [2023-02-15 19:06:14,039 INFO L226 Difference]: Without dead ends: 50 [2023-02-15 19:06:14,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-02-15 19:06:14,040 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 29 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:06:14,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 32 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:06:14,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-02-15 19:06:14,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 31. [2023-02-15 19:06:14,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2) internal successors, (36), 30 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:06:14,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2023-02-15 19:06:14,050 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 16 [2023-02-15 19:06:14,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:06:14,050 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2023-02-15 19:06:14,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:06:14,050 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2023-02-15 19:06:14,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-15 19:06:14,051 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:06:14,051 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:06:14,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-15 19:06:14,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:06:14,259 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:06:14,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:06:14,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1060218526, now seen corresponding path program 1 times [2023-02-15 19:06:14,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:06:14,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873316394] [2023-02-15 19:06:14,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:06:14,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:06:14,274 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 19:06:14,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1482814670] [2023-02-15 19:06:14,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:06:14,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:06:14,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:06:14,276 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 19:06:14,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-15 19:06:14,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:06:14,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 19:06:14,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 19:06:14,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:06:14,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 19:06:14,380 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:06:14,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:06:14,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873316394] [2023-02-15 19:06:14,380 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 19:06:14,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482814670] [2023-02-15 19:06:14,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482814670] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 19:06:14,381 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 19:06:14,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2023-02-15 19:06:14,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949647637] [2023-02-15 19:06:14,382 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 19:06:14,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 19:06:14,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:06:14,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 19:06:14,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-15 19:06:14,387 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:06:14,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:06:14,463 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2023-02-15 19:06:14,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-15 19:06:14,463 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-02-15 19:06:14,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:06:14,464 INFO L225 Difference]: With dead ends: 53 [2023-02-15 19:06:14,464 INFO L226 Difference]: Without dead ends: 44 [2023-02-15 19:06:14,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-02-15 19:06:14,465 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 43 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:06:14,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 44 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:06:14,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-02-15 19:06:14,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 30. [2023-02-15 19:06:14,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:06:14,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2023-02-15 19:06:14,468 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 16 [2023-02-15 19:06:14,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:06:14,468 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2023-02-15 19:06:14,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:06:14,469 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2023-02-15 19:06:14,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-15 19:06:14,469 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:06:14,469 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:06:14,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-15 19:06:14,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:06:14,674 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:06:14,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:06:14,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1120615462, now seen corresponding path program 1 times [2023-02-15 19:06:14,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:06:14,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420655430] [2023-02-15 19:06:14,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:06:14,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:06:14,687 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 19:06:14,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1685997546] [2023-02-15 19:06:14,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:06:14,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:06:14,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:06:14,689 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 19:06:14,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-15 19:06:14,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:06:14,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-15 19:06:14,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 19:06:14,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:06:14,777 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 19:06:14,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:06:14,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420655430] [2023-02-15 19:06:14,777 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 19:06:14,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685997546] [2023-02-15 19:06:14,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685997546] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:06:14,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:06:14,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-15 19:06:14,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109371788] [2023-02-15 19:06:14,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:06:14,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 19:06:14,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:06:14,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 19:06:14,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-02-15 19:06:14,779 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:06:14,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:06:14,843 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2023-02-15 19:06:14,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-15 19:06:14,843 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-02-15 19:06:14,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:06:14,844 INFO L225 Difference]: With dead ends: 48 [2023-02-15 19:06:14,844 INFO L226 Difference]: Without dead ends: 32 [2023-02-15 19:06:14,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-02-15 19:06:14,845 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 18 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:06:14,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 34 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:06:14,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-02-15 19:06:14,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2023-02-15 19:06:14,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:06:14,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2023-02-15 19:06:14,847 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 18 [2023-02-15 19:06:14,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:06:14,848 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2023-02-15 19:06:14,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:06:14,848 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2023-02-15 19:06:14,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-15 19:06:14,848 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:06:14,848 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:06:14,855 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-02-15 19:06:15,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:06:15,053 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:06:15,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:06:15,054 INFO L85 PathProgramCache]: Analyzing trace with hash 615941150, now seen corresponding path program 1 times [2023-02-15 19:06:15,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:06:15,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343895217] [2023-02-15 19:06:15,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:06:15,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:06:15,084 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 19:06:15,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1264774047] [2023-02-15 19:06:15,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:06:15,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:06:15,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:06:15,089 