./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 20ed64ec 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 Using bit-precise analysis Retrying with bit-precise analysis 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_Bitvector.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-dev-20ed64e [2021-08-26 03:07:30,790 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 03:07:30,792 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 03:07:30,826 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 03:07:30,826 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 03:07:30,830 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 03:07:30,831 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 03:07:30,835 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 03:07:30,837 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 03:07:30,843 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 03:07:30,844 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 03:07:30,848 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 03:07:30,849 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 03:07:30,850 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 03:07:30,852 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 03:07:30,853 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 03:07:30,856 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 03:07:30,857 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 03:07:30,858 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 03:07:30,861 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 03:07:30,862 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 03:07:30,865 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 03:07:30,866 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 03:07:30,867 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 03:07:30,882 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 03:07:30,884 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 03:07:30,885 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 03:07:30,886 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 03:07:30,887 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 03:07:30,887 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 03:07:30,888 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 03:07:30,888 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 03:07:30,889 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 03:07:30,890 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 03:07:30,891 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 03:07:30,891 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 03:07:30,892 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 03:07:30,892 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 03:07:30,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 03:07:30,894 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 03:07:30,895 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 03:07:30,898 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 03:07:30,926 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 03:07:30,926 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 03:07:30,926 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 03:07:30,926 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 03:07:30,927 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 03:07:30,928 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 03:07:30,928 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 03:07:30,928 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 03:07:30,928 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 03:07:30,928 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 03:07:30,929 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 03:07:30,929 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 03:07:30,929 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 03:07:30,929 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 03:07:30,929 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 03:07:30,929 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 03:07:30,930 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 03:07:30,930 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 03:07:30,930 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 03:07:30,930 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 03:07:30,930 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 03:07:30,931 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 03:07:30,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 03:07:30,931 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 03:07:30,931 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 03:07:30,931 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 03:07:30,931 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 03:07:30,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 03:07:30,932 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 03:07:30,932 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 03:07:30,932 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac6f32953cea7d4ed79f261aa32d63846572fa9f [2021-08-26 03:07:31,208 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 03:07:31,238 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 03:07:31,240 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 03:07:31,241 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 03:07:31,241 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 03:07:31,242 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/matrix-1.c [2021-08-26 03:07:31,307 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d3d6b067/72c311aa2c0946c2b452d4f1d109f9ff/FLAGa103e9e39 [2021-08-26 03:07:31,668 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 03:07:31,669 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/matrix-1.c [2021-08-26 03:07:31,673 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d3d6b067/72c311aa2c0946c2b452d4f1d109f9ff/FLAGa103e9e39 [2021-08-26 03:07:32,060 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d3d6b067/72c311aa2c0946c2b452d4f1d109f9ff [2021-08-26 03:07:32,067 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 03:07:32,068 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 03:07:32,069 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 03:07:32,069 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 03:07:32,071 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 03:07:32,072 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:07:32" (1/1) ... [2021-08-26 03:07:32,072 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c7bbcce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:07:32, skipping insertion in model container [2021-08-26 03:07:32,073 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:07:32" (1/1) ... [2021-08-26 03:07:32,078 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 03:07:32,087 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 03:07:32,170 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] [2021-08-26 03:07:32,186 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 03:07:32,191 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 03:07:32,200 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] [2021-08-26 03:07:32,206 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 03:07:32,216 INFO L208 MainTranslator]: Completed translation [2021-08-26 03:07:32,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:07:32 WrapperNode [2021-08-26 03:07:32,217 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 03:07:32,217 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 03:07:32,218 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 03:07:32,218 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 03:07:32,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:07:32" (1/1) ... [2021-08-26 03:07:32,228 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:07:32" (1/1) ... [2021-08-26 03:07:32,244 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 03:07:32,245 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 03:07:32,245 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 03:07:32,245 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 03:07:32,251 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:07:32" (1/1) ... [2021-08-26 03:07:32,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:07:32" (1/1) ... [2021-08-26 03:07:32,253 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:07:32" (1/1) ... [2021-08-26 03:07:32,254 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:07:32" (1/1) ... [2021-08-26 03:07:32,257 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:07:32" (1/1) ... [2021-08-26 03:07:32,260 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:07:32" (1/1) ... [2021-08-26 03:07:32,261 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:07:32" (1/1) ... [2021-08-26 03:07:32,262 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 03:07:32,263 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 03:07:32,263 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 03:07:32,263 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 03:07:32,264 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:07:32" (1/1) ... [2021-08-26 03:07:32,269 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 03:07:32,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:07:32,287 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) [2021-08-26 03:07:32,289 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 [2021-08-26 03:07:32,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 03:07:32,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 03:07:32,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-26 