./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 5fbdf5bf 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 ac6f32953cea7d4ed79f261aa32d63846572fa9f ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 10:32:14,610 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 10:32:14,613 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 10:32:14,653 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 10:32:14,653 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 10:32:14,657 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 10:32:14,658 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 10:32:14,663 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 10:32:14,665 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 10:32:14,668 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 10:32:14,678 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 10:32:14,681 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 10:32:14,682 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 10:32:14,684 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 10:32:14,686 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 10:32:14,689 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 10:32:14,689 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 10:32:14,690 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 10:32:14,692 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 10:32:14,698 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 10:32:14,699 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 10:32:14,700 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 10:32:14,702 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 10:32:14,703 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 10:32:14,708 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 10:32:14,709 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 10:32:14,709 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 10:32:14,710 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 10:32:14,711 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 10:32:14,711 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 10:32:14,712 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 10:32:14,712 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 10:32:14,714 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 10:32:14,715 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 10:32:14,716 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 10:32:14,716 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 10:32:14,717 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 10:32:14,717 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 10:32:14,717 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 10:32:14,719 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 10:32:14,719 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 10:32:14,723 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 10:32:14,753 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 10:32:14,754 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 10:32:14,755 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 10:32:14,755 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 10:32:14,757 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 10:32:14,757 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 10:32:14,757 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 10:32:14,757 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 10:32:14,758 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 10:32:14,758 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 10:32:14,759 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 10:32:14,759 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 10:32:14,759 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 10:32:14,759 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 10:32:14,760 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 10:32:14,760 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 10:32:14,760 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 10:32:14,760 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 10:32:14,760 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 10:32:14,761 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 10:32:14,761 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 10:32:14,761 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 10:32:14,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 10:32:14,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 10:32:14,762 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 10:32:14,762 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 10:32:14,762 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 10:32:14,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 10:32:14,763 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 10:32:14,763 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 10:32:14,763 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac6f32953cea7d4ed79f261aa32d63846572fa9f [2021-08-29 10:32:15,120 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 10:32:15,148 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 10:32:15,151 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 10:32:15,152 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 10:32:15,153 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 10:32:15,154 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/matrix-1.c [2021-08-29 10:32:15,209 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ba5601b6/04185aa5c09247fba00571ce3286272b/FLAGcb8d11beb [2021-08-29 10:32:15,613 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 10:32:15,614 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/matrix-1.c [2021-08-29 10:32:15,623 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ba5601b6/04185aa5c09247fba00571ce3286272b/FLAGcb8d11beb [2021-08-29 10:32:16,037 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ba5601b6/04185aa5c09247fba00571ce3286272b [2021-08-29 10:32:16,040 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 10:32:16,044 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 10:32:16,047 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 10:32:16,047 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 10:32:16,050 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 10:32:16,051 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:32:16" (1/1) ... [2021-08-29 10:32:16,052 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f9d983c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:32:16, skipping insertion in model container [2021-08-29 10:32:16,053 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:32:16" (1/1) ... [2021-08-29 10:32:16,059 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 10:32:16,072 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 10:32:16,176 WARN