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 19:06:15,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-15 19:06:15,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:06:15,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 38 conjunts are in the unsatisfiable core [2023-02-15 19:06:15,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 19:06:15,259 INFO L321 Elim1Store]: treesize reduction 117, result has 35.4 percent of original size [2023-02-15 19:06:15,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 92 treesize of output 229 [2023-02-15 19:06:15,268 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 19:06:15,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 19:06:15,285 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 19:06:15,339 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:06:15,341 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:06:15,342 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:06:15,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 74 [2023-02-15 19:06:15,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 19:06:15,369 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:06:15,374 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:06:15,384 INFO L321 Elim1Store]: treesize reduction 25, result has 24.2 percent of original size [2023-02-15 19:06:15,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 93 treesize of output 92 [2023-02-15 19:06:15,404 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 19:06:15,427 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:06:15,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 11 [2023-02-15 19:06:15,432 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 19:06:15,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2023-02-15 19:06:15,539 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse11 (= |c_ULTIMATE.start_main_~c~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse4 (= |c_ULTIMATE.start_main_~c~0#1.base| |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse0 (not .cse4)) (.cse1 (not .cse11))) (and (= 0 |c_ULTIMATE.start_main_~c~0#1.offset|) .cse0 .cse1 (let ((.cse5 (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset|) 0))) (or (and (let ((.cse3 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|))) (or (and (exists ((v_DerPreprocessor_15 (Array Int Int)) (v_DerPreprocessor_16 (Array Int Int)) (v_DerPreprocessor_14 (Array Int Int))) (let ((.cse2 (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_14) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_15) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_16) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_14) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_15) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_16))) (and (= v_DerPreprocessor_15 (select .cse2 |c_ULTIMATE.start_main_~b~0#1.base|)) (= (select v_DerPreprocessor_16 |c_ULTIMATE.start_main_~c~0#1.offset|) 0) (= (select .cse2 |c_ULTIMATE.start_main_~a~0#1.base|) .cse3)))) .cse4 .cse5) (and (exists ((v_DerPreprocessor_19 (Array Int Int)) (v_DerPreprocessor_17 (Array Int Int)) (v_DerPreprocessor_18 (Array Int Int)) (v_DerPreprocessor_11 (Array Int Int)) (v_DerPreprocessor_12 (Array Int Int)) (v_DerPreprocessor_13 (Array Int Int))) (let ((.cse8 (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_11) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_12) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_13) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_11) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_12) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_13))) (let ((.cse10 (store (store (store (store (store (store .cse8 |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_17) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_18) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_19) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_17) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_18) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_19))) (let ((.cse7 (select .cse10 |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse6 (select .cse8 |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse9 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|))) (and (= v_DerPreprocessor_11 .cse6) (= v_DerPreprocessor_17 .cse7) (= (select .cse8 |c_ULTIMATE.start_main_~b~0#1.base|) .cse9) (= (select v_DerPreprocessor_19 |c_ULTIMATE.start_main_~c~0#1.offset|) 0) (= .cse7 .cse6) (= (select v_DerPreprocessor_13 |c_ULTIMATE.start_main_~c~0#1.offset|) 0) (= .cse3 .cse6) (= (select .cse10 |c_ULTIMATE.start_main_~b~0#1.base|) .cse9)))))) .cse0 .cse5))) .cse1) (and .cse11 .cse5)))))) is different from true [2023-02-15 19:06:15,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:06:15,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:06:15,596 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2023-02-15 19:06:15,596 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 110 treesize of output 113 [2023-02-15 19:06:15,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 19:06:15,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 19:06:15,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-15 19:06:15,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:06:15,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-02-15 19:06:15,691 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-02-15 19:06:15,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 19:06:15,741 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_315 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_ArrVal_315) |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset|) 0)) is different from false [2023-02-15 19:06:15,785 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-02-15 19:06:15,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:06:15,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343895217] [2023-02-15 19:06:15,785 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 19:06:15,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264774047] [2023-02-15 19:06:15,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264774047] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 19:06:15,786 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 19:06:15,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2023-02-15 19:06:15,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423117454] [2023-02-15 19:06:15,786 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 19:06:15,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-15 19:06:15,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:06:15,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-15 19:06:15,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=116, Unknown=10, NotChecked=46, Total=210 [2023-02-15 19:06:15,787 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:06:28,214 WARN L233 SmtUtils]: Spent 6.14s on a formula simplification. DAG size of input: 40 DAG size of output: 31 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-15 19:06:30,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-15 19:06:32,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-15 19:06:34,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-15 19:06:44,626 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_316 Int)) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~c~0#1.base|) (+ |c_ULTIMATE.start_main_~c~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 8)) v_ArrVal_316) |c_ULTIMATE.start_main_~c~0#1.offset|) 0)) (or (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (forall ((v_ArrVal_315 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_ArrVal_315) |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset|) 0))) is different from false [2023-02-15 19:06:45,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:06:45,079 INFO L93 Difference]: Finished difference Result 130 states and 147 transitions. [2023-02-15 19:06:45,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-02-15 19:06:45,079 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-02-15 19:06:45,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:06:45,081 INFO L225 Difference]: With dead ends: 130 [2023-02-15 19:06:45,081 INFO L226 Difference]: Without dead ends: 128 [2023-02-15 19:06:45,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 23.1s TimeCoverageRelationStatistics Valid=357, Invalid=1166, Unknown=49, NotChecked=234, Total=1806 [2023-02-15 19:06:45,082 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 214 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 39 mSolverCounterUnsat, 23 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 23 IncrementalHoareTripleChecker+Unknown, 141 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-02-15 19:06:45,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 128 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 149 Invalid, 23 Unknown, 141 Unchecked, 6.2s Time] [2023-02-15 19:06:45,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2023-02-15 19:06:45,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 48. [2023-02-15 19:06:45,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.2340425531914894) internal successors, (58), 47 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 19:06:45,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2023-02-15 19:06:45,089 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 20 [2023-02-15 19:06:45,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:06:45,089 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2023-02-15 19:06:45,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:06:45,090 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2023-02-15 19:06:45,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-15 19:06:45,090 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:06:45,090 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:06:45,097 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 19:06:45,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:06:45,297 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:06:45,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:06:45,298 INFO L85 PathProgramCache]: Analyzing trace with hash 678263444, now seen corresponding path program 1 times [2023-02-15 19:06:45,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:06:45,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803592044] [2023-02-15 