03:07:32,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 03:07:32,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 03:07:32,332 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-26 03:07:32,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-26 03:07:32,581 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 03:07:32,581 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-26 03:07:32,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:07:32 BoogieIcfgContainer [2021-08-26 03:07:32,583 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 03:07:32,584 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 03:07:32,584 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 03:07:32,587 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 03:07:32,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 03:07:32" (1/3) ... [2021-08-26 03:07:32,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@328df411 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:07:32, skipping insertion in model container [2021-08-26 03:07:32,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:07:32" (2/3) ... [2021-08-26 03:07:32,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@328df411 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:07:32, skipping insertion in model container [2021-08-26 03:07:32,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:07:32" (3/3) ... [2021-08-26 03:07:32,589 INFO L111 eAbstractionObserver]: Analyzing ICFG matrix-1.c [2021-08-26 03:07:32,594 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 03:07:32,594 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-26 03:07:32,668 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 03:07:32,673 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 [2021-08-26 03:07:32,673 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-26 03:07:32,683 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) [2021-08-26 03:07:32,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-26 03:07:32,687 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:07:32,687 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-26 03:07:32,688 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:07:32,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:07:32,692 INFO L82 PathProgramCache]: Analyzing trace with hash 889621918, now seen corresponding path program 1 times [2021-08-26 03:07:32,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:07:32,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855766640] [2021-08-26 03:07:32,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:07:32,701 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:07:32,770 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 03:07:32,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1519369905] [2021-08-26 03:07:32,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:07:32,771 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:07:32,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:07:32,790 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) [2021-08-26 03:07:32,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-26 03:07:32,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:07:32,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-26 03:07:32,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:07:32,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:07:32,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:07:32,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855766640] [2021-08-26 03:07:32,958 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 03:07:32,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519369905] [2021-08-26 03:07:32,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519369905] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 03:07:32,960 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 03:07:32,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-26 03:07:32,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703944604] [2021-08-26 03:07:32,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 03:07:32,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:07:32,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 03:07:32,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 03:07:32,978 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) [2021-08-26 03:07:33,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:07:33,014 INFO L93 Difference]: Finished difference Result 33 states and 48 transitions. [2021-08-26 03:07:33,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 03:07:33,016 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 [2021-08-26 03:07:33,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:07:33,022 INFO L225 Difference]: With dead ends: 33 [2021-08-26 03:07:33,022 INFO L226 Difference]: Without dead ends: 16 [2021-08-26 03:07:33,026 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 03:07:33,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-08-26 03:07:33,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 12. [2021-08-26 03:07:33,049 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) [2021-08-26 03:07:33,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2021-08-26 03:07:33,051 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 6 [2021-08-26 03:07:33,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:07:33,051 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2021-08-26 03:07:33,052 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) [2021-08-26 03:07:33,052 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2021-08-26 03:07:33,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-26 03:07:33,052 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:07:33,052 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:07:33,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-26 03:07:33,276 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 [2021-08-26 03:07:33,276 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:07:33,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:07:33,277 INFO L82 PathProgramCache]: Analyzing trace with hash -235638193, now seen corresponding path program 1 times [2021-08-26 03:07:33,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:07:33,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792965690] [2021-08-26 03:07:33,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:07:33,289 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:07:33,301 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 03:07:33,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1458271520] [2021-08-26 03:07:33,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:07:33,303 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:07:33,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:07:33,304 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) [2021-08-26 03:07:33,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-26 03:07:33,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:07:33,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-26 03:07:33,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:07:33,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:07:33,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:07:33,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792965690] [2021-08-26 03:07:33,483 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 03:07:33,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458271520] [2021-08-26 03:07:33,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458271520] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 03:07:33,486 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 03:07:33,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 03:07:33,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586593792] [2021-08-26 03:07:33,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 03:07:33,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:07:33,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 03:07:33,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 03:07:33,498 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) [2021-08-26 03:07:33,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:07:33,555 INFO L93 Difference]: Finished difference Result 28 states and 36 transitions. [2021-08-26 03:07:33,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 03:07:33,555 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 [2021-08-26 03:07:33,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:07:33,556 INFO L225 Difference]: With dead ends: 28 [2021-08-26 03:07:33,556 INFO L226 Difference]: Without dead ends: 19 [2021-08-26 03:07:33,557 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 03:07:33,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-08-26 03:07:33,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 13. [2021-08-26 03:07:33,559 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) [2021-08-26 03:07:33,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2021-08-26 03:07:33,560 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 9 [2021-08-26 03:07:33,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:07:33,560 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-08-26 03:07:33,561 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) [2021-08-26 03:07:33,561 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2021-08-26 03:07:33,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-26 03:07:33,561 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:07:33,561 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:07:33,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-26 03:07:33,784 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 [2021-08-26 03:07:33,785 