L228 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] [2021-08-29 10:32:16,190 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 10:32:16,196 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 10:32:16,207 WARN L228 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] [2021-08-29 10:32:16,223 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 10:32:16,243 INFO L208 MainTranslator]: Completed translation [2021-08-29 10:32:16,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:32:16 WrapperNode [2021-08-29 10:32:16,249 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 10:32:16,251 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 10:32:16,251 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 10:32:16,251 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 10:32:16,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:32:16" (1/1) ... [2021-08-29 10:32:16,309 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:32:16" (1/1) ... [2021-08-29 10:32:16,339 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 10:32:16,340 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 10:32:16,340 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 10:32:16,341 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 10:32:16,347 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:32:16" (1/1) ... [2021-08-29 10:32:16,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:32:16" (1/1) ... [2021-08-29 10:32:16,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:32:16" (1/1) ... [2021-08-29 10:32:16,355 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:32:16" (1/1) ... [2021-08-29 10:32:16,368 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:32:16" (1/1) ... [2021-08-29 10:32:16,375 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:32:16" (1/1) ... [2021-08-29 10:32:16,377 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:32:16" (1/1) ... [2021-08-29 10:32:16,382 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 10:32:16,385 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 10:32:16,385 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 10:32:16,385 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 10:32:16,386 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:32:16" (1/1) ... [2021-08-29 10:32:16,392 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 10:32:16,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 10:32:16,418 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) [2021-08-29 10:32:16,442 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 [2021-08-29 10:32:16,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 10:32:16,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 10:32:16,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-29 10:32:16,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 10:32:16,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 10:32:16,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-29 10:32:16,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-29 10:32:16,638 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 10:32:16,638 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-29 10:32:16,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:32:16 BoogieIcfgContainer [2021-08-29 10:32:16,640 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 10:32:16,641 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 10:32:16,642 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 10:32:16,644 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 10:32:16,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 10:32:16" (1/3) ... [2021-08-29 10:32:16,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19fb7499 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:32:16, skipping insertion in model container [2021-08-29 10:32:16,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:32:16" (2/3) ... [2021-08-29 10:32:16,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19fb7499 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:32:16, skipping insertion in model container [2021-08-29 10:32:16,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:32:16" (3/3) ... [2021-08-29 10:32:16,648 INFO L111 eAbstractionObserver]: Analyzing ICFG matrix-1.c [2021-08-29 10:32:16,654 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 10:32:16,655 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 10:32:16,694 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 10:32:16,700 INFO L339 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, mConcurrency=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-08-29 10:32:16,700 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-29 10:32:16,711 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) [2021-08-29 10:32:16,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-29 10:32:16,715 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 10:32:16,716 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-29 10:32:16,716 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 10:32:16,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 10:32:16,721 INFO L82 PathProgramCache]: Analyzing trace with hash 889621918, now seen corresponding path program 1 times [2021-08-29 10:32:16,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 10:32:16,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698370377] [2021-08-29 10:32:16,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 10:32:16,729 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 10:32:16,799 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 10:32:16,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1337220035] [2021-08-29 10:32:16,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 10:32:16,800 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 10:32:16,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 10:32:16,817 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) [2021-08-29 10:32:16,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-29 10:32:16,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 10:32:16,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-29 10:32:16,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 10:32:16,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 10:32:16,997 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 10:32:16,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 10:32:16,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698370377] [2021-08-29 10:32:16,997 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 10:32:16,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337220035] [2021-08-29 10:32:16,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337220035] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 10:32:16,998 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 10:32:16,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 