19:06:45,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:06:45,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:06:45,322 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 19:06:45,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2065284352] [2023-02-15 19:06:45,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:06:45,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:06:45,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:06:45,331 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 19:06:45,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-15 19:06:45,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:06:45,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 52 conjunts are in the unsatisfiable core [2023-02-15 19:06:45,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 19:06:45,741 INFO L321 Elim1Store]: treesize reduction 252, result has 37.8 percent of original size [2023-02-15 19:06:45,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 6 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 8 new quantified variables, introduced 19 case distinctions, treesize of input 462 treesize of output 894 [2023-02-15 19:06:45,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2023-02-15 19:06:45,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 33 [2023-02-15 19:06:45,864 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2023-02-15 19:06:45,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2023-02-15 19:06:46,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 19:06:47,294 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:06:47,294 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:06:47,297 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:06:47,298 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:06:47,298 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:06:47,300 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:06:47,301 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:06:47,302 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 200 [2023-02-15 19:06:47,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:06:47,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:06:47,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:06:47,363 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:06:47,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:06:47,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:06:47,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:06:47,372 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:06:47,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:06:47,424 INFO L321 Elim1Store]: treesize reduction 81, result has 17.3 percent of original size [2023-02-15 19:06:47,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 1281 treesize of output 1311 [2023-02-15 19:06:47,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 19:06:47,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 19:06:47,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 1434 treesize of output 1442 [2023-02-15 19:06:48,410 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:06:48,414 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:06:48,415 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 56 [2023-02-15 19:06:50,087 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:06:50,087 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:06:50,092 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:06:50,093 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:06:50,095 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 182 treesize of output 203 [2023-02-15 19:06:50,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 19:06:50,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 19:06:50,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:06:50,138 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:06:50,141 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:06:50,142 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 123 treesize of output 70 [2023-02-15 19:06:50,284 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:06:50,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:06:50,289 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:06:50,292 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 322 treesize of output 256 [2023-02-15 19:06:50,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:06:50,440 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:06:50,449 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 47 [2023-02-15 19:06:50,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 19:06:50,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 19:06:51,051 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-15 19:06:51,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2023-02-15 19:06:51,092 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse46 (= |c_ULTIMATE.start_main_~b~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse21 (= |c_ULTIMATE.start_main_~c~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse20 (not .cse21)) (.cse63 (not .cse46))) (and (let ((.cse13 (select |c_#memory_int| |c_ULTIMATE.start_main_~c~0#1.base|))) (let ((.cse50 (select .cse13 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse51 (select .cse13 |c_ULTIMATE.start_main_~c~0#1.offset|)) (.cse9 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse25 (= |c_ULTIMATE.start_main_~a~0#1.base| |c_ULTIMATE.start_main_~c~0#1.base|))) (let ((.cse22 (= |c_ULTIMATE.start_main_~a~0#1.base| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse0 (not .cse25)) (.cse3 (exists ((v_DerPreprocessor_38 Int)) (= v_DerPreprocessor_38 (select (store (store .cse9 |c_ULTIMATE.start_main_~b~0#1.offset| v_DerPreprocessor_38) |c_ULTIMATE.start_main_~c~0#1.offset| 0) |c_ULTIMATE.start_main_~b~0#1.offset|)))) (.cse5 (= (store (store .cse9 |c_ULTIMATE.start_main_~b~0#1.offset| .cse50) |c_ULTIMATE.start_main_~c~0#1.offset| .cse51) .cse13)) (.cse4 (= .cse51 0)) (.cse8 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse1 (= (select .cse9 |c_ULTIMATE.start_main_~c~0#1.offset|) 1))) (or (and (or (and .cse0 .cse1 (let ((.cse2 (exists ((v_prenex_61 (Array Int Int)) (v_DerPreprocessor_51 (Array Int Int)) (v_prenex_60 (Array Int Int)) (v_DerPreprocessor_63 (Array Int Int)) (v_DerPreprocessor_64 (Array Int Int)) (v_DerPreprocessor_50 (Array Int Int)) (v_DerPreprocessor_49 (Array Int Int))) (let ((.cse11 (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_prenex_61) |c_ULTIMATE.start_main_~b~0#1.base| v_prenex_60) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_51) |c_ULTIMATE.start_main_~a~0#1.base| v_prenex_61) |c_ULTIMATE.start_main_~b~0#1.base| v_prenex_60) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_51)) (.cse12 (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_63) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_64) |c_ULTIMATE.start_main_~c~0#1.base| .cse13) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_63) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_64) |c_ULTIMATE.start_main_~c~0#1.base| .cse13))) (let ((.cse6 (store (store (store (store (store (store .cse12 |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_49) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_50) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_51) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_49) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_50) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_51)) (.cse10 (select .cse12 |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse7 (select .cse11 |c_ULTIMATE.start_main_~a~0#1.base|))) (and (= (select .cse6 |c_ULTIMATE.start_main_~a~0#1.base|) .cse7) (= .cse8 .cse7) (= (select .cse6 |c_ULTIMATE.start_main_~b~0#1.base|) .cse9) (= (select v_DerPreprocessor_51 |c_ULTIMATE.start_main_~c~0#1.offset|) 0) (= (select .cse10 |c_ULTIMATE.start_main_~b~0#1.offset|) 1) (= (select .cse11 |c_ULTIMATE.start_main_~b~0#1.base|) .cse10) (= (select .cse12 |c_ULTIMATE.start_main_~a~0#1.base|) .cse7))))))) (or (and .cse2 .cse3 .cse4) (and .cse5 .cse2 .cse4)))) (and .cse1 (let ((.cse14 (exists ((v_prenex_58 (Array Int Int)) (v_DerPreprocessor_48 (Array Int Int)) (v_DerPreprocessor_66 (Array Int Int)) (v_DerPreprocessor_67 (Array Int Int)) (v_DerPreprocessor_46 (Array Int Int)) (v_prenex_59 (Array Int Int)) (v_DerPreprocessor_47 (Array Int Int))) (let ((.cse17 (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_66) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_67) |c_ULTIMATE.start_main_~c~0#1.base| .cse13) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_66) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_67) |c_ULTIMATE.start_main_~c~0#1.base| .cse13)) (.cse19 (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_prenex_59) |c_ULTIMATE.start_main_~b~0#1.base| v_prenex_58) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_48) |c_ULTIMATE.start_main_~a~0#1.base| v_prenex_59) |c_ULTIMATE.start_main_~b~0#1.base| v_prenex_58) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_48))) (let ((.cse16 (select .cse19 |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse15 (store (store (store (store (store (store .cse17 |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_46) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_47) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_48) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_46) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_47) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_48)) (.cse18 (select .cse17 |c_ULTIMATE.start_main_~b~0#1.base|))) (and (= (select .cse15 |c_ULTIMATE.start_main_~a~0#1.base|) .cse16) (= (select .cse16 |c_ULTIMATE.start_main_~c~0#1.offset|) 0) (= (select .cse17 |c_ULTIMATE.start_main_~a~0#1.base|) .cse16) (= (select v_DerPreprocessor_48 |c_ULTIMATE.start_main_~c~0#1.offset|) 0) (= .cse8 .cse16) (= (select .cse18 |c_ULTIMATE.start_main_~b~0#1.offset|) 1) (= (select .cse15 |c_ULTIMATE.start_main_~b~0#1.base|) .cse9) (= (select .cse19 |c_ULTIMATE.start_main_~b~0#1.base|) .cse18))))))) (or (and .cse14 .cse3 .cse4) (and .cse5 .cse14 .cse4))) .cse20) (and .cse1 .cse21 (or (exists ((v_DerPreprocessor_61 Int)) (= v_DerPreprocessor_61 (select (store (store .cse9 |c_ULTIMATE.start_main_~b~0#1.offset| v_DerPreprocessor_61) |c_ULTIMATE.start_main_~c~0#1.offset| 0) |c_ULTIMATE.start_main_~b~0#1.offset|))) .cse3) .cse4)) (not .cse22)) (and (or (and (exists ((v_DerPreprocessor_60 (Array Int Int)) (v_DerPreprocessor_59 (Array Int Int)) (v_DerPreprocessor_58 (Array Int Int))) (let ((.cse23 (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_58) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_59) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_60) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_58) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_59) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_60) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_58) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_59) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_60) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_58) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_59) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_60) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_58) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_59) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_60) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_58) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_59) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_60) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_58) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_59) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_60) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_58) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_59) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_60))) (let ((.cse24 (select .cse23 |c_ULTIMATE.start_main_~b~0#1.base|))) (and (= v_DerPreprocessor_58 (select .cse23 |c_ULTIMATE.start_main_~a~0#1.base|)) (= .cse24 .cse13) (= v_DerPreprocessor_59 .cse24))))) .cse21 .cse4) (and (or (and .cse25 (exists ((v_DerPreprocessor_52 (Array Int Int)) (v_DerPreprocessor_53 (Array Int Int)) (v_prenex_21 (Array Int Int)) (v_prenex_20 (Array Int Int)) (v_prenex_130 (Array Int Int)) (v_prenex_131 (Array Int Int)) (v_prenex_132 (Array Int Int)) (v_DerPreprocessor_55 (Array Int Int)) (v_DerPreprocessor_56 (Array Int Int)) (v_DerPreprocessor_57 (Array Int Int))) (let ((.cse29 (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_55) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_56) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_57) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_55) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_56) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_57))) (let ((.cse26 (store (store (store (store (store (store .cse29 |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_52) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_53) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_57) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_52) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_53) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_57))) (let ((.cse27 (store (store (store (store (store (store .cse26 |c_ULTIMATE.start_main_~a~0#1.base| v_prenex_130) |c_ULTIMATE.start_main_~b~0#1.base| v_prenex_131) |c_ULTIMATE.start_main_~c~0#1.base| v_prenex_132) |c_ULTIMATE.start_main_~a~0#1.base| v_prenex_130) |c_ULTIMATE.start_main_~b~0#1.base| v_prenex_131) |c_ULTIMATE.start_main_~c~0#1.base| v_prenex_132)) (.cse28 (store (store (store (store (store (store .cse29 |c_ULTIMATE.start_main_~a~0#1.base| v_prenex_21) |c_ULTIMATE.start_main_~b~0#1.base| v_prenex_20) |c_ULTIMATE.start_main_~c~0#1.base| v_prenex_132) |c_ULTIMATE.start_main_~a~0#1.base| v_prenex_21) |c_ULTIMATE.start_main_~b~0#1.base| v_prenex_20) |c_ULTIMATE.start_main_~c~0#1.base| v_prenex_132))) (and (= v_DerPreprocessor_52 (select .cse26 |c_ULTIMATE.start_main_~a~0#1.base|)) (= v_prenex_131 (select .cse27 |c_ULTIMATE.start_main_~b~0#1.base|)) (= v_prenex_21 (select .cse28 |c_ULTIMATE.start_main_~a~0#1.base|)) (= v_prenex_130 (select .cse27 |c_ULTIMATE.start_main_~a~0#1.base|)) (= (select v_prenex_132 |c_ULTIMATE.start_main_~c~0#1.offset|) 0) (= v_prenex_20 (select .cse28 |c_ULTIMATE.start_main_~b~0#1.base|)) (= (select v_DerPreprocessor_57 |c_ULTIMATE.start_main_~c~0#1.offset|) 0) (= v_DerPreprocessor_56 (select .cse29 |c_ULTIMATE.start_main_~b~0#1.base|)) (= v_DerPreprocessor_55 (select .cse29 |c_ULTIMATE.start_main_~a~0#1.base|)) (= v_DerPreprocessor_53 (select .cse26 |c_ULTIMATE.start_main_~b~0#1.base|))))))) (exists ((v_prenex_67 (Array Int Int)) (v_prenex_66 (Array Int Int))) (let ((.cse30 (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_prenex_66) |c_ULTIMATE.start_main_~b~0#1.base| v_prenex_67) |c_ULTIMATE.start_main_~c~0#1.base| .cse13) |c_ULTIMATE.start_main_~a~0#1.base| v_prenex_66) |c_ULTIMATE.start_main_~b~0#1.base| v_prenex_67) |c_ULTIMATE.start_main_~c~0#1.base| .cse13))) (and (= v_prenex_66 (select .cse30 |c_ULTIMATE.start_main_~a~0#1.base|)) (= v_prenex_67 (select .cse30 |c_ULTIMATE.start_main_~b~0#1.base|)))))) (and .cse22 (exists ((v_prenex_129 (Array Int Int)) (v_prenex_69 (Array Int Int)) (v_prenex_68 (Array Int Int)) (v_prenex_146 (Array Int Int)) (v_DerPreprocessor_55 (Array Int Int)) (v_prenex_147 (Array Int Int)) (v_DerPreprocessor_56 (Array Int Int)) (v_DerPreprocessor_57 (Array Int Int)) (v_prenex_127 (Array Int Int)) (v_prenex_128 (Array Int Int))) (let ((.cse34 (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_55) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_56) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_57) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_55) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_56) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_57))) (let ((.cse32 (store (store (store (store (store (store .cse34 |c_ULTIMATE.start_main_~a~0#1.base| v_prenex_146) |c_ULTIMATE.start_main_~b~0#1.base| v_prenex_147) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_57) |c_ULTIMATE.start_main_~a~0#1.base| v_prenex_146) |c_ULTIMATE.start_main_~b~0#1.base| v_prenex_147) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_57))) (let ((.cse31 (store (store (store (store (store (store .cse32 |c_ULTIMATE.start_main_~a~0#1.base| v_prenex_127) |c_ULTIMATE.start_main_~b~0#1.base| v_prenex_128) |c_ULTIMATE.start_main_~c~0#1.base| v_prenex_129) |c_ULTIMATE.start_main_~a~0#1.base| v_prenex_127) |c_ULTIMATE.start_main_~b~0#1.base| v_prenex_128) |c_ULTIMATE.start_main_~c~0#1.base| v_prenex_129)) (.cse33 (store (store (store (store (store (store .cse34 |c_ULTIMATE.start_main_~a~0#1.base| v_prenex_69) |c_ULTIMATE.start_main_~b~0#1.base| v_prenex_68) |c_ULTIMATE.start_main_~c~0#1.base| v_prenex_129) |c_ULTIMATE.start_main_~a~0#1.base| v_prenex_69) |c_ULTIMATE.start_main_~b~0#1.base| v_prenex_68) |c_ULTIMATE.start_main_~c~0#1.base| v_prenex_129))) (and (= v_prenex_128 (select .cse31 |c_ULTIMATE.start_main_~b~0#1.base|)) (= (select v_prenex_129 |c_ULTIMATE.start_main_~c~0#1.offset|) 0) (= v_prenex_147 (select .cse32 |c_ULTIMATE.start_main_~b~0#1.base|)) (= v_prenex_68 (select .cse33 |c_ULTIMATE.start_main_~b~0#1.base|)) (= (select v_DerPreprocessor_57 |c_ULTIMATE.start_main_~c~0#1.offset|) 0) (= v_prenex_127 (select .cse31 |c_ULTIMATE.start_main_~a~0#1.base|)) (= v_prenex_69 (select .cse33 |c_ULTIMATE.start_main_~a~0#1.base|)) (= v_DerPreprocessor_56 (select .cse34 |c_ULTIMATE.start_main_~b~0#1.base|)) (= v_prenex_146 (select .cse32 |c_ULTIMATE.start_main_~a~0#1.base|)) (= v_DerPreprocessor_55 (select .cse34 |c_ULTIMATE.start_main_~a~0#1.base|))))))) (exists ((v_prenex_65 (Array Int Int)) (v_prenex_64 (Array Int Int))) (let ((.cse35 (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_prenex_64) |c_ULTIMATE.start_main_~b~0#1.base| v_prenex_65) |c_ULTIMATE.start_main_~c~0#1.base| .cse13) |c_ULTIMATE.start_main_~a~0#1.base| v_prenex_64) |c_ULTIMATE.start_main_~b~0#1.base| v_prenex_65) |c_ULTIMATE.start_main_~c~0#1.base| .cse13))) (and (= v_prenex_64 (select .cse35 |c_ULTIMATE.start_main_~a~0#1.base|)) (= v_prenex_65 (select .cse35 |c_ULTIMATE.start_main_~b~0#1.base|)))))) (exists ((v_DerPreprocessor_57 (Array Int Int))) (and (exists ((v_DerPreprocessor_55 (Array Int Int)) (v_DerPreprocessor_56 (Array Int Int))) (let ((.cse45 (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_55) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_56) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_57) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_55) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_56) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_57))) (let ((.cse36 (select .cse45 |c_ULTIMATE.start_main_~a~0#1.base|))) (and (exists ((v_prenex_19 (Array Int Int)) (v_DerPreprocessor_32 (Array Int Int)) (v_prenex_144 (Array Int Int)) (v_prenex_133 (Array Int Int)) (v_prenex_145 (Array Int Int)) (v_prenex_134 (Array Int Int)) (v_prenex_135 (Array Int Int)) (v_prenex_18 (Array Int Int)) (v_DerPreprocessor_33 (Array Int Int))) (let ((.cse44 (store (store (store (store (store (store .cse45 |c_ULTIMATE.start_main_~a~0#1.base| v_prenex_144) |c_ULTIMATE.start_main_~b~0#1.base| v_prenex_145) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_57) |c_ULTIMATE.start_main_~a~0#1.base| v_prenex_144) |c_ULTIMATE.start_main_~b~0#1.base| v_prenex_145) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_57))) (let ((.cse42 (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_32) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_33) |c_ULTIMATE.start_main_~c~0#1.base| .cse13) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_32) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_33) |c_ULTIMATE.start_main_~c~0#1.base| .cse13)) (.cse43 (store (store (store (store (store (store .cse45 |c_ULTIMATE.start_main_~a~0#1.base| v_prenex_19) |c_ULTIMATE.start_main_~b~0#1.base| v_prenex_18) |c_ULTIMATE.start_main_~c~0#1.base| v_prenex_135) |c_ULTIMATE.start_main_~a~0#1.base| v_prenex_19) |c_ULTIMATE.start_main_~b~0#1.base| v_prenex_18) |c_ULTIMATE.start_main_~c~0#1.base| v_prenex_135)) (.cse41 (store (store (store (store (store (store .cse44 |c_ULTIMATE.start_main_~a~0#1.base| v_prenex_133) |c_ULTIMATE.start_main_~b~0#1.base| v_prenex_134) |c_ULTIMATE.start_main_~c~0#1.base| v_prenex_135) |c_ULTIMATE.start_main_~a~0#1.base| v_prenex_133) |c_ULTIMATE.start_main_~b~0#1.base| v_prenex_134) |c_ULTIMATE.start_main_~c~0#1.base| v_prenex_135))) (let ((.cse38 (select .cse41 |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse39 (select .cse43 |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse40 (select .cse44 |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse37 (select .cse42 |c_ULTIMATE.start_main_~a~0#1.base|))) (and (= .cse36 .cse37) (= .cse38 .cse37) (= v_DerPreprocessor_32 .cse37) (= v_prenex_133 .cse38) (= .cse39 .cse37) (= v_prenex_144 .cse40) (= v_prenex_134 (select .cse41 |c_ULTIMATE.start_main_~b~0#1.base|)) (= v_DerPreprocessor_33 (select .cse42 |c_ULTIMATE.start_main_~b~0#1.base|)) (= v_prenex_18 (select .cse43 |c_ULTIMATE.start_main_~b~0#1.base|)) (= (select v_prenex_135 |c_ULTIMATE.start_main_~c~0#1.offset|) 0) (= v_prenex_19 .cse39) (= .cse8 .cse37) (= .cse40 .cse37) (= v_prenex_145 (select .cse44 |c_ULTIMATE.start_main_~b~0#1.base|))))))) (= v_DerPreprocessor_56 (select .cse45 |c_ULTIMATE.start_main_~b~0#1.base|)) (= v_DerPreprocessor_55 .cse36))))) (= (select v_DerPreprocessor_57 |c_ULTIMATE.start_main_~c~0#1.offset|) 0)))) .cse4)) (= |c_ULTIMATE.start_main_~b~0#1.base| |c_ULTIMATE.start_main_~c~0#1.base|)) (and .cse0 (or (and .cse46 (= (select .cse9 |c_ULTIMATE.start_main_~b~0#1.offset|) 1) (or (and (exists ((v_prenex_180 (Array Int Int)) (v_DerPreprocessor_38 Int) (v_prenex_178 (Array Int Int)) (v_prenex_179 (Array Int Int))) (let ((.cse48 (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_prenex_178) |c_ULTIMATE.start_main_~b~0#1.base| v_prenex_179) |c_ULTIMATE.start_main_~c~0#1.base| v_prenex_180) |c_ULTIMATE.start_main_~a~0#1.base| v_prenex_178) |c_ULTIMATE.start_main_~b~0#1.base| v_prenex_179) |c_ULTIMATE.start_main_~c~0#1.base| v_prenex_180))) (let ((.cse47 (select .cse48 |c_ULTIMATE.start_main_~b~0#1.base|))) (and (= .cse47 .cse9) (= v_DerPreprocessor_38 (select (store (store .cse47 |c_ULTIMATE.start_main_~b~0#1.offset| v_DerPreprocessor_38) |c_ULTIMATE.start_main_~c~0#1.offset| 0) |c_ULTIMATE.start_main_~b~0#1.offset|)) (= (select v_prenex_180 |c_ULTIMATE.start_main_~c~0#1.offset|) 0) (= v_prenex_178 (select .cse48 |c_ULTIMATE.start_main_~a~0#1.base|)))))) .cse4) (and (exists ((v_prenex_180 (Array Int Int)) (v_prenex_178 (Array Int Int)) (v_prenex_179 (Array Int Int))) (let ((.cse52 (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_prenex_178) |c_ULTIMATE.start_main_~b~0#1.base| v_prenex_179) |c_ULTIMATE.start_main_~c~0#1.base| v_prenex_180) |c_ULTIMATE.start_main_~a~0#1.base| v_prenex_178) |c_ULTIMATE.start_main_~b~0#1.base| v_prenex_179) |c_ULTIMATE.start_main_~c~0#1.base| v_prenex_180))) (let ((.cse49 (select .cse52 |c_ULTIMATE.start_main_~b~0#1.base|))) (and (= .cse49 .cse9) (= (store (store .cse49 |c_ULTIMATE.start_main_~b~0#1.offset| .cse50) |c_ULTIMATE.start_main_~c~0#1.offset| .cse51) .cse13) (= (select v_prenex_180 |c_ULTIMATE.start_main_~c~0#1.offset|) 0) (= v_prenex_178 (select .cse52 |c_ULTIMATE.start_main_~a~0#1.base|)))))) .cse4) (and (exists ((v_DerPreprocessor_43 (Array Int Int)) (v_DerPreprocessor_44 (Array Int Int)) (v_DerPreprocessor_45 (Array Int Int))) (let ((.cse53 (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_43) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_44) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_45) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_43) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_44) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_45))) (let ((.cse54 (select .cse53 |c_ULTIMATE.start_main_~b~0#1.base|))) (and (= v_DerPreprocessor_43 (select .cse53 |c_ULTIMATE.start_main_~a~0#1.base|)) (= (store (store .cse54 |c_ULTIMATE.start_main_~b~0#1.offset| .cse50) |c_ULTIMATE.start_main_~c~0#1.offset| .cse51) .cse13) (= (select v_DerPreprocessor_45 |c_ULTIMATE.start_main_~c~0#1.offset|) 0) (= (select .cse54 |c_ULTIMATE.start_main_~c~0#1.offset|) 1))))) .cse4) (and (exists ((v_DerPreprocessor_43 (Array Int Int)) (v_DerPreprocessor_38 Int) (v_DerPreprocessor_44 (Array Int Int)) (v_DerPreprocessor_45 (Array Int Int))) (let ((.cse55 (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_43) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_44) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_45) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_43) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_44) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_45))) (let ((.cse56 (select .cse55 |c_ULTIMATE.start_main_~b~0#1.base|))) (and (= v_DerPreprocessor_43 (select .cse55 |c_ULTIMATE.start_main_~a~0#1.base|)) (= (select v_DerPreprocessor_45 |c_ULTIMATE.start_main_~c~0#1.offset|) 0) (= (select .cse56 |c_ULTIMATE.start_main_~c~0#1.offset|) 1) (= v_DerPreprocessor_38 (select (store (store .cse56 |c_ULTIMATE.start_main_~b~0#1.offset| v_DerPreprocessor_38) |c_ULTIMATE.start_main_~c~0#1.offset| 0) |c_ULTIMATE.start_main_~b~0#1.offset|)))))) .cse4))) (and (let ((.cse57 (exists ((v_DerPreprocessor_43 (Array Int Int)) (v_DerPreprocessor_70 (Array Int Int)) (v_prenex_23 (Array Int Int)) (v_prenex_22 (Array Int Int)) (v_DerPreprocessor_44 (Array Int Int)) (v_DerPreprocessor_45 (Array Int Int)) (v_DerPreprocessor_69 (Array Int Int))) (let ((.cse58 (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_69) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_70) |c_ULTIMATE.start_main_~c~0#1.base| .cse13) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_69) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_70) |c_ULTIMATE.start_main_~c~0#1.base| .cse13)) (.cse62 (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_prenex_22) |c_ULTIMATE.start_main_~b~0#1.base| v_prenex_23) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_45) |c_ULTIMATE.start_main_~a~0#1.base| v_prenex_22) |c_ULTIMATE.start_main_~b~0#1.base| v_prenex_23) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_45))) (let ((.cse59 (select .cse62 |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse60 (select .cse58 |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse61 (store (store (store (store (store (store .cse58 |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_43) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_44) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_45) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_43) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_44) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_45))) (and (= (select .cse58 |c_ULTIMATE.start_main_~a~0#1.base|) .cse59) (= (select .cse60 |c_ULTIMATE.start_main_~b~0#1.offset|) 1) (= (select .cse61 |c_ULTIMATE.start_main_~a~0#1.base|) .cse59) (= .cse8 .cse59) (= (select v_DerPreprocessor_45 |c_ULTIMATE.start_main_~c~0#1.offset|) 0) (= .cse9 .cse59) (= (select .cse62 |c_ULTIMATE.start_main_~b~0#1.base|) .cse60) (= (select .cse61 |c_ULTIMATE.start_main_~b~0#1.base|) .cse9))))))) (or (and .cse57 .cse3 .cse4) (and .cse57 .cse5 .cse4))) .cse1 .cse63))))))) (= 0 |c_ULTIMATE.start_main_~c~0#1.offset|) (not (= |c_ULTIMATE.start_main_~c~0#1.base| |c_ULTIMATE.start_main_~b~0#1.base|)) .cse20 .cse63 (= 0 |c_ULTIMATE.start_main_~b~0#1.offset|)))) is different from true [2023-02-15 19:06:51,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:06:51,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:06:51,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:06:51,197 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 379 treesize of output 312 [2023-02-15 19:06:51,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 19:06:51,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 19:06:51,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 19:06:51,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 19:06:51,224 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 19:06:51,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 19:06:51,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 19:06:51,236 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-15 19:06:51,242 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-15 19:06:51,248 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 19:06:51,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 19:06:51,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:06:51,332 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-15 19:06:51,332 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 1 case distinctions, treesize of input 28 treesize of output 30 [2023-02-15 19:06:51,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:06:51,366 INFO L321 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2023-02-15 19:06:51,366 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 38 treesize of output 39 [2023-02-15 19:06:51,535 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-15 19:06:51,536 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 32 [2023-02-15 19:06:51,545 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-02-15 19:06:51,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 19:06:51,786 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:06:51,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:06:51,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803592044] [2023-02-15 19:06:51,787 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 19:06:51,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065284352] [2023-02-15 19:06:51,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065284352] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 19:06:51,787 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 19:06:51,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 20 [2023-02-15 19:06:51,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607287318] [2023-02-15 19:06:51,788 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 19:06:51,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-15 19:06:51,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:06:51,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-15 19:06:51,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=273, Unknown=8, NotChecked=34, Total=380 [2023-02-15 19:06:51,789 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand has 20 states, 20 states have (on average 2.15) internal successors, (43), 20 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:06:53,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:06:53,211 INFO L93 Difference]: Finished difference Result 96 states and 109 transitions. [2023-02-15 19:06:53,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-02-15 19:06:53,211 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.15) internal successors, (43), 20 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-02-15 19:06:53,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:06:53,212 INFO L225 Difference]: With dead ends: 96 [2023-02-15 19:06:53,212 INFO L226 Difference]: Without dead ends: 94 [2023-02-15 19:06:53,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=338, Invalid=1297, Unknown=9, NotChecked=78, Total=1722 [2023-02-15 19:06:53,214 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 129 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 27 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 61 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 19:06:53,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 156 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 245 Invalid, 9 Unknown, 61 Unchecked, 0.3s Time] [2023-02-15 19:06:53,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-02-15 19:06:53,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 60. [2023-02-15 19:06:53,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.2372881355932204) internal successors, (73), 59 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:06:53,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 73 transitions. [2023-02-15 19:06:53,221 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 73 transitions. Word has length 24 [2023-02-15 19:06:53,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:06:53,222 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 73 transitions. [2023-02-15 19:06:53,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.15) internal successors, (43), 20 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:06:53,222 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 73 transitions. [2023-02-15 19:06:53,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-15 19:06:53,222 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:06:53,223 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:06:53,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-15 19:06:53,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:06:53,427 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:06:53,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:06:53,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1455292262, now seen corresponding path program 2 times [2023-02-15 19:06:53,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:06:53,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015374644] [2023-02-15 19:06:53,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:06:53,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:06:53,454 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 19:06:53,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1382325559] [2023-02-15 19:06:53,456 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 19:06:53,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:06:53,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:06:53,457 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 19:06:53,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-15 19:06:53,518 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 19:06:53,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 19:06:53,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-15 19:06:53,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 19:06:53,567 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 19:06:53,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 19:06:53,612 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 19:06:53,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:06:53,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015374644] [2023-02-15 19:06:53,612 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 19:06:53,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382325559] [2023-02-15 19:06:53,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382325559] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 19:06:53,612 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 19:06:53,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-02-15 19:06:53,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228969072] [2023-02-15 19:06:53,613 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 19:06:53,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-15 19:06:53,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:06:53,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-15 19:06:53,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-02-15 19:06:53,615 INFO L87 Difference]: Start difference. First operand 60 states and 73 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:06:53,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:06:53,827 INFO L93 Difference]: Finished difference Result 156 states and 180 transitions. [2023-02-15 19:06:53,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-15 19:06:53,827 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-02-15 19:06:53,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:06:53,828 INFO L225 Difference]: With dead ends: 156 [2023-02-15 19:06:53,828 INFO L226 Difference]: Without dead ends: 105 [2023-02-15 19:06:53,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=180, Invalid=420, Unknown=0, NotChecked=0, Total=600 [2023-02-15 19:06:53,829 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 199 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 19:06:53,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 63 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 19:06:53,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-02-15 19:06:53,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 63. [2023-02-15 19:06:53,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.1774193548387097) internal successors, (73), 62 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:06:53,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 73 transitions. [2023-02-15 19:06:53,843 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 73 transitions. Word has length 24 [2023-02-15 19:06:53,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:06:53,844 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 73 transitions. [2023-02-15 19:06:53,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:06:53,844 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 73 transitions. [2023-02-15 19:06:53,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-15 19:06:53,846 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:06:53,846 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:06:53,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-15 19:06:54,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-02-15 19:06:54,051 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:06:54,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:06:54,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1049923930, now seen corresponding path program 3 times [2023-02-15 19:06:54,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:06:54,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990154091] [2023-02-15 19:06:54,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:06:54,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:06:54,077 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 19:06:54,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1429989118] [2023-02-15 19:06:54,085 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 19:06:54,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:06:54,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:06:54,086 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 19:06:54,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-15 19:06:54,156 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-02-15 19:06:54,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 19:06:54,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-15 19:06:54,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 19:06:54,215 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 19:06:54,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 19:06:54,249 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 19:06:54,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:06:54,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990154091] [2023-02-15 19:06:54,249 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 19:06:54,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429989118] [2023-02-15 19:06:54,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429989118] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 19:06:54,249 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 19:06:54,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-02-15 19:06:54,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536805245] [2023-02-15 19:06:54,249 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 19:06:54,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-15 19:06:54,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:06:54,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-15 19:06:54,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-02-15 19:06:54,250 INFO L87 Difference]: Start difference. First operand 63 states and 73 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:06:54,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:06:54,353 INFO L93 Difference]: Finished difference Result 78 states and 87 transitions. [2023-02-15 19:06:54,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-15 19:06:54,353 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 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) Word has length 24 [2023-02-15 19:06:54,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:06:54,353 INFO L225 Difference]: With dead ends: 78 [2023-02-15 19:06:54,354 INFO L226 Difference]: Without dead ends: 58 [2023-02-15 19:06:54,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2023-02-15 19:06:54,354 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 65 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 19:06:54,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 34 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 19:06:54,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-02-15 19:06:54,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 45. [2023-02-15 19:06:54,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.1363636363636365) internal successors, (50), 44 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:06:54,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2023-02-15 19:06:54,358 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 24 [2023-02-15 19:06:54,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:06:54,359 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2023-02-15 19:06:54,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:06:54,359 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2023-02-15 