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:07:33,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:07:33,785 INFO L82 PathProgramCache]: Analyzing trace with hash -589728809, now seen corresponding path program 1 times [2021-08-26 03:07:33,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:07:33,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324978907] [2021-08-26 03:07:33,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:07:33,786 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:07:33,794 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 03:07:33,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1296888496] [2021-08-26 03:07:33,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:07:33,795 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:07:33,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:07:33,796 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) [2021-08-26 03:07:33,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-26 03:07:33,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:07:33,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 16 conjunts are in the unsatisfiable core [2021-08-26 03:07:33,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:07:34,077 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-08-26 03:07:34,090 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-08-26 03:07:34,101 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 [2021-08-26 03:07:34,196 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 33 treesize of output 25 [2021-08-26 03:07:34,221 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:07:34,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:07:34,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324978907] [2021-08-26 03:07:34,222 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 03:07:34,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296888496] [2021-08-26 03:07:34,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296888496] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:07:34,222 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 03:07:34,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-08-26 03:07:34,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550392693] [2021-08-26 03:07:34,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 03:07:34,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:07:34,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 03:07:34,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-26 03:07:34,224 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:07:34,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:07:34,323 INFO L93 Difference]: Finished difference Result 29 states and 36 transitions. [2021-08-26 03:07:34,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-26 03:07:34,324 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-08-26 03:07:34,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:07:34,326 INFO L225 Difference]: With dead ends: 29 [2021-08-26 03:07:34,326 INFO L226 Difference]: Without dead ends: 25 [2021-08-26 03:07:34,328 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 55.2ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-08-26 03:07:34,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-08-26 03:07:34,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 18. [2021-08-26 03:07:34,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 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) [2021-08-26 03:07:34,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2021-08-26 03:07:34,333 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 12 [2021-08-26 03:07:34,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:07:34,333 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2021-08-26 03:07:34,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:07:34,333 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2021-08-26 03:07:34,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-26 03:07:34,334 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:07:34,334 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:07:34,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-26 03:07:34,547 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 [2021-08-26 03:07:34,547 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:07:34,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:07:34,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1399075435, now seen corresponding path program 1 times [2021-08-26 03:07:34,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:07:34,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025866971] [2021-08-26 03:07:34,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:07:34,549 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:07:34,559 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 03:07:34,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [933415178] [2021-08-26 03:07:34,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:07:34,560 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:07:34,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:07:34,564 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) [2021-08-26 03:07:34,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-26 03:07:34,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:07:34,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 17 conjunts are in the unsatisfiable core [2021-08-26 03:07:34,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:07:34,763 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 [2021-08-26 03:07:34,823 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 [2021-08-26 03:07:34,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:07:34,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:07:34,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025866971] [2021-08-26 03:07:34,850 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 03:07:34,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933415178] [2021-08-26 03:07:34,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933415178] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:07:34,851 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 03:07:34,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-08-26 03:07:34,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457586502] [2021-08-26 03:07:34,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 03:07:34,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:07:34,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 03:07:34,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-26 03:07:34,852 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:07:35,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:07:35,000 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2021-08-26 03:07:35,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-26 03:07:35,000 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-08-26 03:07:35,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:07:35,001 INFO L225 Difference]: With dead ends: 35 [2021-08-26 03:07:35,001 INFO L226 Difference]: Without dead ends: 31 [2021-08-26 03:07:35,002 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 88.4ms TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-08-26 03:07:35,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-08-26 03:07:35,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 22. [2021-08-26 03:07:35,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.380952380952381) internal successors, (29), 21 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:07:35,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 29 transitions. [2021-08-26 03:07:35,005 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 29 transitions. Word has length 12 [2021-08-26 03:07:35,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:07:35,005 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 29 transitions. [2021-08-26 03:07:35,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:07:35,005 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 29 transitions. [2021-08-26 03:07:35,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-26 03:07:35,006 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:07:35,006 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:07:35,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-26 03:07:35,214 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 [2021-08-26 03:07:35,215 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:07:35,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:07:35,215 INFO L82 PathProgramCache]: Analyzing trace with hash -863591089, now seen corresponding path program 2 times [2021-08-26 03:07:35,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:07:35,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351248115] [2021-08-26 03:07:35,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:07:35,216 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:07:35,223 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 03:07:35,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1820576448] [2021-08-26 03:07:35,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 03:07:35,223 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:07:35,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:07:35,225 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) [2021-08-26 03:07:35,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-26 03:07:35,331 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 03:07:35,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 03:07:35,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-26 03:07:35,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:07:35,456 