10:32:17,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951807978] [2021-08-29 10:32:17,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 10:32:17,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 10:32:17,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 10:32:17,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 10:32:17,025 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) [2021-08-29 10:32:17,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 10:32:17,081 INFO L93 Difference]: Finished difference Result 33 states and 48 transitions. [2021-08-29 10:32:17,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 10:32:17,086 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 [2021-08-29 10:32:17,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 10:32:17,092 INFO L225 Difference]: With dead ends: 33 [2021-08-29 10:32:17,092 INFO L226 Difference]: Without dead ends: 16 [2021-08-29 10:32:17,095 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.06ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 10:32:17,098 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 6 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.62ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.12ms IncrementalHoareTripleChecker+Time [2021-08-29 10:32:17,099 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 0 Invalid, 33 Unknown, 0 Unchecked, 0.62ms Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 41.12ms Time] [2021-08-29 10:32:17,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-08-29 10:32:17,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 12. [2021-08-29 10:32:17,122 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) [2021-08-29 10:32:17,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2021-08-29 10:32:17,123 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 6 [2021-08-29 10:32:17,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 10:32:17,124 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2021-08-29 10:32:17,124 INFO L471 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) [2021-08-29 10:32:17,124 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2021-08-29 10:32:17,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-29 10:32:17,125 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 10:32:17,125 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 10:32:17,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-29 10:32:17,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-08-29 10:32:17,345 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 10:32:17,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 10:32:17,346 INFO L82 PathProgramCache]: Analyzing trace with hash -235638193, now seen corresponding path program 1 times [2021-08-29 10:32:17,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 10:32:17,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531660001] [2021-08-29 10:32:17,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 10:32:17,347 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 10:32:17,354 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 10:32:17,355 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [676406071] [2021-08-29 10:32:17,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 10:32:17,355 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 10:32:17,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 10:32:17,358 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) [2021-08-29 10:32:17,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-29 10:32:17,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 10:32:17,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-29 10:32:17,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 10:32:17,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 10:32:17,520 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 10:32:17,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 10:32:17,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531660001] [2021-08-29 10:32:17,520 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 10:32:17,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676406071] [2021-08-29 10:32:17,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676406071] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 10:32:17,521 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 10:32:17,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 10:32:17,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067277696] [2021-08-29 10:32:17,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 10:32:17,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 10:32:17,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 10:32:17,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 10:32:17,522 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) [2021-08-29 10:32:17,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 10:32:17,610 INFO L93 Difference]: Finished difference Result 28 states and 36 transitions. [2021-08-29 10:32:17,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 10:32:17,612 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 [2021-08-29 10:32:17,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 10:32:17,613 INFO L225 Difference]: With dead ends: 28 [2021-08-29 10:32:17,614 INFO L226 Difference]: Without dead ends: 19 [2021-08-29 10:32:17,614 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.15ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 10:32:17,616 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 12 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.71ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 68.41ms IncrementalHoareTripleChecker+Time [2021-08-29 10:32:17,617 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 0 Invalid, 39 Unknown, 0 Unchecked, 0.71ms Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 68.41ms Time] [2021-08-29 10:32:17,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-08-29 10:32:17,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 13. [2021-08-29 10:32:17,624 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) [2021-08-29 10:32:17,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2021-08-29 10:32:17,625 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 9 [2021-08-29 10:32:17,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 10:32:17,626 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-08-29 10:32:17,626 INFO L471 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) [2021-08-29 10:32:17,626 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2021-08-29 10:32:17,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-29 10:32:17,628 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 10:32:17,628 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 10:32:17,651 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-08-29 10:32:17,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-08-29 10:32:17,849 