19:06:54,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-15 19:06:54,359 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:06:54,359 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:06:54,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-15 19:06:54,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:06:54,569 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:06:54,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:06:54,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1304966232, now seen corresponding path program 4 times [2023-02-15 19:06:54,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:06:54,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847809195] [2023-02-15 19:06:54,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:06:54,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:06:54,581 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 19:06:54,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1506060164] [2023-02-15 19:06:54,581 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 19:06:54,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:06:54,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:06:54,582 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 19:06:54,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-15 19:06:54,663 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 19:06:54,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 19:06:54,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 38 conjunts are in the unsatisfiable core [2023-02-15 19:06:54,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 19:06:54,755 INFO L321 Elim1Store]: treesize reduction 117, result has 35.4 percent of original size [2023-02-15 19:06:54,755 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 194 treesize of output 281 [2023-02-15 19:06:54,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 19:06:54,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 19:06:54,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 19:06:55,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:06:55,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:06:55,111 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:06:55,113 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 62 treesize of output 63 [2023-02-15 19:06:55,117 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 19:06:55,168 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:06:55,178 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:06:55,188 INFO L321 Elim1Store]: treesize reduction 13, result has 38.1 percent of original size [2023-02-15 19:06:55,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 294 treesize of output 265 [2023-02-15 19:06:55,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 19:06:55,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 19:06:55,231 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-15 19:06:55,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 19:06:55,244 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2023-02-15 19:06:55,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:06:55,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:06:55,363 INFO L321 Elim1Store]: treesize reduction 10, result has 64.3 percent of original size [2023-02-15 19:06:55,364 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 170 treesize of output 177 [2023-02-15 19:06:55,371 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 118 treesize of output 116 [2023-02-15 19:06:55,376 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 116 treesize of output 114 [2023-02-15 19:06:55,380 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 114 treesize of output 112 [2023-02-15 19:06:55,386 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 112 treesize of output 110 [2023-02-15 19:06:55,422 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-15 19:06:55,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-15 19:06:55,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-15 19:06:55,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:06:55,519 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 23 treesize of output 22 [2023-02-15 19:06:55,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:06:55,549 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 23 treesize of output 22 [2023-02-15 19:06:55,590 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 1 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 19:06:55,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 19:06:55,828 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 19:06:55,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:06:55,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847809195] [2023-02-15 19:06:55,829 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 19:06:55,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506060164] [2023-02-15 19:06:55,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506060164] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 19:06:55,829 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 19:06:55,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2023-02-15 19:06:55,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109434911] [2023-02-15 19:06:55,829 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 19:06:55,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-15 19:06:55,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:06:55,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-15 19:06:55,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=220, Unknown=17, NotChecked=0, Total=306 [2023-02-15 19:06:55,831 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:06:56,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:06:56,144 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2023-02-15 19:06:56,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-15 19:06:56,144 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 18 states have internal predecessors, (47), 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 26 [2023-02-15 19:06:56,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:06:56,145 INFO L225 Difference]: With dead ends: 57 [2023-02-15 19:06:56,145 INFO L226 Difference]: Without dead ends: 55 [2023-02-15 19:06:56,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=176, Invalid=447, Unknown=27, NotChecked=0, Total=650 [2023-02-15 19:06:56,145 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 156 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 66 mSolverCounterUnsat, 34 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 34 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 19:06:56,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 60 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 108 Invalid, 34 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 19:06:56,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-02-15 19:06:56,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 47. [2023-02-15 19:06:56,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.1304347826086956) internal successors, (52), 46 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:06:56,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2023-02-15 19:06:56,150 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 26 [2023-02-15 19:06:56,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:06:56,150 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2023-02-15 19:06:56,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:06:56,151 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2023-02-15 19:06:56,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-15 19:06:56,151 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:06:56,151 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:06:56,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-15 19:06:56,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-02-15 19:06:56,363 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:06:56,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:06:56,364 INFO L85 PathProgramCache]: Analyzing trace with hash 341343694, now seen corresponding path program 2 times [2023-02-15 19:06:56,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:06:56,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594511661] [2023-02-15 19:06:56,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:06:56,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:06:56,390 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 19:06:56,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1865121319] [2023-02-15 19:06:56,390 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 19:06:56,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:06:56,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:06:56,406 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 19:06:56,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-15 19:06:56,496 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 19:06:56,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 19:06:56,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 59 conjunts are in the unsatisfiable core [2023-02-15 19:06:56,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 19:06:56,519 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-15 19:06:56,520 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2023-02-15 19:06:56,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:06:56,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:06:56,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:06:56,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 22 [2023-02-15 19:06:56,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 19:06:56,536 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 19:06:56,562 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-15 19:06:56,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 26 [2023-02-15 19:06:56,581 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-15 19:06:56,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 26 [2023-02-15 19:06:56,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:06:56,635 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-15 19:06:56,636 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 1 case distinctions, treesize of input 30 treesize of output 32 [2023-02-15 19:06:56,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:06:56,666 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-15 19:06:56,666 