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:07:35,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:07:35,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351248115] [2021-08-26 03:07:35,457 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 03:07:35,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820576448] [2021-08-26 03:07:35,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820576448] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:07:35,457 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 03:07:35,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-08-26 03:07:35,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764799735] [2021-08-26 03:07:35,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 03:07:35,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:07:35,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 03:07:35,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 03:07:35,459 INFO L87 Difference]: Start difference. First operand 22 states and 29 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 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) [2021-08-26 03:07:35,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:07:35,489 INFO L93 Difference]: Finished difference Result 37 states and 49 transitions. [2021-08-26 03:07:35,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 03:07:35,490 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 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) Word has length 15 [2021-08-26 03:07:35,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:07:35,490 INFO L225 Difference]: With dead ends: 37 [2021-08-26 03:07:35,490 INFO L226 Difference]: Without dead ends: 20 [2021-08-26 03:07:35,490 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 03:07:35,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-08-26 03:07:35,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2021-08-26 03:07:35,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:07:35,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-08-26 03:07:35,493 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 15 [2021-08-26 03:07:35,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:07:35,493 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-08-26 03:07:35,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 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) [2021-08-26 03:07:35,494 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-08-26 03:07:35,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-26 03:07:35,494 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:07:35,494 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-08-26 03:07:35,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-26 03:07:35,694 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 [2021-08-26 03:07:35,695 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:07:35,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:07:35,695 INFO L82 PathProgramCache]: Analyzing trace with hash 2141915984, now seen corresponding path program 3 times [2021-08-26 03:07:35,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:07:35,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284462438] [2021-08-26 03:07:35,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:07:35,696 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:07:35,703 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 03:07:35,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1967040117] [2021-08-26 03:07:35,703 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 03:07:35,703 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:07:35,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:07:35,707 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 03:07:35,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-08-26 03:07:35,822 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-08-26 03:07:35,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 03:07:35,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 22 conjunts are in the unsatisfiable core [2021-08-26 03:07:35,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:07:36,001 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-08-26 03:07:36,022 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 [2021-08-26 03:07:36,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 03:07:36,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 03:07:36,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 03:07:36,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 03:07:36,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 03:07:36,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 03:07:36,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 03:07:36,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 03:07:36,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 03:07:36,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 03:07:36,415 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 03:07:36,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 03:07:36,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 03:07:36,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 03:07:36,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 03:07:36,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 03:07:36,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 03:07:36,542 INFO L354 Elim1Store]: treesize reduction 143, result has 49.6 percent of original size [2021-08-26 03:07:36,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 8 stores, 1 select indices, 1 select index equivalence classes, 16 disjoint index pairs (out of 0 index pairs), introduced 9 new quantified variables, introduced 5 case distinctions, treesize of input 327 treesize of output 475 [2021-08-26 03:07:36,634 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-26 03:07:36,635 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 73 treesize of output 73 [2021-08-26 03:07:36,751 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-26 03:07:36,752 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 55 treesize of output 55 [2021-08-26 03:07:36,831 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-08-26 03:07:36,964 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-08-26 03:07:37,014 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 43 treesize of output 23 [2021-08-26 03:07:37,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 03:07:37,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 31 [2021-08-26 03:07:37,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 03:07:37,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 177 treesize of output 131 [2021-08-26 03:07:37,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 03:07:37,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 159 treesize of output 113 [2021-08-26 03:07:37,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 03:07:37,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 188 treesize of output 138 [2021-08-26 03:07:37,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 03:07:37,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 159 treesize of output 113 [2021-08-26 03:07:37,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 03:07:37,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 148 treesize of output 106 [2021-08-26 03:07:38,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 03:07:38,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 148 treesize of output 106 [2021-08-26 03:07:38,522 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-26 03:07:38,523 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 713 treesize of output 693 [2021-08-26 03:07:38,851 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-26 03:07:38,851 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 615 treesize of output 595 [2021-08-26 03:07:39,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 03:07:39,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 225 treesize of output 194 [2021-08-26 03:07:39,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 03:07:39,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 49 [2021-08-26 03:07:39,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 03:07:39,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 224 treesize of output 197 [2021-08-26 03:07:39,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 03:07:39,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 491 treesize of output 436 [2021-08-26 03:07:39,462 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 43 treesize of output 23 [2021-08-26 03:07:39,476 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 [2021-08-26 03:07:39,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 03:07:39,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 34 [2021-08-26 03:07:39,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 03:07:39,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 33 [2021-08-26 03:07:39,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 03:07:39,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 51 [2021-08-26 03:07:42,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:07:42,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284462438] [2021-08-26 03:07:42,742 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 03:07:42,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967040117] [2021-08-26 03:07:42,742 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-26 03:07:42,745 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-08-26 03:07:42,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-08-26 03:07:42,746 ERROR L172 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2021-08-26 03:07:42,746 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-08-26 03:07:42,750 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 03:07:42,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-08-26 03:07:42,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:07:42,981 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 03:07:42,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 03:07:42 BoogieIcfgContainer [2021-08-26 03:07:42,990 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 03:07:42,991 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 03:07:42,991 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 03:07:42,991 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 03:07:42,991 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:07:32" (3/4) ... [2021-08-26 03:07:42,994 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-26 03:07:42,994 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 03:07:42,994 INFO L168 Benchmark]: Toolchain (without parser) took 10926.08 ms. Allocated memory was 67.1 MB in the beginning and 197.1 MB in the end (delta: 130.0 MB). Free memory was 48.1 MB in the beginning and 130.3 MB in the end (delta: -82.2 MB). Peak memory consumption was 49.0 MB. Max. memory is 16.1 GB. [2021-08-26 03:07:42,995 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 67.1 MB. Free memory was 48.5 MB in the beginning and 48.4 MB in the end (delta: 40.