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 10:32:17,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 10:32:17,850 INFO L82 PathProgramCache]: Analyzing trace with hash -589728809, now seen corresponding path program 1 times [2021-08-29 10:32:17,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 10:32:17,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289015607] [2021-08-29 10:32:17,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 10:32:17,851 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 10:32:17,861 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 10:32:17,861 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [585840204] [2021-08-29 10:32:17,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 10:32:17,861 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 10:32:17,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 10:32:17,865 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) [2021-08-29 10:32:17,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-29 10:32:17,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 10:32:17,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 16 conjunts are in the unsatisfiable core [2021-08-29 10:32:17,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 10:32:18,168 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-08-29 10:32:18,183 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-08-29 10:32:18,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-08-29 10:32:18,312 INFO L388 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 33 treesize of output 25 [2021-08-29 10:32:18,344 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 10:32:18,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 10:32:19,084 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-29 10:32:19,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 8 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 8 new quantified variables, introduced 8 case distinctions, treesize of input 647 treesize of output 647 [2021-08-29 10:32:19,196 INFO L388 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 50 treesize of output 28 [2021-08-29 10:32:19,255 INFO L388 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 50 treesize of output 28 [2021-08-29 10:32:19,297 INFO L388 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 50 treesize of output 28 [2021-08-29 10:32:19,423 INFO L388 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 48 treesize of output 28 [2021-08-29 10:32:20,550 INFO L354 Elim1Store]: treesize reduction 6, result has 73.9 percent of original size [2021-08-29 10:32:20,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 484 treesize of output 459 [2021-08-29 10:32:21,616 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-29 10:32:21,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 455 treesize of output 335 [2021-08-29 10:32:21,820 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-08-29 10:32:21,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 446 treesize of output 281 [2021-08-29 10:32:21,848 INFO L354 Elim1Store]: treesize reduction 89, result has 4.3 percent of original size [2021-08-29 10:32:21,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 382 treesize of output 235 [2021-08-29 10:32:21,866 INFO L354 Elim1Store]: treesize reduction 25, result has 3.8 percent of original size [2021-08-29 10:32:21,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 337 treesize of output 179 [2021-08-29 10:32:22,516 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-29 10:32:22,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 280 treesize of output 154 [2021-08-29 10:32:31,068 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 10:32:31,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 10:32:31,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289015607] [2021-08-29 10:32:31,069 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 10:32:31,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585840204] [2021-08-29 10:32:31,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585840204] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 10:32:31,070 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 10:32:31,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 9 [2021-08-29 10:32:31,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687364934] [2021-08-29 10:32:31,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-29 10:32:31,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 10:32:31,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-29 10:32:31,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-08-29 10:32:31,073 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 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) [2021-08-29 10:32:49,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 10:32:49,273 INFO L93 Difference]: Finished difference Result 45 states and 60 transitions. [2021-08-29 10:32:49,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-29 10:32:49,274 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 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 12 [2021-08-29 10:32:49,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 10:32:49,275 INFO L225 Difference]: With dead ends: 45 [2021-08-29 10:32:49,275 INFO L226 Difference]: Without dead ends: 41 [2021-08-29 10:32:49,276 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 16956.78ms TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2021-08-29 10:32:49,277 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 61 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2769.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.25ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2795.72ms IncrementalHoareTripleChecker+Time [2021-08-29 10:32:49,278 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 0 Invalid, 138 Unknown, 0 Unchecked, 2.25ms Time], IncrementalHoareTripleChecker [33 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 2795.72ms Time] [2021-08-29 10:32:49,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-08-29 10:32:49,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 29. [2021-08-29 10:32:49,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 states have internal predecessors, (39), 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) [2021-08-29 10:32:49,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 39 transitions. [2021-08-29 10:32:49,285 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 39 transitions. Word has length 12 [2021-08-29 10:32:49,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 10:32:49,285 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 39 transitions. [2021-08-29 10:32:49,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 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) [2021-08-29 10:32:49,286 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2021-08-29 10:32:49,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-29 