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 1 case distinctions, treesize of input 30 treesize of output 32 [2023-02-15 19:06:56,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:06:56,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:06:56,705 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:06:56,705 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:06:56,709 INFO L321 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2023-02-15 19:06:56,709 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 6 case distinctions, treesize of input 49 treesize of output 57 [2023-02-15 19:06:56,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:06:56,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:06:56,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:06:56,770 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-15 19:06:56,770 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 3 case distinctions, treesize of input 49 treesize of output 46 [2023-02-15 19:06:56,873 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-15 19:06:56,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 32 [2023-02-15 19:06:56,892 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 19:06:56,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 19:06:59,910 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 19:06:59,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:06:59,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594511661] [2023-02-15 19:06:59,910 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 19:06:59,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865121319] [2023-02-15 19:06:59,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865121319] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 19:06:59,910 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 19:06:59,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15] total 25 [2023-02-15 19:06:59,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279165802] [2023-02-15 19:06:59,910 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 19:06:59,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-02-15 19:06:59,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:06:59,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-02-15 19:06:59,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=501, Unknown=9, NotChecked=0, Total=600 [2023-02-15 19:06:59,911 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand has 25 states, 25 states have (on average 2.28) internal successors, (57), 25 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:07:00,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:07:00,367 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2023-02-15 19:07:00,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-15 19:07:00,368 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.28) internal successors, (57), 25 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-15 19:07:00,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:07:00,368 INFO L225 Difference]: With dead ends: 56 [2023-02-15 19:07:00,368 INFO L226 Difference]: Without dead ends: 54 [2023-02-15 19:07:00,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=252, Invalid=861, Unknown=9, NotChecked=0, Total=1122 [2023-02-15 19:07:00,369 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 163 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 19:07:00,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 77 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 19:07:00,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-02-15 19:07:00,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2023-02-15 19:07:00,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.12) internal successors, (56), 50 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:07:00,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2023-02-15 19:07:00,375 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 30 [2023-02-15 19:07:00,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:07:00,375 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2023-02-15 19:07:00,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.28) internal successors, (57), 25 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:07:00,375 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2023-02-15 19:07:00,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-02-15 19:07:00,376 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:07:00,376 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 19:07:00,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-02-15 19:07:00,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-02-15 19:07:00,583 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:07:00,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:07:00,583 INFO L85 PathProgramCache]: Analyzing trace with hash 505093188, now seen corresponding path program 3 times [2023-02-15 19:07:00,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:07:00,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922879174] [2023-02-15 19:07:00,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:07:00,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:07:00,600 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 19:07:00,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1088942771] [2023-02-15 19:07:00,600 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 19:07:00,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:07:00,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:07:00,601 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 19:07:00,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-15 19:07:00,735 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-02-15 19:07:00,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2023-02-15 19:07:00,735 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 19:07:00,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 19:07:00,776 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 19:07:00,777 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-02-15 19:07:00,778 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-15 19:07:00,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-02-15 19:07:00,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-02-15 19:07:00,988 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 1, 1, 1, 1, 1] [2023-02-15 19:07:00,991 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-15 19:07:01,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 07:07:01 BoogieIcfgContainer [2023-02-15 19:07:01,037 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-15 19:07:01,038 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-15 19:07:01,038 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-15 19:07:01,038 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-15 19:07:01,038 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 07:06:12" (3/4) ... [2023-02-15 19:07:01,039 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-02-15 19:07:01,078 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-15 19:07:01,078 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-15 19:07:01,078 INFO L158 Benchmark]: Toolchain (without parser) took 49482.35ms. Allocated memory was 140.5MB in the beginning and 234.9MB in the end (delta: 94.4MB). Free memory was 103.5MB in the beginning and 167.1MB in the end (delta: -63.6MB). Peak memory consumption was 33.1MB. Max. memory is 16.1GB. [2023-02-15 19:07:01,078 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 140.5MB. Free memory is still 111.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 19:07:01,079 INFO L158 Benchmark]: CACSL2BoogieTranslator took 147.45ms. Allocated memory is still 140.5MB. Free memory was 103.0MB in the beginning and 92.2MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-15 19:07:01,079 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.58ms. Allocated memory is still 140.5MB. Free memory was 92.2MB in the beginning and 90.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 19:07:01,080 INFO L158 Benchmark]: Boogie Preprocessor took 25.67ms. Allocated memory is still 140.5MB. Free memory was 90.4MB in the beginning and 89.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 19:07:01,080 INFO L158 Benchmark]: RCFGBuilder took 280.40ms. Allocated memory is still 140.5MB. Free memory was 89.2MB in the beginning and 76.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-02-15 19:07:01,081 INFO L158 Benchmark]: TraceAbstraction took 48962.84ms. Allocated memory was 140.5MB in the beginning and 234.9MB in the end (delta: 94.4MB). Free memory was 75.8MB in the beginning and 170.2MB in the end (delta: -94.4MB). Peak memory consumption was 1.7MB. Max. memory is 16.1GB. [2023-02-15 19:07:01,082 INFO L158 Benchmark]: Witness Printer took 40.25ms. Allocated memory is still 234.9MB. Free memory was 170.2MB in the beginning and 167.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-02-15 19:07:01,086 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 140.5MB. Free memory is still 111.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 147.45ms. Allocated memory is still 140.5MB. Free memory was 103.0MB in the beginning and 92.2MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.58ms. Allocated memory is still 140.5MB. Free memory was 92.2MB in the beginning and 90.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.67ms. Allocated memory is still 140.5MB. Free memory was 90.4MB in the beginning and 89.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 280.40ms. Allocated memory is still 140.5MB. Free memory was 89.2MB in the beginning and 76.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 48962.84ms. Allocated memory was 140.5MB in the beginning and 234.9MB in the end (delta: 94.4MB). Free memory was 75.8MB in the beginning and 170.2MB in the end (delta: -94.4MB). Peak memory consumption was 1.7MB. Max. memory is 16.1GB. * Witness Printer took 40.25ms. Allocated memory is still 234.9MB. Free memory was 170.2MB in the beginning and 167.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; VAL [N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, N=3] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long *a = malloc(sizeof(long long)*N); [L29] long long *b = malloc(sizeof(long long)*N); [L30] long long *c = malloc(sizeof(long long)*N); [L32] a[0] = 6 [L33] b[0] = 1 [L34] c[0] = 0 [L36] i=1 VAL [a={-2:0}, b={-1:0}, c={4:0}, i=1, N=3] [L36] COND TRUE i