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 03:07:42,995 INFO L168 Benchmark]: CACSL2BoogieTranslator took 147.86 ms. Allocated memory is still 67.1 MB. Free memory was 47.9 MB in the beginning and 38.3 MB in the end (delta: 9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-26 03:07:42,995 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.95 ms. Allocated memory is still 67.1 MB. Free memory was 38.2 MB in the beginning and 36.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 03:07:42,995 INFO L168 Benchmark]: Boogie Preprocessor took 17.45 ms. Allocated memory is still 67.1 MB. Free memory was 36.6 MB in the beginning and 35.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 03:07:42,996 INFO L168 Benchmark]: RCFGBuilder took 320.06 ms. Allocated memory is still 67.1 MB. Free memory was 35.3 MB in the beginning and 38.0 MB in the end (delta: -2.7 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2021-08-26 03:07:42,996 INFO L168 Benchmark]: TraceAbstraction took 10405.90 ms. Allocated memory was 67.1 MB in the beginning and 197.1 MB in the end (delta: 130.0 MB). Free memory was 37.5 MB in the beginning and 131.4 MB in the end (delta: -93.8 MB). Peak memory consumption was 35.1 MB. Max. memory is 16.1 GB. [2021-08-26 03:07:42,996 INFO L168 Benchmark]: Witness Printer took 2.99 ms. Allocated memory is still 197.1 MB. Free memory was 131.4 MB in the beginning and 130.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 03:07:42,998 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 67.1 MB. Free memory was 48.5 MB in the beginning and 48.4 MB in the end (delta: 40.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 147.86 ms. Allocated memory is still 67.1 MB. Free memory was 47.9 MB in the beginning and 38.3 MB in the end (delta: 9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 26.95 ms. Allocated memory is still 67.1 MB. Free memory was 38.2 MB in the beginning and 36.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.45 ms. Allocated memory is still 67.1 MB. Free memory was 36.6 MB in the beginning and 35.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 320.06 ms. Allocated memory is still 67.1 MB. Free memory was 35.3 MB in the beginning and 38.0 MB in the end (delta: -2.7 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10405.90 ms. Allocated memory was 67.1 MB in the beginning and 197.1 MB in the end (delta: 130.0 MB). Free memory was 37.5 MB in the beginning and 131.4 MB in the end (delta: -93.8 MB). Peak memory consumption was 35.1 MB. Max. memory is 16.1 GB. * Witness Printer took 2.99 ms. Allocated memory is still 197.1 MB. Free memory was 131.4 MB in the beginning and 130.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 7]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L15] unsigned int N_LIN=1; [L16] unsigned int N_COL=1; [L17] unsigned int j,k; [L18] int matriz[N_COL][N_LIN], maior; [L20] maior = __VERIFIER_nondet_int() [L21] j=0 [L21] COND TRUE j=maior [L27] EXPR matriz[j][k] [L27] maior = matriz[j][k] [L22] k++ [L22] COND FALSE !(k=maior [L27] EXPR matriz[j][k] [L27] maior = matriz[j][k] [L22] k++ [L22] COND FALSE !(k 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 [2021-08-26 03:07:45,175 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 03:07:45,195 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 03:07:45,198 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 03:07:45,199 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 03:07:45,199 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 03:07:45,200 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/matrix-1.c [2021-08-26 03:07:45,255 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/619b13656/558dbaab95bf43308fb4de5833079b63/FLAGf88f3a740 [2021-08-26 03:07:45,707 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 03:07:45,708 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/matrix-1.c [2021-08-26 03:07:45,714 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/619b13656/558dbaab95bf43308fb4de5833079b63/FLAGf88f3a740 [2021-08-26 03:07:45,732 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/619b13656/558dbaab95bf43308fb4de5833079b63 [2021-08-26 03:07:45,737 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 03:07:45,738 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 03:07:45,740 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 03:07:45,740 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 03:07:45,743 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 03:07:45,743 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:07:45" (1/1) ... [2021-08-26 03:07:45,747 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@421fde7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:07:45, skipping insertion in model container [2021-08-26 03:07:45,748 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:07:45" (1/1) ... [2021-08-26 03:07:45,753 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 03:07:45,761 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 03:07:45,860 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] [2021-08-26 03:07:45,872 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 03:07:45,881 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 03:07:45,891 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] [2021-08-26 03:07:45,905 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 03:07:45,918 INFO L208 MainTranslator]: Completed translation [2021-08-26 03:07:45,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:07:45 WrapperNode [2021-08-26 03:07:45,919 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 03:07:45,920 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 03:07:45,920 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 03:07:45,920 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 03:07:45,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:07:45" (1/1) ... [2021-08-26 03:07:45,932 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:07:45" (1/1) ... [2021-08-26 03:07:45,951 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 03:07:45,952 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 03:07:45,952 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 03:07:45,952 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 03:07:45,958 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:07:45" (1/1) ... [2021-08-26 03:07:45,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:07:45" (1/1) ... [2021-08-26 03:07:45,968 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:07:45" (1/1) ... [2021-08-26 03:07:45,968 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:07:45" (1/1) ... [2021-08-26 03:07:45,980 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:07:45" (1/1) ... [2021-08-26 03:07:45,982 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:07:45" (1/1) ... [2021-08-26 03:07:45,983 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:07:45" (1/1) ... [2021-08-26 03:07:45,985 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 03:07:45,985 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 03:07:45,986 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 03:07:45,986 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 03:07:45,986 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:07:45" (1/1) ... [2021-08-26 03:07:45,993 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 03:07:45,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:07:46,009 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) [2021-08-26 03:07:46,032 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 [2021-08-26 03:07:46,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-26 03:07:46,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 03:07:46,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-08-26 03:07:46,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 03:07:46,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 03:07:46,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-26 03:07:46,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-08-26 03:07:46,378 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 03:07:46,378 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-26 03:07:46,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:07:46 BoogieIcfgContainer [2021-08-26 03:07:46,379 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 03:07:46,388 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 03:07:46,388 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 