10:32:49,286 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 10:32:49,286 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 10:32:49,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-29 10:32:49,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 10:32:49,502 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 10:32:49,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 10:32:49,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1399075435, now seen corresponding path program 1 times [2021-08-29 10:32:49,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 10:32:49,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37018209] [2021-08-29 10:32:49,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 10:32:49,503 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 10:32:49,522 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 10:32:49,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1863048561] [2021-08-29 10:32:49,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 10:32:49,523 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 10:32:49,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 10:32:49,525 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) [2021-08-29 10:32:49,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-29 10:32:49,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 10:32:49,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 17 conjunts are in the unsatisfiable core [2021-08-29 10:32:49,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 10:32:49,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-29 10:32:49,702 INFO L388 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 33 treesize of output 25 [2021-08-29 10:32:49,719 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 10:32:49,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 10:32:49,914 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-29 10:32:49,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 8 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 8 new quantified variables, introduced 8 case distinctions, treesize of input 624 treesize of output 624 [2021-08-29 10:32:50,152 INFO L388 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 45 treesize of output 25 [2021-08-29 10:32:50,196 INFO L388 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 45 treesize of output 25 [2021-08-29 10:32:50,237 INFO L388 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 45 treesize of output 25 [2021-08-29 10:32:50,539 INFO L388 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 47 treesize of output 25 [2021-08-29 10:32:52,813 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-29 10:32:52,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 484 treesize of output 379 [2021-08-29 10:32:52,910 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-29 10:32:52,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 495 treesize of output 351 [2021-08-29 10:32:52,933 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-08-29 10:32:52,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 485 treesize of output 297 [2021-08-29 10:32:53,006 INFO L354 Elim1Store]: treesize reduction 89, result has 4.3 percent of original size [2021-08-29 10:32:53,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 419 treesize of output 251 [2021-08-29 10:32:53,021 INFO L354 Elim1Store]: treesize reduction 25, result has 3.8 percent of original size [2021-08-29 10:32:53,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 375 treesize of output 195 [2021-08-29 10:32:53,076 INFO L354 Elim1Store]: treesize reduction 6, result has 73.9 percent of original size [2021-08-29 10:32:53,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 305 treesize of output 166 [2021-08-29 10:32:59,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 10:32:59,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 10:32:59,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37018209] [2021-08-29 10:32:59,814 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 10:32:59,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863048561] [2021-08-29 10:32:59,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863048561] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 10:32:59,814 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 10:32:59,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-08-29 10:32:59,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279739037] [2021-08-29 10:32:59,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-29 10:32:59,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 10:32:59,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-29 10:32:59,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-08-29 10:32:59,816 INFO L87 Difference]: Start difference. First operand 29 states and 39 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 10:33:08,533 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 10:33:17,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 10:33:17,830 INFO L93 Difference]: Finished difference Result 56 states and 75 transitions. [2021-08-29 10:33:17,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-08-29 10:33:17,831 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-08-29 10:33:17,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 10:33:17,833 INFO L225 Difference]: With dead ends: 56 [2021-08-29 10:33:17,833 INFO L226 Difference]: Without dead ends: 52 [2021-08-29 10:33:17,833 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 16633.42ms TimeCoverageRelationStatistics Valid=171, Invalid=531, Unknown=0, NotChecked=0, Total=702 [2021-08-29 10:33:17,834 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 38 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3421.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.00ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3450.73ms IncrementalHoareTripleChecker+Time [2021-08-29 10:33:17,835 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 0 Invalid, 183 Unknown, 0 Unchecked, 2.00ms Time], IncrementalHoareTripleChecker [40 Valid, 142 Invalid, 1 Unknown, 0 Unchecked, 3450.73ms Time] [2021-08-29 10:33:17,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-08-29 10:33:17,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 24. [2021-08-29 10:33:17,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 23 states have internal predecessors, (31), 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) [2021-08-29 10:33:17,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2021-08-29 10:33:17,840 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 12 [2021-08-29 10:33:17,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 10:33:17,840 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2021-08-29 10:33:17,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 10:33:17,841 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2021-08-29 