./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/matrix-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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/loops/matrix-1.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 484b00968af178bafd1c632864ac68eeb543ca8851deb47f0795724cfa80a660 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 15:07:59,359 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 15:07:59,360 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 15:07:59,390 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 15:07:59,390 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 15:07:59,391 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 15:07:59,394 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 15:07:59,398 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 15:07:59,400 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 15:07:59,404 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 15:07:59,404 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 15:07:59,406 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 15:07:59,406 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 15:07:59,408 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 15:07:59,409 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 15:07:59,411 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 15:07:59,420 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 15:07:59,420 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 15:07:59,421 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 15:07:59,422 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 15:07:59,423 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 15:07:59,423 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 15:07:59,424 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 15:07:59,424 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 15:07:59,425 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 15:07:59,426 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 15:07:59,426 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 15:07:59,427 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 15:07:59,427 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 15:07:59,427 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 15:07:59,428 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 15:07:59,428 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 15:07:59,429 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 15:07:59,429 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 15:07:59,429 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 15:07:59,430 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 15:07:59,430 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 15:07:59,431 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 15:07:59,431 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 15:07:59,431 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 15:07:59,432 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 15:07:59,432 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 15:07:59,433 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 15:07:59,445 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 15:07:59,446 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 15:07:59,446 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 15:07:59,446 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 15:07:59,447 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 15:07:59,447 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 15:07:59,447 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 15:07:59,447 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 15:07:59,448 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 15:07:59,448 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 15:07:59,448 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 15:07:59,448 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 15:07:59,448 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 15:07:59,448 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 15:07:59,449 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 15:07:59,449 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 15:07:59,449 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 15:07:59,449 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 15:07:59,449 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 15:07:59,449 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 15:07:59,449 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 15:07:59,450 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 15:07:59,450 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 15:07:59,450 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 15:07:59,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 15:07:59,450 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 15:07:59,451 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 15:07:59,451 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 15:07:59,451 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 15:07:59,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 15:07:59,451 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 15:07:59,451 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 15:07:59,452 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 15:07:59,452 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 484b00968af178bafd1c632864ac68eeb543ca8851deb47f0795724cfa80a660 [2022-07-22 15:07:59,680 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 15:07:59,703 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 15:07:59,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 15:07:59,706 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 15:07:59,706 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 15:07:59,707 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/matrix-1.c [2022-07-22 15:07:59,758 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5acfdcc78/e5d06749fd93435da13df5a312679dc4/FLAG55d346880 [2022-07-22 15:08:00,134 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 15:08:00,135 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/matrix-1.c [2022-07-22 15:08:00,140 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5acfdcc78/e5d06749fd93435da13df5a312679dc4/FLAG55d346880 [2022-07-22 15:08:00,151 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5acfdcc78/e5d06749fd93435da13df5a312679dc4 [2022-07-22 15:08:00,153 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 15:08:00,153 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 15:08:00,155 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 15:08:00,155 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 15:08:00,157 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 15:08:00,157 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 03:08:00" (1/1) ... [2022-07-22 15:08:00,158 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b2e773d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:08:00, skipping insertion in model container [2022-07-22 15:08:00,158 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 03:08:00" (1/1) ... [2022-07-22 15:08:00,163 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 15:08:00,172 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 15:08:00,262 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/matrix-1.c[320,333] [2022-07-22 15:08:00,282 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 15:08:00,291 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 15:08:00,299 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/matrix-1.c[320,333] [2022-07-22 15:08:00,304 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 15:08:00,313 INFO L208 MainTranslator]: Completed translation [2022-07-22 15:08:00,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:08:00 WrapperNode [2022-07-22 15:08:00,314 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 15:08:00,315 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 15:08:00,315 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 15:08:00,315 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 15:08:00,321 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:08:00" (1/1) ... [2022-07-22 15:08:00,325 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:08:00" (1/1) ... [2022-07-22 