03:07:46,390 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 03:07:46,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 03:07:45" (1/3) ... [2021-08-26 03:07:46,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@599a9685 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:07:46, skipping insertion in model container [2021-08-26 03:07:46,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:07:45" (2/3) ... [2021-08-26 03:07:46,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@599a9685 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:07:46, skipping insertion in model container [2021-08-26 03:07:46,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:07:46" (3/3) ... [2021-08-26 03:07:46,392 INFO L111 eAbstractionObserver]: Analyzing ICFG matrix-1.c [2021-08-26 03:07:46,396 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 03:07:46,396 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-26 03:07:46,467 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 03:07:46,471 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 [2021-08-26 03:07:46,471 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-26 03:07:46,481 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) [2021-08-26 03:07:46,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-26 03:07:46,485 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:07:46,485 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-26 03:07:46,486 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:07:46,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:07:46,490 INFO L82 PathProgramCache]: Analyzing trace with hash 889621918, now seen corresponding path program 1 times [2021-08-26 03:07:46,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 03:07:46,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1943107946] [2021-08-26 03:07:46,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:07:46,507 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 03:07:46,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 03:07:46,525 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 03:07:46,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-26 03:07:46,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:07:46,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-26 03:07:46,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:07:46,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:07:46,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 03:07:46,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:07:46,806 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 03:07:46,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1943107946] [2021-08-26 03:07:46,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1943107946] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 03:07:46,806 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 03:07:46,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-08-26 03:07:46,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798352766] [2021-08-26 03:07:46,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 03:07:46,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 03:07:46,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 03:07:46,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-26 03:07:46,826 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 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-08-26 03:07:46,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:07:46,902 INFO L93 Difference]: Finished difference Result 33 states and 48 transitions. [2021-08-26 03:07:46,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 03:07:46,905 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 [2021-08-26 03:07:46,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:07:46,911 INFO L225 Difference]: With dead ends: 33 [2021-08-26 03:07:46,911 INFO L226 Difference]: Without dead ends: 16 [2021-08-26 03:07:46,913 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-26 03:07:46,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-08-26 03:07:46,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 12. [2021-08-26 03:07:46,935 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) [2021-08-26 03:07:46,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2021-08-26 03:07:46,937 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 6 [2021-08-26 03:07:46,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:07:46,938 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2021-08-26 03:07:46,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-08-26 03:07:46,938 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2021-08-26 03:07:46,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-26 03:07:46,939 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:07:46,939 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:07:46,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-08-26 03:07:47,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 03:07:47,148 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:07:47,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:07:47,149 INFO L82 PathProgramCache]: Analyzing trace with hash -235638193, now seen corresponding path program 1 times [2021-08-26 03:07:47,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 03:07:47,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1589851902] [2021-08-26 03:07:47,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:07:47,150 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 03:07:47,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 03:07:47,151 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 03:07:47,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-26 03:07:47,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:07:47,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-26 03:07:47,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:07:47,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:07:47,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 03:07:47,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:07:47,359 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 03:07:47,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1589851902] [2021-08-26 03:07:47,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1589851902] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 03:07:47,359 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 03:07:47,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-08-26 03:07:47,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791731574] [2021-08-26 03:07:47,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 03:07:47,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 03:07:47,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 03:07:47,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-08-26 03:07:47,362 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:07:47,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:07:47,402 INFO L93 Difference]: Finished difference Result 22 states and 27 transitions. [2021-08-26 03:07:47,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 03:07:47,404 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-08-26 03:07:47,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:07:47,405 INFO L225 Difference]: With dead ends: 22 [2021-08-26 03:07:47,405 INFO L226 Difference]: Without dead ends: 13 [2021-08-26 03:07:47,406 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 28.2ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-08-26 03:07:47,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-08-26 03:07:47,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-08-26 03:07:47,408 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) [2021-08-26 03:07:47,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2021-08-26 03:07:47,409 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 9 [2021-08-26 03:07:47,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:07:47,409 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-08-26 03:07:47,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:07:47,410 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2021-08-26 03:07:47,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-26 03:07:47,410 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:07:47,411 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:07:47,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-26 03:07:47,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 03:07:47,622 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:07:47,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:07:47,622 INFO L82 PathProgramCache]: Analyzing trace with hash -589728809, now seen corresponding path program 1 times [2021-08-26 03:07:47,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 03:07:47,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [552783475] [2021-08-26 03:07:47,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:07:47,623 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 03:07:47,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 03:07:47,624 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 03:07:47,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-26 03:07:47,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:07:47,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-26 03:07:47,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:07:47,980 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:07:47,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 03:07:48,145 INFO L354 Elim1Store]: treesize reduction 6, result has 64.7 percent of original size [2021-08-26 03:07:48,146 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 20 treesize of output 15 [2021-08-26 03:07:48,492 