10:33:17,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-29 10:33:17,841 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 10:33:17,842 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-08-29 10:33:17,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-29 10:33:18,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 10:33:18,050 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 10:33:18,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 10:33:18,051 INFO L82 PathProgramCache]: Analyzing trace with hash 2019908015, now seen corresponding path program 2 times [2021-08-29 10:33:18,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 10:33:18,051 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284255772] [2021-08-29 10:33:18,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 10:33:18,052 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 10:33:18,076 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 10:33:18,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1720798558] [2021-08-29 10:33:18,076 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-29 10:33:18,076 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 10:33:18,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 10:33:18,097 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) [2021-08-29 10:33:18,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-29 10:33:18,150 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-29 10:33:18,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-29 10:33:18,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-29 10:33:18,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 10:33:18,205 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-08-29 10:33:18,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 10:33:18,272 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-08-29 10:33:18,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 10:33:18,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284255772] [2021-08-29 10:33:18,272 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 10:33:18,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720798558] [2021-08-29 10:33:18,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720798558] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 10:33:18,273 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 10:33:18,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-08-29 10:33:18,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736859259] [2021-08-29 10:33:18,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-29 10:33:18,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 10:33:18,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-29 10:33:18,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-29 10:33:18,274 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 10:33:18,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 10:33:18,298 INFO L93 Difference]: Finished difference Result 24 states and 31 transitions. [2021-08-29 10:33:18,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 10:33:18,300 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-08-29 10:33:18,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 10:33:18,300 INFO L225 Difference]: With dead ends: 24 [2021-08-29 10:33:18,300 INFO L226 Difference]: Without dead ends: 0 [2021-08-29 10:33:18,300 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.88ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-29 10:33:18,301 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.15ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.97ms IncrementalHoareTripleChecker+Time [2021-08-29 10:33:18,301 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 21 Unknown, 0 Unchecked, 0.15ms Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 21.97ms Time] [2021-08-29 10:33:18,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-29 10:33:18,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-29 10:33:18,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-08-29 10:33:18,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-29 10:33:18,302 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2021-08-29 10:33:18,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 10:33:18,302 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-29 10:33:18,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 10:33:18,303 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-29 10:33:18,303 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-29 10:33:18,305 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-08-29 10:33:18,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-29 10:33:18,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 10:33:18,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-29 10:33:18,511 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 10:33:18,525 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 10:33:18,525 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 10:33:18,533 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 10:33:18,591 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-29 10:33:18,591 INFO L858 garLoopResultBuilder]: For program point L21-2(lines 21 28) no Hoare annotation was computed. [2021-08-29 10:33:18,591 INFO L854 garLoopResultBuilder]: At program point L21-3(lines 21 28) the Hoare annotation is: (let ((.cse0 (= 1 ULTIMATE.start_main_~N_COL~0))) (or (and .cse0 (<= (select (select |#memory_int| |ULTIMATE.start_main_~#matriz~0.base|) |ULTIMATE.start_main_~#matriz~0.offset|) ULTIMATE.start_main_~maior~0) (= ULTIMATE.start_main_~j~0 1)) (and .cse0 (= ULTIMATE.start_main_~j~0 0) (= 1 ULTIMATE.start_main_~N_LIN~0)))) [2021-08-29 10:33:18,591 INFO L858 garLoopResultBuilder]: For program point L21-4(lines 21 28) no Hoare annotation was computed. [2021-08-29 10:33:18,591 INFO L858 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2021-08-29 10:33:18,592 INFO L861 garLoopResultBuilder]: At program point L32(lines 13 33) the Hoare annotation is: true [2021-08-29 10:33:18,592 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-29 10:33:18,592 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-29 10:33:18,592 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-29 10:33:18,592 INFO L858 garLoopResultBuilder]: For program point L26(lines 26 27) no Hoare annotation was computed. [2021-08-29 10:33:18,592 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2021-08-29 10:33:18,592 INFO L858 garLoopResultBuilder]: For program point L22-2(lines 22 28) no Hoare annotation was computed. [2021-08-29 10:33:18,593 INFO L854 garLoopResultBuilder]: At program point L22-3(lines 22 28) the Hoare annotation is: (let ((.cse0 (= 1 ULTIMATE.start_main_~N_COL~0)) (.cse1 (= ULTIMATE.start_main_~j~0 0)) (.cse2 (= 1 ULTIMATE.start_main_~N_LIN~0))) (or (and (= ULTIMATE.start_main_~k~0 0) .cse0 .cse1 .cse2) (and .cse0 .cse1 (<= (select (select |#memory_int| |ULTIMATE.start_main_~#matriz~0.base|) |ULTIMATE.start_main_~#matriz~0.offset|) ULTIMATE.start_main_~maior~0) .cse2))) [2021-08-29 10:33:18,593 INFO L858 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2021-08-29 10:33:18,593 INFO L861 garLoopResultBuilder]: At program point L6-2(lines 5 10) the Hoare annotation is: true [2021-08-29 10:33:18,597 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 10:33:18,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 10:33:18 BoogieIcfgContainer [2021-08-29 10:33:18,609 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 10:33:18,610 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 10:33:18,610 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 10:33:18,610 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 10:33:18,610 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:32:16" (3/4) ... [2021-08-29 10:33:18,613 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-29 10:33:18,620 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-08-29 10:33:18,621 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-29 10:33:18,621 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 10:33:18,621 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 10:33:18,646 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 10:33:18,646 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 10:33:18,647 INFO L158 Benchmark]: Toolchain (without parser) took 62602.98ms. Allocated memory was 56.6MB in the beginning and 104.9MB in the end (delta: 48.2MB). Free memory was 34.6MB in the beginning and 35.4MB in the end (delta: -818.3kB). Peak memory consumption was 48.3MB. Max. memory is 16.1GB. [2021-08-29 10:33:18,647 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 56.6MB. Free memory is still 38.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 10:33:18,647 INFO L158 Benchmark]: CACSL2BoogieTranslator took 202.56ms. Allocated memory is still 56.6MB. Free memory was 34.4MB in the beginning and 38.5MB in the end (delta: -4.1MB). Peak memory consumption was 9.1MB. Max. memory is 16.1GB. [2021-08-29 10:33:18,648 INFO L158 Benchmark]: Boogie Procedure Inliner took 88.66ms. Allocated memory was 56.6MB in the beginning and 71.3MB in the end (delta: 14.7MB). Free memory was 38.5MB in the beginning and 55.2MB in the end (delta: -16.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 10:33:18,648 INFO L158 Benchmark]: Boogie Preprocessor took 43.90ms. Allocated memory is still 71.3MB. Free memory was 55.2MB in the beginning and 54.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 10:33:18,648 INFO L158 Benchmark]: RCFGBuilder took 255.66ms. Allocated memory is still 71.3MB. Free memory was 54.1MB in the beginning and 45.0MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-29 10:33:18,649 INFO L158 Benchmark]: TraceAbstraction took 61967.67ms. Allocated memory was 71.3MB in the beginning and 104.9MB in the end (delta: 33.6MB). Free memory was 44.3MB in the beginning and 38.5MB in the end (delta: 5.8MB). Peak memory consumption was 41.0MB. Max. memory is 16.1GB. [2021-08-29 10:33:18,649 INFO L158 Benchmark]: Witness Printer took 36.90ms. Allocated memory is still 104.9MB. Free memory was 38.5MB in the beginning and 35.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-29 10:33:18,651 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 56.6MB. Free memory is still 38.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 202.56ms. Allocated memory is still 56.6MB. Free memory was 34.4MB in the beginning and 38.5MB in the end (delta: -4.1MB). Peak memory consumption was 9.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 88.66ms. Allocated memory was 56.6MB in the beginning and 71.3MB in the end (delta: 14.7MB). Free memory was 38.5MB in the beginning and 55.2MB in the end (delta: -16.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.90ms. Allocated memory is still 71.3MB. Free memory was 55.2MB in the beginning and 54.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 255.66ms. Allocated memory is still 71.3MB. Free memory was 54.1MB in the beginning and 45.0MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 61967.67ms. Allocated memory was 71.3MB in the beginning and 104.9MB in the end (delta: 33.6MB). Free memory was 44.3MB in the beginning and 38.5MB in the end (delta: 5.8MB). Peak memory consumption was 41.0MB. Max. memory is 16.1GB. * Witness Printer took 36.90ms. Allocated memory is still 104.9MB. Free memory was 38.5MB in the beginning and 35.4MB 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, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 7]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 61903.76ms, OverallIterations: 5, TraceHistogramMax: 3, EmptinessCheckTime: 10.30ms, AutomataDifference: 36448.73ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 84.02ms, InitialAbstractionConstructionTime: 7.63ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 118 SdHoareTripleChecker+Valid, 6377.95ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 118 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 6292.22ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 69 mSDsCounter, 75 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 338 IncrementalHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 75 mSolverCounterUnsat, 0 mSDtfsCounter, 338 mSolverCounterSat, 5.72ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 126 GetRequests, 72 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 33649.29ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=3, InterpolantAutomatonStates: 52, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 30.63ms AutomataMinimizationTime, 5 MinimizatonAttempts, 50 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.00ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 10 NumberOfFragments, 58 HoareAnnotationTreeSize, 4 FomulaSimplifications, 9 FormulaSimplificationTreeSizeReduction, 24.01ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 82 FormulaSimplificationTreeSizeReductionInter, 53.97ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 42.43ms SsaConstructionTime, 91.89ms SatisfiabilityAnalysisTime, 23715.41ms InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 97 ConstructedInterpolants, 0 QuantifiedInterpolants, 911 SizeOfPredicates, 37 NumberOfNonLiveVariables, 373 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 41/51 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: ((1 == N_COL && unknown-#memory_int-unknown[matriz][matriz] <= maior) && j == 1) || ((1 == N_COL && j == 0) && 1 == N_LIN) - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (((k == 0 && 1 == N_COL) && j == 0) && 1 == N_LIN) || (((1 == N_COL && j == 0) && unknown-#memory_int-unknown[matriz][matriz] <= maior) && 1 == N_LIN) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-08-29 10:33:18,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...