15:08:00,339 INFO L137 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 60 [2022-07-22 15:08:00,340 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 15:08:00,340 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 15:08:00,341 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 15:08:00,341 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 15:08:00,347 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:08:00" (1/1) ... [2022-07-22 15:08:00,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:08:00" (1/1) ... [2022-07-22 15:08:00,349 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:08:00" (1/1) ... [2022-07-22 15:08:00,349 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:08:00" (1/1) ... [2022-07-22 15:08:00,352 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:08:00" (1/1) ... [2022-07-22 15:08:00,354 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:08:00" (1/1) ... [2022-07-22 15:08:00,355 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:08:00" (1/1) ... [2022-07-22 15:08:00,357 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 15:08:00,357 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 15:08:00,358 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 15:08:00,358 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 15:08:00,363 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:08:00" (1/1) ... [2022-07-22 15:08:00,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 15:08:00,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 15:08:00,386 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) [2022-07-22 15:08:00,395 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 [2022-07-22 15:08:00,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 15:08:00,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 15:08:00,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 15:08:00,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 15:08:00,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 15:08:00,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 15:08:00,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 15:08:00,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 15:08:00,460 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 15:08:00,461 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 15:08:00,542 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 15:08:00,546 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 15:08:00,547 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-22 15:08:00,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 03:08:00 BoogieIcfgContainer [2022-07-22 15:08:00,548 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 15:08:00,549 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 15:08:00,549 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 15:08:00,552 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 15:08:00,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 03:08:00" (1/3) ... [2022-07-22 15:08:00,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66fafa87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 03:08:00, skipping insertion in model container [2022-07-22 15:08:00,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:08:00" (2/3) ... [2022-07-22 15:08:00,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66fafa87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 03:08:00, skipping insertion in model container [2022-07-22 15:08:00,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 03:08:00" (3/3) ... [2022-07-22 15:08:00,554 INFO L111 eAbstractionObserver]: Analyzing ICFG matrix-1.c [2022-07-22 15:08:00,563 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 15:08:00,564 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 15:08:00,594 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 15:08:00,599 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3d816046, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4c98bf83 [2022-07-22 15:08:00,599 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 15:08:00,602 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 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) [2022-07-22 15:08:00,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-22 15:08:00,606 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 15:08:00,606 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-22 15:08:00,607 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 15:08:00,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 15:08:00,610 INFO L85 PathProgramCache]: Analyzing trace with hash 889621918, now seen corresponding path program 1 times [2022-07-22 15:08:00,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 15:08:00,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184407850] [2022-07-22 15:08:00,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:08:00,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 15:08:00,715 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 15:08:00,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [52300990] [2022-07-22 15:08:00,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:08:00,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 15:08:00,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 15:08:00,718 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) [2022-07-22 15:08:00,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 15:08:00,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 15:08:00,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-22 15:08:00,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 15:08:00,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 15:08:00,811 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 15:08:00,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 15:08:00,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184407850] [2022-07-22 15:08:00,811 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 15:08:00,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52300990] [2022-07-22 15:08:00,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52300990] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 15:08:00,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 15:08:00,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 15:08:00,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366418914] [2022-07-22 15:08:00,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 15:08:00,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 15:08:00,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 15:08:00,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 15:08:00,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 15:08:00,863 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 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 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-07-22 15:08:00,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 15:08:00,913 INFO L93 Difference]: Finished difference Result 33 states and 48 transitions. [2022-07-22 15:08:00,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 15:08:00,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2022-07-22 15:08:00,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 15:08:00,926 INFO L225 Difference]: With dead ends: 33 [2022-07-22 15:08:00,926 INFO L226 Difference]: Without dead ends: 16 [2022-07-22 15:08:00,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 15:08:00,934 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 15:08:00,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 24 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 15:08:00,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-07-22 15:08:00,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 12. [2022-07-22 15:08:00,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 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) [2022-07-22 15:08:00,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2022-07-22 15:08:00,955 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 6 [2022-07-22 15:08:00,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 15:08:00,956 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2022-07-22 15:08:00,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-07-22 15:08:00,956 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2022-07-22 15:08:00,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-22 