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:07:48,492 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 03:07:48,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [552783475] [2021-08-26 03:07:48,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [552783475] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-26 03:07:48,493 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 03:07:48,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-08-26 03:07:48,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208245831] [2021-08-26 03:07:48,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-26 03:07:48,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 03:07:48,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-26 03:07:48,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-08-26 03:07:48,495 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 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) [2021-08-26 03:07:48,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:07:48,767 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2021-08-26 03:07:48,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-26 03:07:48,769 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 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 [2021-08-26 03:07:48,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:07:48,769 INFO L225 Difference]: With dead ends: 27 [2021-08-26 03:07:48,769 INFO L226 Difference]: Without dead ends: 23 [2021-08-26 03:07:48,770 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 359.4ms TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-08-26 03:07:48,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-08-26 03:07:48,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2021-08-26 03:07:48,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:07:48,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2021-08-26 03:07:48,774 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 12 [2021-08-26 03:07:48,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:07:48,775 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2021-08-26 03:07:48,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 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) [2021-08-26 03:07:48,775 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2021-08-26 03:07:48,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-26 03:07:48,775 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:07:48,775 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:07:48,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-08-26 03:07:48,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 03:07:48,987 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:07:48,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:07:48,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1399075435, now seen corresponding path program 1 times [2021-08-26 03:07:48,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 03:07:48,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1236566230] [2021-08-26 03:07:48,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:07:48,989 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 03:07:48,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 03:07:48,990 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 03:07:48,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-08-26 03:07:49,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:07:49,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-26 03:07:49,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:07:49,250 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 21 [2021-08-26 03:07:49,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:07:49,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 03:07:49,520 INFO L354 Elim1Store]: treesize reduction 6, result has 64.7 percent of original size [2021-08-26 03:07:49,520 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 24 treesize of output 18 [2021-08-26 03:07:49,857 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:07:49,857 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 03:07:49,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1236566230] [2021-08-26 03:07:49,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1236566230] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-26 03:07:49,858 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 03:07:49,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-08-26 03:07:49,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807284035] [2021-08-26 03:07:49,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-26 03:07:49,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 03:07:49,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-26 03:07:49,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-08-26 03:07:49,860 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 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) [2021-08-26 03:07:50,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:07:50,331 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2021-08-26 03:07:50,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-26 03:07:50,331 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 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 [2021-08-26 03:07:50,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:07:50,333 INFO L225 Difference]: With dead ends: 29 [2021-08-26 03:07:50,333 INFO L226 Difference]: Without dead ends: 25 [2021-08-26 03:07:50,334 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 539.9ms TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2021-08-26 03:07:50,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-08-26 03:07:50,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 19. [2021-08-26 03:07:50,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:07:50,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2021-08-26 03:07:50,336 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 12 [2021-08-26 03:07:50,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:07:50,337 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2021-08-26 03:07:50,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 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) [2021-08-26 03:07:50,337 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2021-08-26 03:07:50,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-26 03:07:50,337 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:07:50,337 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-08-26 03:07:50,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-08-26 03:07:50,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 03:07:50,546 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:07:50,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:07:50,547 INFO L82 PathProgramCache]: Analyzing trace with hash 2141915984, now seen corresponding path program 2 times [2021-08-26 03:07:50,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 03:07:50,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1974579260] [2021-08-26 03:07:50,547 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 03:07:50,548 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 03:07:50,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 03:07:50,548 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 03:07:50,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-08-26 03:07:50,629 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 03:07:50,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 03:07:50,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-26 03:07:50,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:07:50,763 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-26 03:07:50,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 03:07:50,853 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-26 03:07:50,854 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 03:07:50,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1974579260] [2021-08-26 03:07:50,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1974579260] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-26 03:07:50,854 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 03:07:50,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-08-26 03:07:50,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316968759] [2021-08-26 03:07:50,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 03:07:50,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 03:07:50,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 03:07:50,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-26 03:07:50,856 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:07:50,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:07:50,890 INFO L93 Difference]: Finished difference Result 19 states and 23 transitions. [2021-08-26 03:07:50,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 03:07:50,891 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-08-26 03:07:50,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:07:50,891 INFO L225 Difference]: With dead ends: 19 [2021-08-26 03:07:50,891 INFO L226 Difference]: Without dead ends: 0 [2021-08-26 03:07:50,891 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.7ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-26 03:07:50,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-26 03:07:50,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-26 03:07:50,892 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) [2021-08-26 03:07:50,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-26 03:07:50,892 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2021-08-26 03:07:50,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:07:50,892 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-26 