15:08:00,956 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 15:08:00,956 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 15:08:00,974 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 15:08:01,165 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 [2022-07-22 15:08:01,165 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 15:08:01,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 15:08:01,166 INFO L85 PathProgramCache]: Analyzing trace with hash -235638193, now seen corresponding path program 1 times [2022-07-22 15:08:01,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 15:08:01,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978731555] [2022-07-22 15:08:01,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:08:01,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 15:08:01,185 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 15:08:01,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1040819757] [2022-07-22 15:08:01,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:08:01,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 15:08:01,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 15:08:01,189 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) [2022-07-22 15:08:01,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 15:08:01,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 15:08:01,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-22 15:08:01,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 15:08:01,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 15:08:01,284 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 15:08:01,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 15:08:01,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978731555] [2022-07-22 15:08:01,284 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 15:08:01,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040819757] [2022-07-22 15:08:01,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040819757] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 15:08:01,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 15:08:01,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 15:08:01,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427971461] [2022-07-22 15:08:01,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 15:08:01,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 15:08:01,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 15:08:01,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 15:08:01,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 15:08:01,286 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-07-22 15:08:01,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 15:08:01,337 INFO L93 Difference]: Finished difference Result 28 states and 36 transitions. [2022-07-22 15:08:01,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 15:08:01,338 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2022-07-22 15:08:01,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 15:08:01,339 INFO L225 Difference]: With dead ends: 28 [2022-07-22 15:08:01,339 INFO L226 Difference]: Without dead ends: 19 [2022-07-22 15:08:01,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 15:08:01,340 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 12 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 15:08:01,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 19 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 15:08:01,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-07-22 15:08:01,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 13. [2022-07-22 15:08:01,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 15:08:01,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2022-07-22 15:08:01,343 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 9 [2022-07-22 15:08:01,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 15:08:01,344 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2022-07-22 15:08:01,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-07-22 15:08:01,344 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2022-07-22 15:08:01,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-22 15:08:01,344 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 15:08:01,345 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 15:08:01,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 15:08:01,562 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 [2022-07-22 15:08:01,563 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 15:08:01,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 15:08:01,563 INFO L85 PathProgramCache]: Analyzing trace with hash -589728809, now seen corresponding path program 1 times [2022-07-22 15:08:01,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 15:08:01,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504392115] [2022-07-22 15:08:01,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:08:01,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 15:08:01,576 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 15:08:01,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2035344108] [2022-07-22 15:08:01,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:08:01,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 15:08:01,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 15:08:01,600 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) [2022-07-22 15:08:01,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 15:08:01,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 15:08:01,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-22 15:08:01,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 15:08:01,874 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 309 treesize of output 292 [2022-07-22 15:08:01,886 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-07-22 15:08:01,893 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 22 [2022-07-22 15:08:01,973 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-22 15:08:02,001 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 15:08:02,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 15:08:02,686 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 310 treesize of output 294 [2022-07-22 15:08:02,694 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 15:08:02,697 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 15:08:02,698 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 15:08:02,700 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 15:08:02,702 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 15:08:02,710 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 15:08:02,720 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 15:08:02,722 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 15:08:02,723 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 15:08:02,724 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 15:08:02,724 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 15:08:02,728 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 15:08:03,105 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 15:08:03,105 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 8 stores, 0 select indices, 0 select index equivalence classes, 12 disjoint index pairs (out of 0 index pairs), introduced 8 new quantified variables, introduced 8 case distinctions, treesize of input 294 treesize of output 2671 [2022-07-22 15:08:29,624 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 15:08:29,624 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 15:08:29,634 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 15:08:29,641 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 15:08:29,652 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 15:08:29,661 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 15:08:29,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 15:08:37,146 WARN L233 SmtUtils]: Spent 7.45s on a formula simplification. DAG size of input: 88 DAG size of output: 57 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-07-22 15:08:37,147 INFO L356 Elim1Store]: treesize reduction 539, result has 46.2 percent of original size [2022-07-22 15:08:37,148 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 7 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 13 case distinctions, treesize of input 4233 treesize of output 7349