03:07:50,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:07:50,892 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-26 03:07:50,892 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-26 03:07:50,895 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 03:07:50,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-08-26 03:07:51,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 03:07:51,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-26 03:07:51,107 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:07:51,136 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:07:51,137 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:07:51,151 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:07:51,391 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-26 03:07:51,392 INFO L857 garLoopResultBuilder]: For program point L21-2(lines 21 28) no Hoare annotation was computed. [2021-08-26 03:07:51,393 INFO L853 garLoopResultBuilder]: At program point L21-3(lines 21 28) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_main_~N_LIN~0 (_ bv1 32))) (.cse0 (= ULTIMATE.start_main_~N_COL~0 (_ bv1 32))) (.cse3 (= |ULTIMATE.start_main_~#matriz~0.offset| (_ bv0 32)))) (or (and (= ULTIMATE.start_main_~j~0 (_ bv1 32)) .cse0 (let ((.cse2 (select (select |#memory_int| |ULTIMATE.start_main_~#matriz~0.base|) |ULTIMATE.start_main_~#matriz~0.offset|))) (or (and .cse1 (not (bvsge .cse2 ULTIMATE.start_main_~maior~0)) .cse3) (and .cse1 (= ULTIMATE.start_main_~maior~0 .cse2) .cse3)))) (and .cse1 .cse0 .cse3 (= ULTIMATE.start_main_~j~0 (_ bv0 32))))) [2021-08-26 03:07:51,393 INFO L857 garLoopResultBuilder]: For program point L21-4(lines 21 28) no Hoare annotation was computed. [2021-08-26 03:07:51,393 INFO L857 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2021-08-26 03:07:51,394 INFO L860 garLoopResultBuilder]: At program point L32(lines 13 33) the Hoare annotation is: true [2021-08-26 03:07:51,394 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-26 03:07:51,394 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-26 03:07:51,394 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-26 03:07:51,394 INFO L857 garLoopResultBuilder]: For program point L26(lines 26 27) no Hoare annotation was computed. [2021-08-26 03:07:51,394 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2021-08-26 03:07:51,394 INFO L857 garLoopResultBuilder]: For program point L22-2(lines 22 28) no Hoare annotation was computed. [2021-08-26 03:07:51,395 INFO L853 garLoopResultBuilder]: At program point L22-3(lines 22 28) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~N_LIN~0 (_ bv1 32))) (.cse4 (= ULTIMATE.start_main_~N_COL~0 (_ bv1 32))) (.cse2 (= |ULTIMATE.start_main_~#matriz~0.offset| (_ bv0 32))) (.cse3 (= ULTIMATE.start_main_~j~0 (_ bv0 32)))) (or (and (let ((.cse1 (select (select |#memory_int| |ULTIMATE.start_main_~#matriz~0.base|) |ULTIMATE.start_main_~#matriz~0.offset|))) (or (and .cse0 (not (bvsge .cse1 ULTIMATE.start_main_~maior~0)) .cse2 .cse3) (and .cse0 (= ULTIMATE.start_main_~maior~0 .cse1) .cse2 .cse3))) .cse4) (and (= ULTIMATE.start_main_~k~0 (_ bv0 32)) .cse0 .cse4 .cse2 .cse3))) [2021-08-26 03:07:51,395 INFO L857 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2021-08-26 03:07:51,395 INFO L860 garLoopResultBuilder]: At program point L6-2(lines 5 10) the Hoare annotation is: true [2021-08-26 03:07:51,398 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 03:07:51,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 03:07:51 BoogieIcfgContainer [2021-08-26 03:07:51,410 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 03:07:51,410 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 03:07:51,410 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 03:07:51,411 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 03:07:51,411 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:07:46" (3/4) ... [2021-08-26 03:07:51,413 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-26 03:07:51,420 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-08-26 03:07:51,421 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-26 03:07:51,421 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 03:07:51,421 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 03:07:51,447 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 03:07:51,448 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 03:07:51,448 INFO L168 Benchmark]: Toolchain (without parser) took 5710.23 ms. Allocated memory was 56.6 MB in the beginning and 100.7 MB in the end (delta: 44.0 MB). Free memory was 35.0 MB in the beginning and 66.8 MB in the end (delta: -31.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. [2021-08-26 03:07:51,449 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 56.6 MB. Free memory was 38.4 MB in the beginning and 38.3 MB in the end (delta: 29.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 03:07:51,449 INFO L168 Benchmark]: CACSL2BoogieTranslator took 179.36 ms. Allocated memory is still 56.6 MB. Free memory was 34.8 MB in the beginning and 24.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-26 03:07:51,450 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.43 ms. Allocated memory is still 56.6 MB. Free memory was 24.9 MB in the beginning and 23.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 03:07:51,450 INFO L168 Benchmark]: Boogie Preprocessor took 32.83 ms. Allocated memory is still 56.6 MB. Free memory was 23.3 MB in the beginning and 22.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 03:07:51,450 INFO L168 Benchmark]: RCFGBuilder took 394.02 ms. Allocated memory is still 56.6 MB. Free memory was 22.1 MB in the beginning and 27.1 MB in the end (delta: -5.1 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2021-08-26 03:07:51,451 INFO L168 Benchmark]: TraceAbstraction took 5021.85 ms. Allocated memory was 56.6 MB in the beginning and 100.7 MB in the end (delta: 44.0 MB). Free memory was 26.8 MB in the beginning and 69.8 MB in the end (delta: -43.0 MB). Peak memory consumption was 31.2 MB. Max. memory is 16.1 GB. [2021-08-26 03:07:51,451 INFO L168 Benchmark]: Witness Printer took 37.35 ms. Allocated memory is still 100.7 MB. Free memory was 69.8 MB in the beginning and 66.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-26 03:07:51,453 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 56.6 MB. Free memory was 38.4 MB in the beginning and 38.3 MB in the end (delta: 29.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 179.36 ms. Allocated memory is still 56.6 MB. Free memory was 34.8 MB in the beginning and 24.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.43 ms. Allocated memory is still 56.6 MB. Free memory was 24.9 MB in the beginning and 23.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.83 ms. Allocated memory is still 56.6 MB. Free memory was 23.3 MB in the beginning and 22.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 394.02 ms. Allocated memory is still 56.6 MB. Free memory was 22.1 MB in the beginning and 27.1 MB in the end (delta: -5.1 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5021.85 ms. Allocated memory was 56.6 MB in the beginning and 100.7 MB in the end (delta: 44.0 MB). Free memory was 26.8 MB in the beginning and 69.8 MB in the end (delta: -43.0 MB). Peak memory consumption was 31.2 MB. Max. memory is 16.1 GB. * Witness Printer took 37.35 ms. Allocated memory is still 100.7 MB. Free memory was 69.8 MB in the beginning and 66.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms 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: 4933.1ms, OverallIterations: 5, TraceHistogramMax: 2, EmptinessCheckTime: 8.7ms, AutomataDifference: 931.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 287.9ms, InitialAbstractionConstructionTime: 6.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 41 SDtfs, 57 SDslu, 103 SDs, 0 SdLazy, 218 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 517.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 113 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 984.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=3, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 24.5ms AutomataMinimizationTime, 5 MinimizatonAttempts, 12 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 10 NumberOfFragments, 110 HoareAnnotationTreeSize, 4 FomulaSimplifications, 36 FormulaSimplificationTreeSizeReduction, 45.9ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 14 FormulaSimplificationTreeSizeReductionInter, 237.1ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 45.9ms SsaConstructionTime, 164.0ms SatisfiabilityAnalysisTime, 2099.8ms InterpolantComputationTime, 57 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 104 ConstructedInterpolants, 1 QuantifiedInterpolants, 491 SizeOfPredicates, 28 NumberOfNonLiveVariables, 228 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 24/34 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: ((j == 1bv32 && N_COL == 1bv32) && (((N_LIN == 1bv32 && !~bvsge32(unknown-#memory_int-unknown[matriz][matriz], maior)) && matriz == 0bv32) || ((N_LIN == 1bv32 && maior == unknown-#memory_int-unknown[matriz][matriz]) && matriz == 0bv32))) || (((N_LIN == 1bv32 && N_COL == 1bv32) && matriz == 0bv32) && j == 0bv32) - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (((((N_LIN == 1bv32 && !~bvsge32(unknown-#memory_int-unknown[matriz][matriz], maior)) && matriz == 0bv32) && j == 0bv32) || (((N_LIN == 1bv32 && maior == unknown-#memory_int-unknown[matriz][matriz]) && matriz == 0bv32) && j == 0bv32)) && N_COL == 1bv32) || ((((k == 0bv32 && N_LIN == 1bv32) && N_COL == 1bv32) && matriz == 0bv32) && j == 0bv32) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-08-26 03:07:51,494 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...